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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