A new approach to estimating the albedo for snow-covered surfaces in the satellite UV method

被引：19

作者：

Arola, A

Kaurola, J

Koskinen, L

Tanskanen, A

Tikkanen, T

Taalas, P

Herman, JR

Krotkov, N

Fioletov, V

机构：

[1] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland

[2] NASA, Goddard Space Flight Ctr, Atmospheres Lab, Greenbelt, MD 20771 USA

[3] Meteorol Serv Canada, Toronto, ON M3H 5T4, Canada

[4] Univ Maryland Baltimore Cty, Goddard Earth Sci & Technol Ctr, Baltimore, MD 21228 USA

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 2003年 / 108卷 / D17期

关键词：

ultraviolet radiation; snow albedo; satellite; estimates of UV irradiance; reflectivity;

D O I：

10.1029/2003JD003492

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

[1] This paper describes a new method for estimating snow albedo for satellite retrieval of surface UV irradiance and daily UV doses over snow-covered terrains. The method is based on combining satellite and meteorological analysis data. The satellite data exploited in this work are the measured reflectivities of the Total Ozone Mapping Spectrometer/ Nimbus 7 instrument that coincides with the European Centre for Medium-Range Weather Forecasts ERA-15 reanalyzed meteorological data. We compared satellite-retrieved UV daily doses to the ground-based measurements of two Finnish and five Canadian sites. The comparison clearly showed that the new snow albedo approach improves the accuracy of the satellite-retrieved UV doses.

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页数：5

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