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contributor authorNichol, S. E.
contributor authorPfister, G.
contributor authorBodeker, G. E.
contributor authorMcKenzie, R. L.
contributor authorWood, S. W.
contributor authorBernhard, G.
date accessioned2017-06-09T14:08:51Z
date available2017-06-09T14:08:51Z
date copyright2003/08/01
date issued2003
identifier issn0894-8763
identifier otherams-13276.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4148708
description abstractTo gauge the impact of clouds on erythemal (sunburn causing) UV irradiances under different surface albedo conditions, UV measurements from two Antarctic sites (McMurdo and South Pole Stations) and a midlatitude site (Lauder, New Zealand) are examined. The surface albedo at South Pole remains high throughout the year, at McMurdo it has a strong annual cycle, and at Lauder it is low throughout the year. The measurements at each site are divided into clear and cloudy subsets and are compared with modeled clear-sky irradiances to assess the attenuation of UV by clouds. A radiative transfer model is also used to interpret the observations. Results show increasing attenuation of UV with increasing cloud optical depth, but a high surface albedo can moderate this attenuation as a result of multiple scattering between the surface and cloud base. This effect is of particular importance at high latitudes where snow may be present during the summer months. There is also a tendency toward greater cloud attenuation with increasing solar zenith angle.
publisherAmerican Meteorological Society
titleModeration of Cloud Reduction of UV in the Antarctic Due to High Surface Albedo
typeJournal Paper
journal volume42
journal issue8
journal titleJournal of Applied Meteorology
identifier doi10.1175/1520-0450(2003)042<1174:MOCROU>2.0.CO;2
journal fristpage1174
journal lastpage1183
treeJournal of Applied Meteorology:;2003:;volume( 042 ):;issue: 008
contenttypeFulltext


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