Cirrus Clouds Viewed with the 13.3 Micron Channel

Cloud Table

Cirrus Clouds Viewed with the 13.3 Micron Channel

This image shows cirrus clouds viewed with the GOES-12 13.3 micron carbon dioxide channel

• Brightness temperature influenced by emission from tropospheric carbon dioxide
• Brightness temperatures colder and more uniform than for longwave infrared window due to CO₂
• Cooling relative to longwave infrared window useful for cloud height determination
• More sensitive to thin cirrus (brightnes temperature colder) than for longwave infrared window
• Motion helpful in identifying thin cirrus

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