‘First Light’ Taken by NASA’s Newest CERES Instrument. Therefore In the longwave image, heat energy radiated from Earth (in watts per square meter) is shown in shades of yellow, red, blue and white. Although The brightest-yellow areas are the hottest and are emitting the most energy out to space. And while the dark blue areas and the bright white clouds are much colder. Therefore emitting the least energy. Increasing temperature, decreasing water vapor, and decreasing clouds will all tend to increase the ability of Earth to shed heat out to space. Credit: NASA/NOAA/CERES Team
Also the increase in temperature and causing the vapor makes these clouds.