Channel 1 of the AVHRR is located within the visible part of the spectrum. It is most sensitive to wavelengths between .53 um and .73 um. You can use this imagery alone to:

• Observe land surface types
• Analyze the albedos of cloud cover and the Earth's surface
• Used to detect smoke and haze
• Discriminate between ice and water clouds.

  Ice clouds tend to be poor reflectors of visible radiation.

  Water clouds tend to be good reflectors of visible light.

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