Global temperatures, April 2003. Infrared satellite map of worldwide surface and cloud temperatures in April 2003. The colour-coded map shows temperatures in degrees Celsius, ranging from 40 degrees Celsius (dark red) down to minus 40 degrees Celsius (purple). Features seen here include the deserts of North Africa, warm tropical waters, cold equatorial clouds (yellow band), cloudy temperate regions, and cold polar regions. The data was obtained by the AIRS (Atmospheric Infrared Sounder) instrument as part of the EOS (Earth Observing System) mission, on NASA's Aqua satellite.
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