A new study has found that, contrary to previous claims, the ocean is not a significant source of microplastics to the atmosphere, but rather a major sink.&nbsp;



The research team used a global chemical transport model to evaluate how tiny plastic particles, known as microplastics, move around the world. 



The finding challenges past assumptions about the ocean’s role in releasing plastic fragments into the air.



<h2 class="wp-block-heading" id="h-the-journey-of-airborne-microplastics-nbsp">The journey of airborne microplastics&nbsp;</h2>



Plastic debris in dust form is increasingly recognized as a worldwide contaminant. <a href="https://www.earth.com/news/microplastics-in-the-brain-alarming-new-details-revealed/" target="_blank" rel="noreferrer noopener">Microplastics</a> (particles less than 5 mm in diameter) have been detected in soils, freshwater, the ocean, and even in the air that we breathe.&nbsp;



Scientists warn that microscopic plastic bits pose risks for human health, since they can easily enter the respiratory system and the bloodstream.&nbsp;



Once airborne, these tiny pieces can travel large distances and eventually settle in remote or sensitive regions, harming wildlife and potentially impacting human populations.



But how do these particles enter the atmosphere in the first place? The planet’s primary sources of microplastics are typically found on land, from everyday materials such as vehicle tires shedding particles on roads, or synthetic clothing fibers washed out in domestic wastewater.&nbsp;



However, earlier models had suggested that there might be an additional large source at sea. Microplastics often accumulate in the <a href="https://www.earth.com/news/microplastics-pose-a-greater-threat-to-some-ocean-animals/" target="_blank" rel="noreferrer noopener">oceans</a>, carried there by rivers and other waterways. Then, once present in the marine environment, it was believed that they could be lofted into the air by sea spray or wind-driven wave action.



<h2 class="wp-block-heading" id="h-what-is-the-ocean-s-contribution">What is the ocean's contribution?</h2>



Prior reports pointing to a large marine source relied on an inverse modeling technique. That method uses atmospheric measurements of particular substances and attempts to infer their origin by matching observed concentrations with predicted distributions.&nbsp;



Applied to microplastics, inverse modeling suggested the ocean might contribute hundreds of millions - or even billions - of kilograms of these fragments to the air each year.



Such massive figures were then tested experimentally, with scientists using wave tanks and other controlled setups to see how vigorously wave action or bursting bubbles could transfer plastics from the water surface into the atmosphere.&nbsp;



Those studies, however, hinted that only tens or hundreds of thousands of kilograms of plastic might plausibly be introduced into the air - orders of magnitude smaller than the figures derived from inverse modeling.



<h2 class="wp-block-heading" id="h-a-global-chemical-transport-model">A global chemical transport model</h2>



In an effort to reconcile these contradictory outcomes, a group led by researchers at the <a href="https://mpimet.mpg.de/en/homepage" target="_blank" rel="noreferrer noopener">Max Planck Institute for Meteorology</a> (MPI-M) ran a global chemical transport model. This computer model simulates the movement of substances, such as microplastic particles, through the atmosphere.&nbsp;



By prescribing a minor oceanic emission of microplastics - consistent with the low estimates from laboratory work - they were able to predict how microplastic concentrations should appear in the air at various locations around the globe.



The results aligned well with real-world measurements. Based on the model, the ocean in fact took up some of these airborne particles instead of emitting them in large quantities.&nbsp;



The scientists learned that rather than being a source, the ocean appeared to be a sink, in which 15 percent of all airborne microplastics are deposited.&nbsp;



In other words, waves, spray, and wind may occasionally lift small amounts of plastic out of the sea, but far more of the material is settling onto the water rather than emanating from it.



<h2 class="wp-block-heading" id="h-how-airborne-microplastics-travel">How airborne microplastics travel</h2>



The study also uncovered the significant influence of particle size on how microplastics travel. Larger plastic fragments drop out of the atmosphere relatively quickly, often landing in coastal areas or not far from their point of emission.&nbsp;



By contrast, smaller particles can remain suspended for up to a year. That extended flight time allows them to cross entire oceans or continents and reach distant regions such as the <a href="https://www.earth.com/news/citizen-scientists-uncover-microplastics-in-the-remote-arctic/" target="_blank" rel="noreferrer noopener">Arctic</a>, where they land on ice or snow.



These discoveries highlight the global character of plastic contamination, showing that microplastic dust can be widespread in places typically considered pristine.&nbsp;



They also clarify that stopping microplastic pollution at its land-based sources may be the most efficient approach, as the ocean itself is neither the greatest emitter nor the root cause.



<h2 class="wp-block-heading" id="h-a-roadmap-for-pollution-reduction">A roadmap for pollution reduction</h2>



Given that airborne microplastics reach faraway corners of the planet, the research team’s results have immediate practical value. Any broad plan to cut plastic pollution should focus on terrestrial origins: tire wear on roads, textiles shedding fibers, and insufficiently treated wastewater.&nbsp;



Additionally, lessening single-use plastics and improving waste management at landfills can help limit microplastics before they disperse into the environment.



These findings show that ocean waters, already burdened by plastic accumulations, are predominantly sinks - taking in plastic particles from the air. They also emphasize that microplastics do not stay put in the environment: large ones settle nearby, while smaller ones can travel global distances.&nbsp;



Future models aimed at <a href="https://www.earth.com/news/plastic-pollution-is-changing-the-entire-earth-system/" target="_blank" rel="noreferrer noopener">plastic pollution</a> will need to consider these dynamics in more detail, particularly when mapping out strategies to protect vulnerable ecosystems, reduce human exposure, and maintain cleaner oceans.



By settling this debate over whether the ocean is more of a source or a sink, scientists can now direct their attention to mitigating the true origins of airborne microplastics, thus improving targeted policies to help address this pressing environmental concern.



The study is published in the journal <a href="https://dx.doi.org/10.1038/s41612-025-00914-3" target="_blank" rel="noreferrer noopener">npj Climate and Atmospheric Science</a>.



-----



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Airborne microplastics: Where they come from and where they go

A new study has found that, contrary to previous claims, the ocean is not a significant source of microplastics to the atmosphere, but rather a major sink.&nbsp; The research team used a global chemical transport model to evaluate how tiny plastic particles, known as microplastics, move around the world. The finding challenges past assumptions about the ocean’s role in releasing plastic fragments into the air. The journey of airborne microplastics&nbsp; Plastic debris in dust form is increasingly recognized as a worldwide contaminant. Microplastics (particles less than 5...

