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Digitale Medien

Surface albedo at a tower site in Lake Ontario (1972)

Nunez, M. ; Davies, J. A. ; Robinson, P. J.

Springer

Boundary layer meteorology 3 (1972), S. 77-86

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Details

ISSN: 1573-1472

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie , Physik

Notizen: Abstract Measurements of incoming global, diffuse and reflected radiation at a tower site in Lake Ontario are used to evaluate components of surface albedo. Albedo for diffuse radiation lies between 0.074 and 0.082 and a coefficient for backscatter from sub-surface water layers shows little deviation from a mean of 0.017. Direct beam albedo for a calm surface follows the Fresnel law. Waves increase direct-beam albedo particularly at higher solar zenith angles. A pronounced dependence of albedo upon zenith angle for clear skies decreases with increasing cloud amount and becomes undetectable in overcast conditions. On a daily basis, albedo ranged between 0.07 in early July to 0.11 in mid-November. Day-to-day scatter is within ±1% of the mean seasonal trend.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00769108

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