image: This is a microwave image of Tropical Depression Debby in the Atlantic, from the Atmospheric Infrared Sounder (AIRS) on NASA's Aqua satellite on Aug. 22, 2006. This image is created from microwave radiation emitted by Earth's atmosphere and received by the instrument. It shows where the heaviest rainfall is taking place (in blue) in the storm. Blue areas outside of the storm where there are either some clouds or no clouds, indicate where the sea surface shines through. view more
Credit: NASA/JPL