US House approves bill to delay new ozone pollution rule. Ignoring a White House veto threat, the Republican-controlled House on Wednesday approved a bill delaying an Obama administration rule setting stricter limits on ozone pollution linked to asthma and respiratory illness.
The bill, approved 234-177, would delay implementation of a new federal ozone standard by at least eight years. In the Senate, approval of the bill as a stand-alone measure is considered unlikely. Proponents said they may try to insert the ozone proposal into a broader energy bill stalled in the Senate.
The White House says the measure would block efforts to reduce smog, leading to more asthma attacks and premature deaths. The <a href="http://www.earth.com/news/environmental-era-of-pandemics/">Environmental</a> Protection Agency plans to implement the ozone rule over a 20-year period that gives the most-polluted states until 2037 to fully comply.
But Republicans said a series of interim deadlines set to begin this fall are difficult for states to meet. The bill, sponsored by Rep. Pete Olson of Texas, delays state action until 2024.
"States have worked hard over the last few decades to reduce ozone levels and improve air quality," Olson said. "My bill provides needed flexibility so that states and localities can adequately achieve new, lower standards with time for compliance."
The White House said in its veto threat that the bill would "undermine the vitally important environmental and health protections" of the Clean Air Act and significantly delay health benefits worth billions of dollars for millions of Americans, including vulnerable children, older adults and people with asthma.
The bill "would result in people living in areas with unhealthy ozone levels for at least an additional 10 years," the White House said.
The EPA said the new ozone standard of 70 parts per billion will reduce exposure to dangerous ozone pollution and prevent thousands of asthma attacks and emergency room visits and avert hundreds of premature deaths each year.
Business groups said a new ozone standard is unnecessary and could jeopardize jobs.
Rep. Kathy Castor, D-Fla., said the House bill would "gut" the Clean Air Act and "allow the polluters to override the scientists."
---
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US House approves bill to delay new ozone pollution rule

US House approves bill to delay new ozone pollution rule....

<div>

Tropical Storm Colin headed into history. The National Hurricane Center issued the last advisory on Tropical Storm Colin at 5 p.m. EDT (2100 UTC). At that time the center of Post-Tropical Cyclone Colin was located near 36.5 degrees north latitude and 72.2 degrees west longitude. That put the center of Colin about 205 miles (330 km) east-northeast of Cape Hatteras, <a href="http://www.earth.com/news/new-north-carolina-island-appears/">North Carolina.</a> The post-tropical cyclone was moving toward the northeast near 40 mph (65 kph) and that general motion is expected to continue through Wednesday night, June 8, 2016.

Maximum sustained winds were near 60 mph (95 kph) with higher gusts. Gradual weakening is expected to begin on Wednesday. The estimated minimum central pressure is 996 millibars. Tropical Storm Colin headed into history

On June 7, 2016 at 15:25 UTC (11:25 a.m. EDT) the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Terra satellite captured a visible light image of Tropical Storm Colin off the southeastern United States.

Colin was elongated and looked more like a frontal system on satellite imagery.

On June 8, 2016 at 8:05 a.m. EDT, the National Hurricane Center said that surface trough (elongated area of low pressure) extends from the remnants of Colin into the western <a href="https://www.bing.com/search?q=atlantc+ocean&amp;cvid=5e0099bd89ac4d48b26c04b9975ade8e&amp;FORM=ANAB01&amp;PC=HCTS">Atlantic</a> through 32 degrees north latitude to 70 degrees west longitude to across Florida near Cape Canaveral continuing into the Gulf of Mexico. Scattered to numerous showers/isolated thunderstorms are southeast of the surface trough to a line from Cuba near 21 degrees north latitude and 77 degrees west longitude to Bermuda.

Post-Tropical Storm Colin's remnants were speeding off to the northeast into the Atlantic and history.


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Tropical Storm Colin headed into history

Tropical Storm Colin headed into history. The National Hurricane Center...

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Global concern over chemical munitions dumped at sea. A special issue of the academic journal Deep-sea Research II, published recently, is devoted to expanding understanding of the global issue of chemical munitions dumped at sea. The publication was edited by Margo Edwards, interim director of the University of Hawai'i at Mānoa's (UHM) Hawai'i Institute of Geophysics and Planetology, and Jacek Beldowski, Science for Peace and Security MODUM ("Towards the Monitoring of Dumped Munitions Threat") project director at the Polish Academy of Sciences--two international leaders in the assessment of sea-dumped military munitions and chemical warfare; and the effects on the ocean environment and those who use it.

"The overarching objective of the special issue of Deep Sea Research II is to collate and compare results from two of the most comprehensive studies of sea dumped chemical munitions to promote data sharing and constrain the factors that influence where and how to mitigate the damage," said Edwards. Global concern over chemical munitions dumped at sea

Whereas today chemical warfare agents (CWA) are destroyed via chemical neutralization processes or high-temperature incineration, the internationally accepted practice in the early to middle 20th century was sea disposal of excess, obsolete or unserviceable munitions, including <a href="http://www.earth.com/news/it-pays-off-to-read-labels-and-avoid-products-with-harmful-chemicals/">chemical</a> warfare materiel.

In 1970, the U.S. Department of Defense discontinued this practice and in 1972 an international treaty, the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, was developed to protect the marine environment. By the time this treaty, referred to as the London Convention, was signed by a majority of nations, millions of tons of munitions were known to have been disposed throughout the world's oceans.

Since 2007, the Hawai'i Undersea Military Munitions Assessment (HUMMA) has been assessing sea-disposed military munitions in a region south of the island of Oahu, Hawai'i. Scientists at UHM and Environet and members of the U.S. Army collaborated to assess the condition of munitions casings; effects on seafloor ecosystems; and the presence of metals and CWA in sediments and shrimp.

The results of those studies, published in the current issue of Deep Sea Research II, document that the forty munitions examined in detail in the HUMMA field area pose little, if any, risk to human health while simultaneously recognizing that these forty are only a subset of the hundreds of likely chemical munitions in the area.

Illustrative of the mystery of the vast ocean, the HUMMA project enabled discovery of a new species of sea star, Brisingenes margoae nov. sp.--named in honor of Edwards. This unique species and other sea stars were collected using the School of Ocean and Earth Science and Technology's Hawai'i Undersea Research Laboratory submersibles.

The Chemical Munitions Search and Assessment (CHEMSEA) was conducted in the Baltic Sea from 2011 until 2014. In combination, the studies from CHEMSEA published in Deep Sea Research II recognize sea-dumped munitions as a point source of pollution in the Baltic Sea, although its contribution appears to be low and limited to deep, anoxic basins. Acute toxicity to humans from CWA (e.g., mustard, Adamsite) is unlikely given recorded concentrations, although adverse effects of chronic exposure on fish populations cannot be excluded.

The collected articles from the CHEMSEA and HUMMA projects projects in the special issue of Deep-sea Research II present a number of techniques that are useful for the complex in-depth investigation of munitions dumpsites. Results show that sea-dumped munitions in both project areas do not represent direct risk for humans except in cases of exposure due to recovery, although in the more confined Baltic Sea with limited water exchange, munitions can have adverse impact on the ecosystem.


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Global concern over chemical munitions dumped at sea

Global concern over chemical munitions dumped at sea. A special...

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Researchers calculate groundwater levels from satellite data. A new computer algorithm developed at Stanford University is enabling scientists to use satellite data to determine groundwater levels across larger areas than ever before.

