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This channel on GOES is also characterized by high radiometric sensitivity and low noise. The color bar on the bottom of the image extends from warm and dry on the left to cold and cloudy on the right. In this image, dry areas are dark; brighter shades of gray depict increasingly moist areas, while cirrus clouds and thunderstorm tops are colored.
Close inspection of each regime—dry, moist, or cloudy—reveals nearly noise-free imagery. This channel can be used for feature tracking in cloud-free air as well as monitoring thunderstorm cloud-top temperatures. However, the 6.7 micron channel at 8 kilometers has a poorer spatial resolution than the 10.7 micron channel at 4 kilometers.
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