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shared by zacmah on 29 Nov 07 - Cached

shared by zacmah on 23 Nov 07 - Cached

Albedos of typical materials in visible light range from up to 90% for fresh snow, to about 4% for charcoal, one of the darkest substances.
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- zacmah on 29 Nov 07
  
  ocean absorbs heat; when ice caps melt they increase the ocean's volume and warm the Earth.
  
  <div class="cArrow"> </div><div class="cContentInner">ocean absorbs heat; when ice caps melt they increase the ocean's volume and warm the Earth.</div>
  
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a distance, the ocean surface has a low albedo, as do most forests,
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The classic example of albedo effect is the snow-temperature feedback. If a snow covered area warms and the snow melts, the albedo decreases, more sunlight is absorbed, and the temperature tends to increase.
- zacmah on 29 Nov 07
  
  happening in the Arctic
  
  <div class="cArrow"> </div><div class="cContentInner">happening in the Arctic</div>
  
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Human activities have changed the albedo
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