The technique, detailed in the June issue of the journal Water Resources Research, could lead to better models of groundwater flow. "It could be especially useful in agricultural regions, where groundwater pumping is common and aquifer depletion is a concern," said study coauthor Rosemary Knight, a professor of geophysics in the Stanford School of <a href="http://www.earth.com/video/earth-from-space-houston-texas/">Earth</a>, Energy &amp; Environmental Sciences.

Knight and her colleagues recently applied the algorithm to determine groundwater levels across the entire agricultural basin of Colorado's San Luis Valley. As a starting point, the algorithm uses data acquired using a satellite technology called Interferometric Synthetic Aperture Radar, or InSAR, to calculate changing groundwater levels in the San Luis Valley between 1992 and 2000.

InSAR satellites use electromagnetic waves to monitor tiny, centimeter-scale changes in the elevation of Earth's surface. The program was initially developed in the 1980s by NASA to collect data on volcanoes, earthquakes and landslides, but Knight and her colleague Howard Zebker, a professor of geophysics and of electrical engineering at Stanford, have in recent years adapted the technology for groundwater monitoring.

The Stanford scientists, led by former postdoctoral scholar Jessica Reeves, had previously shown that changes in surface elevation could be correlated with fluctuations in groundwater levels. However, they were only able to do so for a relatively small area because they had to manually identify and analyze high-quality pixels in InSAR satellite images not covered by crops or other surface features that could obscure elevation measurements.

The new algorithm, developed by Jingyi "Ann" Chen, a Stanford postdoctoral researcher in Knight's group, automates this previously time-consuming pixel selection process. "What we've demonstrated in this new study is a methodology that allows us to find high-quality InSAR pixels in many more locations throughout the San Luis Valley," said Chen, who is first author of the new study.

Chen's algorithm also goes a step further by filling in, or interpolating, groundwater levels in the spaces between pixels where high-quality InSAR data are not available. Interpolation is a form of averaging, but it requires high-quality InSAR data from places that are located near monitoring wells where groundwater levels are already known in order to calibrate the link between the InSAR data and groundwater levels. In the previous work led by Reeves, only three monitoring wells were "co-located" with high-quality InSAR pixels. Using the new algorithm, that number increased to 16.

As a result, the team was able to calculate surface deformations -- and, by extension, groundwater levels -- for the entire agricultural basin of the <a href="https://en.wikipedia.org/wiki/San_Luis_Valley">San Luis Valley</a>, an area covering about 4,000 square meters -- or about five times greater than the area for which groundwater levels were calculated in the prior study. What's more, the team members were able to show how groundwater levels in the basin changed over time from 2007 to 2011 -- the years when InSAR data that could be analyzed by the algorithm were available.

"Jessica showed that there was useful information in the InSAR-derived deformation, and Ann has made the technique for extracting that information reliable and practical," Zebker said.

Having a continuous map of deformation in the San Luis Valley led to the team discovering that there is a delay between the time when groundwater is pumped out of an aquifer and when the ground sinks, or subsides, in response to the water removal. These time lags might be useful indicators of the geological properties of an aquifer, said Knight.

"In a sand aquifer, there is no time lag between when the water is pumped out and the ground surface deforms," Knight said. "However, if clay is present, it will take much longer to deform in response to pumping, so there will be a detectable time lag."

The next step, Zebker said, is to take the information about groundwater levels and aquifer characteristics extracted from InSAR satellites and incorporate it with data from other sources to develop improved models of groundwater flow.

"The goal is to take into account the full water budget," Zebker said. "This means accounting for water recharge such as rainfall and for discharge sources such as evaporation and runoff."


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Researchers calculate groundwater levels from satellite data

Researchers calculate groundwater levels from satellite data. A new computer...

Study: Colorado has 40 times more natural gas than previously believed. Western Colorado has 40 times more natural gas than previously thought, but an immediate boom is unlikely because of low gas prices, government and industry experts said Wednesday.
The U.S. Geological Survey said the Mancos Shale formation in Colorado's Piceance (PEE'-yahns) Basin holds about 66.3 trillion cubic feet of gas, up from 1.6 trillion estimated in 2003.
USGS cited data from commercial drilling companies and new research for the revision.
A trillion cubic feet of natural gas is enough to heat 15 million homes for a year, the U.S. Energy Department says.
David Ludlam, executive director of the West Slope Colorado Oil and Gas Association, said he doesn't expect a rush to drill in western Colorado because current natural gas prices are too low. If prices rise significantly, companies would likely begin drilling, he said.
The U.S. also needs more facilities to export natural gas to Pacific nations to help make the Colorado gas competitive, Ludlam said, citing the proposed Jordan Cove Liquid Natural Gas terminal at Coos Bay, Oregon. Study: Colorado has 40 times more natural gas than previously believed
The Piceance Basin, which spans much of western and northwestern Colorado, already has multiple well sites, pipelines and processing plants in place from a previous round of drilling in a shallower formation, Ludlam said.
Much of the basin is federal land managed by the Bureau of Land Management, and getting approval from the BLM to drill is often more difficult than getting private landowners to agree, said Kathleen Sgamma of the Western Energy Alliance, an industry group.
"I hope with this reassessment the government understands that indeed the Mancos Shale is an important formation that should be developed responsibly," she said.
Neither BLM nor USGS officials immediately returned calls Wednesday.
The new estimate could mean the Piceance Basin has the second-largest natural gas reserves in the country, after the Marcellus Shale formation in Pennsylvania and neighboring states, Ludlam said.
USGS says the Marcellus has 84 trillion cubic feet of gas.
More important than the volume of the reserves is the cost of extracting them, said Porter Bennett, an energy analyst and president of Ponderosa Advisors in Denver.
Bennett said the Piceance Basin has traditionally had high drilling costs, but Ludlam said the next wave of energy companies with leases in the area likely would have lower costs than previous operators.
Drilling companies will use hydraulic fracturing, or fracking, to recover the gas from the Mancos Shale, Ludlam said.
Fracking uses a mix of water, sand and chemicals under high pressure to force open underground formations and release oil and gas. Opponents say fracking poses a risk to public health and the environment but the industry says it is safe.
---
Follow Dan Elliott at <a href="http://twitter.com/DanElliottAP.">http://twitter.com/DanElliottAP.</a> His work can be found at<a href="http://bigstory.ap.org/content/dan-elliott.">http://bigstory.ap.org/content/dan-elliott.</a>
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Study: Colorado has 40 times more natural gas than previously believed

Study: Colorado has 40 times more natural gas than previously...

