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Science 14 March 2003:
Vol. 299. no. 5613, pp. 1725 - 1728
DOI: 10.1126/science.1078065
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Reports
Recent Trends in Arctic Surface, Cloud, and Radiation Properties from Space
Xuanji Wang,1*
Jeffrey R. Key2
Trends in satellite-derived cloud and surface properties
for 1982 to 1999 show that the Arctic has warmed and become cloudier in
spring and summer but has cooled and become less cloudy in winter. The
increase in spring cloud amount radiatively balances changes in surface
temperature and albedo, but during summer, fall, and winter, cloud
forcing has tended toward increased cooling. This implies that, if
seasonal cloud amounts were not changing, surface warming would be even
greater than that observed. Strong correlations with the Arctic
Oscillation indicate that the rise in surface temperature and changes
in cloud amount are related to large-scale circulation rather than to
local processes.
1 Cooperative Institute for Meteorological
Satellite Studies, University of Wisconsin-Madison, 1225 West Dayton
Street, Madison, WI 53706, USA.
2 Office of Research
and Applications, National Oceanic and Atmospheric Administration,
National Environmental Satellite, Data, and Information Service, 1225 West Dayton Street, Madison, WI 53706, USA.
*
To whom correspondence should be addressed. E-mail:
xuanjiw{at}ssec.wisc.edu
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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
- Role of Land-Surface Changes in Arctic Summer Warming.
- F. S. Chapin III, M. Sturm, M. C. Serreze, J. P. McFadden, J. R. Key, A. H. Lloyd, A. D. McGuire, T. S. Rupp, A. H. Lynch, J. P. Schimel, et al. (2005)
Science
310, 657-660
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- Do Satellites Detect Trends in Surface Solar Radiation?.
- R. T. Pinker, B. Zhang, and E. G. Dutton (2005)
Science
308, 850-854
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