Unformatted text preview: highest clouds have the coolest IR reflectivity (shown by the cloud top) and appear blue. The water vapor satellite measures the wavelength of radiation that is readily absorbed by the water vapor molecules, 6.7 microns. This shows patterns in water vapor movement where clouds may not be seen. Red is very dry, purple and blue are moist but as the satellite is measuring the water vapor over the whole atmosphere column; there could be water vapor at the very surface. So using these theories, meteorologists can establish what type of cloud is being seen. Thin wispy on VIS but cold high blue clouds on IR are likely to be Cirrus such as over Western Canada, whereas other high blue clouds on the IR such as the system running along the East coast are thicker on the VIS suggesting cumulonimbus clouds due to the highest water vapor content shown on the 3 rd image....
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This note was uploaded on 01/08/2012 for the course MPO 551 taught by Professor Zhang,c during the Summer '08 term at University of Miami.
- Summer '08