CORAL: The Coral Reef Airborne Laboratory. Coral reefs have almost always been studied up close, by scientists in the water looking at small portions of larger reefs to gather data and knowledge about the larger ecosystems. But NASA's Jet Propulsion Laboratory is taking a step back and getting a wider view, from about 23,000 feet above.
NASA and top scientists from around the world are launching a three-year campaign Thursday to gather new data on coral reefs like never before.
Using specially designed instruments mounted on high-flying aircraft, the scientists plan to map large swaths of coral around the world in hopes of better understanding how environmental changes are impacting these delicate and important ecosystems.
The researchers hope to discover how environmental forces including global warming, acidification and pollution impact coral reefs in different locations by creating detailed images of entire reef ecosystems.
<img class="alignleft size-thumbnail wp-image-2394613" src="http://cff1.greenatom.net/uploads/2016/06/09085521/CORAL-mission-graphic_1big_nasa-150x150.jpg" alt="CORAL-mission-graphic_1big_nasa" width="150" height="150" />"CORAL (Coral Reef Airborne Laboratory) is an airborne mission to survey reefs at select locations across the Pacific," Bermuda Institute of Ocean Sciences' Eric Hochberg, who is principal investigator for the project, told The Associated Press on Tuesday. "The idea is to get a new perspective on coral reefs from above, to study them at a larger scale than we have been able to before, and then relate reef condition to the environment." Hochberg and the project's lead NASA scientist Michelle Gierach were in Oahu's Kaneohe Bay with The Associated Press on Tuesday to gather baseline data in the water.
While the primary science will be conducted using instruments that map the sea floor from above, the team must also take baseline measurements in the ocean to validate the data they get from the air, Gierach said. Her main role in the project is to decipher the data gathered from the aircraft.
"PRISM, the instrument that we're using ... is the state-of-the-art instrument for addressing coastal and in-water science questions," Gierarch said. "CORAL wouldn't be possible without an instrument like PRISM, it's really the heart and soul of the project."
Coral reefs drive many tourist economies around the world, but they provide much more than pretty places to dive and snorkel, Gierach said. Reefs are critical habitat for the majority of the fish humans consume and also protect shorelines from dangerous storm surges and rising ocean levels.
Recently scientists have developed pharmaceutical applications from coral reefs, including pain killers that aren't habit forming, Hochberg said.
"Just realizing that though you may not see a coral, that you may not have your backyard be within this beautiful environment that we're in right now, corals are impacting you, they are globally important," Gierach said. "We have to understand how they're changing so we can make some managed decisions about their future."
Reefs are among the first ecosystems to be dramatically and directly impacted by global warming, according to the researchers.
The International Society for Reef Studies Consensus Statement, published in 2015, said that over the past few decades, up to 50 percent of coral reefs have been "largely or completely degraded by a combination of local factors and global climate change."
Julia Baum, assistant professor of biology at the University of Victoria in British Columbia, has done extensive research on coral reefs and told The Associated Press on Wednesday that the data gathered from this kind of project could prove highly valuable for international reef scientists and the conservation community.
"I'm a huge proponent of open source data," Baum said. "To me, the application of this technology to coral reefs holds great promise, but to fulfill that promise the data has to be made openly available to the scientific community." The CORAL researchers said all data will be publicly available and will take about six months to process once captured.
Baum acknowledged that a lot of coral reef science has been limited by the lack of broad data sets like this project plans to provide.
"As scientific divers we're limited by the depth we can work at and the amount of bottom time that we have while we're diving, so much of underwater marine science, especially on coral reefs is a painstakingly slow process," Baum said. "This Coral Reef Airborne Laboratory can't replace scientists in the water, but it can provide a very high-level, complementary type of data."
The CORAL team will study the reefs of Hawaii, Palau, the Mariana Islands, and Australia's Great Barrier Reef over the next three years.
---
Online:
<a href="http://airbornescience.jpl.nasa.gov/campaign/coral">http://airbornescience.jpl.nasa.gov/campaign/coral</a>
<a href="http://www.coral.bios.edu/">www.coral.bios.edu</a>
---
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CORAL: The Coral Reef Airborne Laboratory

CORAL: The Coral Reef Airborne Laboratory. Coral reefs have almost...

<div>

How El Niño impacts global temperatures. Scientists have found past El Niño oscillations in the Pacific Ocean may have amplified global climate fluctuations for hundreds of years at a time.

The team uncovered century-scale patterns in Pacific rainfall and temperature, and linked them with global climate changes in the past 2000 years.

For example, northern hemisphere warming and droughts between the years 950 and 1250 corresponded to an El Niño-like state in the <a href="https://www.earth.com/image/noumea-in-the-south-pacific-archipelago-of-new-caledonia/">Pacific,</a> which switched to a La Niña-like pattern during a cold period between 1350 and 1900.

The new data will help scientists build more accurate models of future climate, said member of the research team, Alena Kimbrough, from The Australian National University.

"Our work is a significant piece in the grand puzzle. The tropics are a complicated, yet incredibly important region to global climate and it's been great to untangle what's happening," said Ms Kimbrough, a PhD student at the ANU Research School of Earth Sciences.

"The current models struggle to reflect century-scale changes in the El Niño Southern Oscillation (ENSO).

"We've shown ENSO is an important part of the climate system that has influenced global temperatures and rainfall over the past millennium."

The team measured trace elements and stable isotopes in stalagmites from the Indonesian island of Flores to reconstruct ancient rainfall, and compared it with records from <a href="https://www.bing.com/search?q=east+asia&amp;cvid=f74a3c8f117746b89f515127eaf8aab8&amp;FORM=ANAB01&amp;PC=HCTS">East Asia</a> and the central-eastern equatorial Pacific.

The El Niño Southern Oscillation is an irregular variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. In one extreme it brings high temperatures and drought to eastern Australia and Indonesia, and the opposite extreme, known as La Niña, heavy rainfall and storms.

"In the past decade or so the rise in global temperature had a brief reprieve, the so-called warming hiatus, which can be partly attributed to a persistent La Niña pattern over that period," Ms Kimbrough said.

The new work found periods of predominantly El Niño-like patterns for several hundred years that alternate with La Niña patterns, impacting on global climate over the last 2000 years.

"Until we can model this lower-frequency behaviour in the tropical Pacific, one can only speculate on how the warming will play out over the next few decades," said lead author Dr Michael Griffiths from William Paterson University, in the United States.

The international team of scientists was led by Dr Michael Griffiths of William Patterson University in New Jersey, along with PhD candidate Alena Kimbrough and Dr Michael Gagan at the ANU, Professor Wahyoe Hantoro of the Indonesian Institute of Sciences and colleagues at the University of Melbourne and the University of Arizona.

The research is published in Nature Communications.


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How El Niño impacts global temperatures

How El Niño impacts global temperatures. Scientists have found past...

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NASA examined Tropical Storm Colin's heavy rainfall from space. Data from NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) were used to estimate rainfall from Tropical Storm Colin over a two day period before it dissipated.

Earlier in the week of June 6, 2016 the Governor of Florida declared a state of emergency as Tropical Storm Colin moved over the state. In just a few days heavy rainfall from the tropical storm spread from Florida's Gulf Coast through Georgia to the North Carolina coastline. Street flooding was common in Florida. Severe flooding was not reported but over 250 mm (10 inches) of rain was reported in some areas. Two tornadoes and a water spout reported in Florida on Monday June 6, 2016 were an example of the unstable weather accompanying the tropical storm. NASA examined Tropical Storm Colin's heavy rainfall from space

At NASA's Goddard Space Flight Center in Greenbelt, Maryland, NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) data were used to estimate Colin's rainfall. GPM is the Global Precipitation Measurement or GPM mission satellite. GPM is a joint mission between NASA and the Japanese space agency, JAXA.

