Jenna King

Jenna King - microwave region of the spectrum...

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This NASA image combines sea surface temperature (SST) data obtained by the Aqua program, cloud data from the GOES satellite, and land data from the Terra satellite to show the atmospheric and oceanic conditions during Hurricane Katrina in 2005. All three pieces of the image use the principles of passive remote sensing, detecting radiation emitted by the earth at certain wavelengths. The Aqua program used the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) instrument to detect the SSTs. This is a passive-microwave radiometer, so it detects radiation in the
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Unformatted text preview: microwave region of the spectrum (>100 microns). SSTs can also be measured using infrared wavelengths (~10 microns) but then it is more likely to be affected by the presence of clouds. The clouds in the image come from visible imagery, so it detects radiation in the visible region of the spectrum (~0.5 microns). The land image was obtained using the MODIS instrument, which also detects radiation in the visible region of the spectrum....
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