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The Radiant Energy Budget of Clearcut And Forested Sites in West Virginia

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Radiant energy budget components were measured over a clearcut site and a hardwood forest site on a gaged watershed in West Virginia. Results show that clearcutting caused changes in both albedo and upward thermal radiation values. The magnitude of these changes varied by season of the year. The clearcutting had an albedo that was nearly constant at 14 percent during snowfree conditions but ranged up to 83 percent during periods of snow cover. On the other hand, the forest albedo ranged from 14 percent for a leafless and snowfree period to about 20 percent for full leaf conditions and to 32 percent during periods of snow cover. The clearcutting had greater upward thermal radiation losses except during periods of snow cover when both sites were nearly identical. Despite the seasonal variability, net radiation values for the two sites did not differ greatly except during periods of snow cover. Forest Sci. 16: 139-145.

Keywords: Albedo; net radiation

Document Type: Journal Article

Affiliations: Research Forester with the Northeastern Forest Exp. Sta., Forest Service, USDA, Durham, New Hampshire

Publication date: June 1, 1970

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