[ooyala code="gwdm8xNDE6KGSF2O2ck4isZmNFgXeVLf" player_id="ce75157bc770441eaf5e849ae4d1d21f" width="900" height="500"]

The analysis showed rainfall totals beginning with the time when Colin formed in the Gulf of Mexico on June 6, 2016. The analysis ended on Wednesday June 8, 2016 after Colin transitioned to an extra-tropical cyclone and dissipated.

Some rainfall on the analysis was caused by a frontal system moving through the area and pushing Colin out to sea. This IMERG analysis indicated that Colin's heaviest precipitation occurred over central Florida. Extreme rainfall amounts of over 280 mm (11 inches) were measured during this period where Tropical Storm Colin formed in the Gulf of Mexico.

For Tropical Cyclone Colin's complete history on the NASA Hurricane page, visit: <a href="http://www.nasa.gov/feature/goddard/2016/colin" target="_blank" rel="noopener">http://www. nasa. gov/ feature/ goddard/ 2016/ colin</a>


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NASA examined Tropical Storm Colin's heavy rainfall from space

&nbsp; NASA examined Tropical Storm Colin's heavy rainfall from space....

Monstrous El Nino is over, now comes La Nina. This year's monstrous El Nino, nicknamed Godzilla by NASA, is dead. It heated up the globe, but didn't quite end California's four-year drought.
In its <a href="http://www.cpc.ncep.noaa.gov/products/analysis-monitoring/enso-advisory/ensodisc.pdf">monthly update</a> Thursday, the National Oceanic and Atmospheric Administration said the El Nino has ended, 15 months after its birth in March 2015. El Nino is a natural warming of parts of the central Pacific that changes weather worldwide.
"There's nothing left," NOAA Climate Prediction Center deputy director Mike Halpert said. "Stick a fork in it, it's done." Monstrous El Nino is over, now comes La Nina
Halpert said this El Nino triggered droughts in parts of Africa and India and played a role in a record hurricane season in the Pacific. It also added to man-made warming, as Earth has had 12 straight record hot months and is likely to have its second straight record hot year.
Halpert said this will go down as one of the three strongest El Ninos on record, along with 1997-1998 and 1982-83.
In parts of the central Pacific, ocean temperatures were even hotter and caused more harm than 1997-98, leaving scars "written in the geography and appearance of global reefs for decades to come," said Georgia Tech climate scientist and coral expert <a href="http://shadow.eas.gatech.edu/~kcobb/">Kim Cobb</a> .
"This El Nino has caused some of the worst coral bleaching and death of any event we've ever seen," said <a href="http://coralreefwatch.noaa.gov/satellite/index.php">NOAA coral reef watch</a> coordinator Mark Eakin. "We've had enough of this."
Some in California had hoped that the drought would be busted by the El Nino, which generally brings more rain to California and the South. But even at the start, NOAA had cautioned that the rain deficit was too big for the El Nino to fix. And while it was rainy, it wasn't enough, Halpert said.
Earth is now in the neutral part of the natural cycle of El Ninos, which includes the cooler flip side, La Nina. But don't expect that to last. NOAA forecasts a 50 percent chance of La Nina by the end of the summer and 75 percent chance by the end of the fall.
La Ninas generally bring more hurricanes to the Atlantic instead of the Pacific, but doesn't have much impact on summer temperature or rain in the United States. It often features drier-than-normal conditions in the U.S. Southwest and wetter conditions in the Pacific Northwest.
In the winter, La Nina often brings lots of rain to parts of Australia and Indonesia and cooler temperatures in parts of Africa, Asia, South America and Canada.
Cobb said her work has found some evidence, not enough to be conclusive, that man-made global warming is causing bigger El Ninos more often.
Global temperatures with the El Nino that just ended have been about 0.8 degrees warmer (0.45 degrees Celsius) than the 1998 El Nino, according to NOAA.
"This has been a bellwether event," Cobb said.
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Follow Seth Borenstein at <a href="http://twitter.com/borenbears" target="_blank" rel="noopener">http://twitter.com/borenbears</a> and his work can be found at <a href="http://bigstory.ap.org/content/seth-borenstein" target="_blank" rel="noopener">http://bigstory.ap.org/content/seth-borenstein</a>
© 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.

Monstrous El Nino is over, now comes La Nina

Monstrous El Nino is over, now comes La Nina. This...

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Peer pressure drives consumers to buy sustainable products. If you purchased a Toyota Prius, you may have been driven by the desire to conserve the environment or to save yourself some money at the gas pump. But consumers may also choose to buy sustainable products to make themselves appear socially responsible to others. Before making purchases, they evaluate how their decisions will stack up against their peers', according to a new study.

The study, "Social Responsibility and Product Innovation," forthcoming in Marketing <a href="https://www.earth.com/video/the-science-of-aging/">Science</a>, examines how understanding this phenomenon, known as "conspicuous conservation," may help leading companies shape their product innovation strategies, especially in ubiquitous product categories such as cars. Peer pressure drives consumers to buy sustainable products

"The design of the Prius is easily noticed by other people on the road, and consumers care about that. The value that I get from driving a Prius may depend upon how many other people in my social circle are also driving environmentally friendly cars. The value is higher if I'm the only one," says Ganesh Iyer, a professor in the Marketing Group at <a href="https://www.bing.com/search?q=UC+Berkeley%27s&amp;cvid=79d673a0105447a18d551485258bc082&amp;FORM=ANAB01&amp;PC=HCTS">UC Berkeley's</a> Haas School of Business, and one of the study's authors. "Conversely, if an individual is the only one in his or her social circle who is driving a gas-guzzler, there will be pressure to conform."

The paper is co-authored by David Soberman of the University of Toronto's Rotman School of Management.

Refraining from buying a product that damages the environment can generate social value for consumers. This need by consumers to measure up to their peers -- a concept called social comparison preference -- can provide marketers with valuable insights about how they can enhance the desirability of their products.

"We are trying to capture this issue of social comparison in markets, which is important for visible products like cars and clothing," says Iyer. "Making a product better on a social or environmental dimension is not the same as simply improving its quality, it is about leveraging social comparison preferences."

The researchers developed a model linking the R&amp;D decisions of firms to the interplay of consumers' social comparison preferences (their need to stack up) and how much they are willing to pay. The analysis shows that social comparison can provide incentive for a company to develop innovations in sustainability when the product category is mature and most consumers are already users of that category. In the case of the Prius, for example, most consumers already drive.

Heightened media attention also helps green products become more socially valuable, according to the research. For instance, as the media focused more and more on the effect of palm oil production on deforestation, many consumer product companies started producing palm-oil free products.

The paper also cites Levi's Water Less™ jeans and Clorox's Green Works cleaners as examples of innovative products developed to respond to consumers' social preferences. Levi's spent three years developing a process to create denim that requires less water and fewer chemicals to produce, and Clorox spent over $20M to produce eco-friendly, natural cleaning products.

