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Proceedings Paper

Arctic climate characteristics and recent trends revealed by the AVHRR polar pathfinder data set
Author(s): Xuanji Wang; Jeffrey R. Key; Michael J. Pavolonis
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Paper Abstract

The newly available Advanced Very High Resolution (AVHRR) Polar Pathfinder (APP) data set was used to retrieve cloud amount, cloud optical depth, cloud particle phase and size, cloud temperature, surface temperature, surface broadband albedo, radiation fluxes and cloud forcing in the Arctic for the period 1982-1999. The spatial and temporal distributions of those retrieved Arctic climate parameters together with an analysis of their seasonal and interannual variability, especially surface and cloud properties are presented here. The present study indicates that the Arctic has been warming in spring, summer and autumn, the decadal rates are 1.1°C degree, 0.68°C degree and 0.70°C degree, respectively. While in winter the Arctic has been cooling at the decadal rate of -0.34°C degree. The Arctic surface broadband albedo also signals the warming trend of the Arctic at the decadal rate of -3.0% at the confidence level of 98.8% in autumn, indicating a longer melt period and later freeze-up. Results also show that the Arctic has become cloudier in spring and summer, but less cloudy in winter.

Paper Details

Date Published: 16 June 2003
PDF: 9 pages
Proc. SPIE 4895, Applications with Weather Satellites, (16 June 2003); doi: 10.1117/12.466531
Show Author Affiliations
Xuanji Wang, Univ. of Wisconsin/Madison (United States)
Jeffrey R. Key, National Oceanic and Atmospheric Administration (United States)
Michael J. Pavolonis, Univ. of Wisconsin/Madison (United States)

Published in SPIE Proceedings Vol. 4895:
Applications with Weather Satellites
W. Paul Menzel; Wen-Jian Zhang; John Le Marshall; Masami Tokuno, Editor(s)

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