The research study's findings, says Iyer, underscore the value for companies to understand their consumers' preferences with respect to social responsibility and to use that understanding in determining long-term innovation and product strategies.


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Peer pressure drives consumers to buy sustainable products

Peer pressure drives consumers to buy sustainable products. If you...

Environmental changes put a cap on species richness. The number of species that can exist on Earth depends on how the environment changes, according to new research led by the University of Southampton.
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By analyzing the fossil record of microscopic aquatic creatures called planktonic foraminifera, whose fossil remains now resemble miniaturized popcorn and date back millions of years, the research provided the first statistical evidence that <a href="https://www.earth.com/news/sea-stars-may-be-drowning-in-their-environment/">environmental</a> changes put a cap on species richness.

Lead author of the study, published in the journal Ecology Letters, Dr Thomas Ezard, an evolutionary ecologist at the University of Southampton, said: "While the idea of infinite species on a finite Earth is clearly fanciful, the relevance of upper limits to diversity is still a fractious debate amongst evolutionary biologists, ecologists and palaeontologists.Environmental changes put a cap on species richness

"We are the first to show statistically that this upper limit is environmentally dependent. It's intuitive that a changing environment alters how many species we see -- the spatial gradient of more species in the tropics than at the poles is pervasive evidence for its large-scale impact.

"However, analyses of how species numbers have changed over time have assumed that any limit has always been the same, even through periods of massive climate upheaval. Our data reject this idea of fixed rules for competition among species and instead show that the limit to the number of species that can co-exist on Earth is much more dynamic. Climate and geology are always changing, and the limit changes with them."

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While previous research typically focused individually on either biological, climate change or geological explanations, this new research examined the co-dependence of these factors on how species interact.

Looking at the fossil history of 210 evolutionary species of macroperforate planktonic foraminifera in the Cenozoic Era from 65 million years ago to the present, the study found that the number of species was almost certainly controlled by competition among themselves and probably kept within a finite upper limit.

Dr Ezard added: "We used mathematical models to reveal how environmental changes influence both the rate of diversification among species and how many species can co-exist at once. Our results suggest that the world is full of species, but that the precise fullness varies through time as environmental changes alter the outcome of competition among species."

The study also involved Professor Andy Purvis from the Natural History Museum. He said: "Scientists have long argued that environmental changes are likely to impact the number of species that can co-exist on Earth, but the fossil record is usually too incomplete for powerful statistical testing. Microfossils -- especially planktonic foraminifera -- give us a record with almost no gaps. It's this complete evolutionary history that lets us decide between these different hypotheses of how species interacted millions of years ago."


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Environmental changes put a cap on species richness

Environmental changes put a cap on species richness. The number...

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Average 'dead zone' predicted for Gulf of Mexico. Scientists forecast that this year's Gulf of Mexico dead zone -- an area of low to no oxygen that can kill fish and marine life - will be approximately 5,898 square miles or about the size of Connecticut, the same range as it has averaged over the last several years.

The dead zone in the Gulf of <a href="https://www.earth.com/news/experts-track-the-flow-of-nutrients-in-the-gulf-of-mexico/">Mexico</a> affects nationally important commercial and recreational fisheries. Hypoxic zones or "dead zones" are caused by high levels of nutrients, primarily from activities such as industrialized agriculture and inadequate wastewater treatment. Average 'dead zone' predicted for Gulf of Mexico

The low oxygen levels cannot support most marine life and habitats in near-bottom waters. Organisms that can flee the dead zones leave the area, while others which cannot leave are stressed or die of suffocation. Reducing nutrients flowing to the Gulf would help the situation since, under normal conditions, this area contains a diversity of marine life, critical habitats, and a number of key fisheries.

"Dead zones are a real threat to Gulf fisheries and the communities that rely on them," said Russell Callender, Ph.D., assistant NOAA administrator for the National Ocean Service. "We'll continue to work with our partners to advance the science to reduce that threat. One way we're doing that is by using new tools and resources, like better predictive models, to provide better information to communities and businesses."

The NOAA-sponsored Gulf of Mexico hypoxia forecast is improving due to advancements of individual models and an increase in the number of models used for the forecast. Forecasts based on multiple models are called ensemble forecasts and are commonly used in hurricane and other weather forecasts.

This year marks the second year that a four-model forecast has been used. The four individual model predictions ranged from 5,204 to 6,823 square miles, and had a collective predictive interval of 3,200 to 8,597 square miles. The forecast assumes typical weather conditions, and the actual dead zone could be disrupted by hurricanes or tropical storms. Data from these four models are used to determine and meet the nutrient reduction targets set by the interagency Mississippi River/Gulf of Mexico Watershed Nutrient Task Force.

The ensemble of models was developed by NOAA-sponsored modeling teams and researchers at the University of Michigan, Louisiana State University, Louisiana Universities Marine Consortium, Virginia Institute of Marine Sciences/College of William and Mary, Texas A&amp;M University, North Carolina State University, and the United States Geological Survey. The hypoxia forecast is part of a larger NOAA effort to deliver ecological forecasts that support human health and well-being, coastal economies, and coastal and marine stewardship.

The Gulf of Mexico hypoxia forecast is based on nutrient runoff and river and stream data from USGS. USGS estimates that 146,000 metric tons of nitrate and 20,800 metric tons of phosphorus flowed down the Mississippi and Atchafalaya rivers into the Gulf of Mexico in May 2016. This is about 12 percent above the long-term (1980-2015) average for nitrogen, and 25 percent above the long-term average for phosphorus.

USGS operates more than 2,700 real-time stream gauges, 60 real-time nitrate sensors, and collects water quality data at long-term stations throughout the Mississippi River basin to track how nutrient loads are changing over time.

"By expanding the real-time nitrate monitoring network with partners throughout the basin, USGS is improving our understanding of where, when, and how much nitrate is pulsing out of small streams and large rivers and ultimately emptying to the Gulf of Mexico," said Sarah J. Ryker, Ph.D., acting deputy assistant secretary for water and science at the Department of the Interior. "The forecast puts these data to additional use by showing how nutrient loading fuels the hypoxic zone size."

The confirmed size of the 2016 Gulf dead zone will be released in early August, following a monitoring survey from July 24 to August 1, conducted on a NOAA vessel and funded through a partnership between NOAA, Northern Gulf Institute, and the Louisiana Universities Marine Consortium.
###
USGS provides science for a changing world. Visit <a href="http://www.usgs.gov/" target="_blank" rel="noopener">USGS.gov</a>, and follow us on Twitter @USGS and our other social media channels. Subscribe to our news releases via email, RSS or Twitter.

NOAA's mission is to understand and predict changes in the Earth's environment, from the depths of the ocean to the surface of the sun, and to conserve and manage our coastal and marine resources. Join us on Twitter, Facebook, Instagram and our other social media channels.

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Average 'dead zone' predicted for Gulf of Mexico

Average 'dead zone' predicted for Gulf of Mexico. Scientists forecast...

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Today’s Video of the Day from <a href="https://www.igb.illinois.edu/">Carl R. Woese Institute for Genomic Biology</a> reveals how scientists can modify common crops like soybean, rice, and wheat to protect them from heat stress.



“We need to double crop production by 2050 to feed a growing global population, and not only are we not on track to do that, but climate change is further complicating things,” said Amanda Cavanagh, a lecturer at the University of Essex. 



The study is part of Realizing Increased Photosynthetic Efficiency (RIPE), an international research project that aims to develop food crops that turn the sun’s energy into food more efficiently.



“Using an engineering approach we designed multiple alternative metabolic pathways to photorespiration. Testing them in the field showed increases in productivity which led Amanda to significantly move the project forward by showing our engineered plants can withstand pretty extreme temperature stress,” said study co-author and RIPE researcher Paul South.&nbsp;



“As the climate changes and temperature stresses increase the pressure on our global food supply, farmers will need every tool available including engineering approaches like the synthetic biology used here to maintain safe and productive harvests.”



The experts tested plants modified to have more efficient photorespiration to see if they were better adapted to warmer temperatures.&nbsp;



The team found that the engineered plants produced 26 percent more biomass than the wild-type plants exposed to the same temperatures, and had 15 percent less yield loss under the higher temperatures.



Video Credit: Amanda Nguyen/University of Illinois



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Designing crops that can beat the heat

[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"] Today’s Video of the Day from Carl...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Remote sensing will revolutionize the way we monitor trees

[sendtonews key="EjmSP20gQK-2593093-12187" type="single"] Today's Video of the Day from NASA...

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 



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Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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The rapid retreat of the Columbia Glacier

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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2022 illustrated the consequences of a warming climate

[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"] Today's Video of the Day from NASA...

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Satellites reveal how Earth's systems are interconnected

[sendtonews key="JbW4VsY53O-1632195-12187" type="single"] Satellites reveal how Earth's systems are interconnected...

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes how Earth is unique in our solar system for its ability to sustain liquid water on its surface. But now, the water cycle is shifting as the climate warms, and scientists must find ways to predict how these changes will affect water availability.



Overall, 96 percent of Earth's water is saltwater, and nearly all of freshwater is found in ice and groundwater. These sources of water are linked as it passes through solid, liquid and gas phases.



In a warmer climate, the water cycle will be transformed. It will be easier for water to evaporate and form clouds, and storms will become more frequent and intense. Some regions will get too much water, while others will be left without enough water. In addition, soil moisture will be lost - which threatens food security.



Scientists are using satellite data from over the last 40 years to track changes that are happening in the water cycle. This will ultimately help us prepare for extreme events and better manage our water resources, according to ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Tracking changes in Earth's water cycle

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Saturn,-,High,Resolution,3d,Images,Presents,Planets,Of,The

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard Space Flight Center</a> features images of Saturn from NASA’s Hubble Space Telescope. The photographs capture the start of the mysterious "spoke season" on Saturn - when unexplained features appear on its rings. 



According to NASA, both the cause of the spokes and their seasonal variability have yet to be fully explained by planetary scientists.



"Like Earth, Saturn is tilted on its axis and therefore has four seasons, though because of Saturn's much larger orbit, each season lasts approximately seven Earth years. Equinox occurs when the rings are tilted edge-on to the Sun," explains NASA.



"The spokes disappear when it is near summer or winter solstice on Saturn. (When the Sun appears to reach either its highest or lowest latitude in the northern or southern hemisphere of a planet.) As the autumnal equinox of Saturn's northern hemisphere on May 6, 2025, draws near, the spokes are expected to become increasingly prominent and observable."



Experts believe that the spokes may be a product of the planet's variable magnetic field. When magnetic fields interact with solar wind, an electrically charged environment is created. This phenomenon is visible on Earth as the northern lights.&nbsp;



"Scientists think that the smallest, dust-sized icy ring particles can become charged as well, which temporarily levitates those particles above the rest of the larger icy particles and boulders in the rings," says NASA.



The spokes were first observed in the early 1980s by NASA's Voyager mission. Depending on the angle of the rings, the spokes can appear dark or light.



"Thanks to Hubble's OPAL program, which is building an archive of data on the outer solar system planets, we will have longer dedicated time to study Saturn’s spokes this season than ever before," said NASA senior planetary scientist Amy Simon, head of the Hubble Outer Planet Atmospheres Legacy (OPAL) program.



"Despite years of excellent observations by the Cassini mission, the precise beginning and duration of the spoke season is still unpredictable, rather like predicting the first storm during hurricane season."



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Mysterious "spoke season" captured on Saturn

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Closeup,Of,Fresh,Green,The,Napier,Bush,Grass,As,Animal

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Today’s Video of the Day from <a href="http://www.ntu.edu.sg/">NTU Singapore</a> reveals that some plants can remove toxic heavy metals from soil.&nbsp;



The researchers analyzed samples of various tropical plant species to test for levels of heavy metals and metalloids. The study showed that there are existing plants with high levels of these contaminants, which means that these species are great candidates for drawing pollutants out of the soil.&nbsp;



Among the plants examined in the study, 12 species had accumulated several types of heavy metals and metalloids. These plants are widely available, including species that are native to Singapore.



“In a small nation like Singapore, land may be repurposed to support new development plans, so it is important that we have a green and sustainable way to remediate land that is contaminated," said Professor Lam Yeng Ming.



"We set out to uncover how to better make use of tropical plants to do phytoremediation and through advanced characterization techniques, we showed how some of these tropical plant species can be an environmentally friendly and literally a 'green' way to remove contaminants in soil."&nbsp;



"Phytoremediation also has benefits of cost effectiveness, simplicity of management, aesthetic advantages, and long-term applicability and sustainability. The strategy prevents erosion and metal leaching by stabilizing or accumulating heavy metals, so that helps reduce the risk of contaminant spread.”



Video Credit: NTU Singapore



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Plants help remove heavy metals from contaminated soil

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes why herbicides are not as effective in killing weeds anymore. In the 20th century, chemical companies developed thousands of herbicides. The most commonly used herbicide was glyphosate, which was introduced in 1974.



Over the past few decades, dozens of species of weeds have evolved resistance to glyphosate. Depending on the site of action, the part of the plant that an herbicide interacts with, weeds may even be resistant to herbicides that have not been developed yet.&nbsp;



With increasing resistance to glyphosate and other herbicides, weeds are - once again - becoming a major concern for farmers.&nbsp;



Video Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Weeds are becoming increasingly resistant to herbicides

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Today’s Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> (JPL) describes a dust storm on Mars that was nearly twice the size of the United States. As the storm covered the southern hemisphere of the planet, some of NASA’s explorers had to delay their normal activities.



NASA’s Insight lander put itself in a "safe mode" for 11 days to conserve battery power because solar power was disrupted by the dust. The Ingenuity Mars Helicopter postponed flights until conditions improved.



"A fleet of NASA orbiters monitor Martian dust storms like this one and serve as lifelines to Earth by relaying data from the rovers and lander on the ground back to the team. This includes the Mars Reconnaissance Orbiter, MAVEN, and Odyssey," reports JPL.



"Dust storms like this recent one start close to the ground and are spread by wind as they rise – warming the cold Martian atmosphere."



The images in the video were captured by NASA’s Curiosity as the dust rolled in. A fleet of orbiters monitored the dust storm from above, relaying data from Mars’ explorers back to scientists on Earth.



Video &amp; Image Credit: NASA/JPL-Caltech/ASU/MSSS



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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NASA monitors giant dust storms on Mars

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Today's Video of the Day from the <a href="http://www.esa.int/">European Space Agency</a> features Qeshm Island in the Strait of Hormuz. This strait provides the only sea passage from the Persian Gulf to the open ocean.



Qeshm is separated from the Iranian coast by the Clarence Strait, also known as Khuran.&nbsp;The Hara Forest Protected Area is a network of shallow waterways and forest located between the island and the mainland. This protected region is home to sea turtles, snakes, and more than 150 species of migrating birds.



Qeshm is famous for its wide range of&nbsp;ecotourist&nbsp;attractions, such as the&nbsp;Hara marine forests. According to environmentalists, about 1.5 percent of the world birds and 25 percent of Iran's native <a href="https://www.earth.com/news/female-hummingbirds-avoid-sexual-harassment-by-looking-like-males/">birds</a> annually migrate to the forests, which are the first national geo park in Iran.



Tourists are also drawn to the island to see an age-old Portuguese&nbsp;fort, historic mosques, the&nbsp;Seyyed Mozaffar&nbsp;and&nbsp;Bibi Maryam&nbsp;shrines, and the "Valley of Stars."



The average temperature on the island is 81 degress and the region is often hot and humid. From June to August, the island is described as being oppressively hot. The ideal time to visit is during the winter season. 



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Qeshm Island in the Strait of Hormuz

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Inhambane Bay in southeast Mozambique.&nbsp;



"Inhambane Bay is a deep inlet into which the small Mutamba River flows," says ESA. "On one side of the bay lies the historical city of Inhambane, capital of the Inhambane Province, while the sister city of Maxixe, the economic capital of Inhambane, sits across from it. The province is the second largest grower of cashews, after Nampula, and it also produces coconut and citrus fruits."



The beaches of Barra and Tofo are popular with tourists. There are also coral reefs along the long coastline of Inhambane, making it an ideal destination for scuba diving and snorkeling.



"Mozambique’s extensive coastline heightens the country’s vulnerability to tropical cyclones that develop in the Indian Ocean as well as storm surge flooding," says ESA.



"More than half of the population lives in low lying coastal areas, putting communities at risk. Inhambane Bay was dangerously close to where Cyclone Idai made landfall in 2019 causing widespread destruction to the country."



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Inhambane Bay in southeast Mozambique

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency </a>&nbsp;features the Kangerlussuaq Glacier, one of the largest tidewater outlet glaciers in Greenland. The glacier is located on the east coast of the Greenland ice sheet.



As human-induced climate change continues to drive up temperatures, global ice loss is accelerating at an alarming rate. ESA reports that, over the past decade alone, 3.5 trillion tons of ice have melted from the Greenland ice sheet. This is enough to cover the UK with meltwater 15 meters deep.



Based on satellite imagery, researchers determined that Kangerlussuaq entered a new phase of rapid retreat and acceleration in 2017. In their study, published in <a href="https://www.frontiersin.org/articles/10.3389/feart.2019.00123/full">Frontiers in Earth Science</a>,&nbsp; the experts report that the glacier's ice front is now at its most retreated position since the early 20th century.



"Given Kangerlussuaq’s previous impacts on both the magnitude and pattern of ice sheet wide mass loss, we predict that its new phase of retreat, acceleration and thinning will markedly enhance the south-east region’s contribution to increasing discharge from the ice sheet," wrote the study authors.&nbsp;&nbsp;



"More broadly, accurate forecasting of the ice sheet’s contribution to sea level rise will require a deeper understanding of, and responses to, these non-linear ice dynamic processes."



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Kangerlussuaq Glacier on the Greenland ice sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the complex relationship between ocean and climate. ESA's Climate Change Initiative will help us understand how oceans influence the climate and how climate change is impacting the oceans.&nbsp;



"Earth’s oceans are huge heat stores, soaking up 93% of the excess heat from human activity over the past 70 years. Ocean currents redistribute heat around the planet, from the Equator to the poles. Where this ocean heat goes influences weather patterns and regional climate," explains ESA.



"As well as absorbing heat, oceans are a natural carbon sink, absorbing a quarter of carbon dioxide emissions from human activity. This has led to the acidification of ocean water, threating marine life."



The amount of heat and carbon dioxide soaked up by the ocean depends on specific variables, including phytoplankton, temperatures, waves, salinity, and ice cover. Satellites can be used to measure these variables from space.



"From their unique vantage point, satellites provide key information for understanding the complexities of our planet and monitoring environmental issues," says ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Ocean heat influences regional climate

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the importance of monitoring the shape of the sea surface, which is constantly changing. These observations have many applications, such as ship routing, <a href="https://www.earth.com/news/the-modem-ocean-is-a-tough-place-for-whales-to-survive/">ocean</a> current forecasting, and debris tracking.



"A project supported by the Discovery element of ESA’s Basic Activities recently investigated a new technique to measure sea surface topography very precisely," reports ESA.



"The technique involves looking at satellite navigation (GNSS) signals that have been reflected off of the sea surface at very low angles. At these so-called grazing angles, waves and surface roughness have very little impact on the reflection process; the sea surface acts as a very smooth mirror."



Estel Cardellach is the principal investigator at the Institute for Space Studies of Catalonia, who first submitted the idea for the project.



“In a mirror-like reflection the phase of the signal can be tracked – it is continuous," said Cardellach. "Different surface heights result in different phase measurements. It gives a very precise measurement of the surface altitude at a few centimetres’ precision.”



The researchers developed a GNSS receiver and set up an experiment in the Balaeric Islands to collect signals from the receiver that were reflected off the sea surface. Ultimately, these signals will provide improved measurements of the shape of the sea surface.



Image/ Video Credit: ESA



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring the dynamic shape of the sea surface

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Aerial,Photo,Of,River,In,Amazon,Rainforest,Jungle,In,Peru

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Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA’s Goddard Space Flight Center</a> describes how scientists are using autonomous sound sensors to monitor deforestation in the Amazon. By recording soundscapes, the experts can determine which animals are present through their distinct sounds.&nbsp;



Using this method, sounds can be used as scientific measurements to analyze the effects of deforestation. The researchers will gain a better understanding of how the acoustics of a forest can be used to measure its health.&nbsp;



"From space, parts of the Amazon rainforest that have previously been logged or burned may look lush and green, like a place buzzing with activity and full of sounds. But inside the rainforest, the animal life may tell a different story, of a harsh environment and a quieter soundscape," says NASA.



Video Credit: NASA’s Goddard Space Flight Center&nbsp;



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring deforestation in the Amazon through sounds

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