Sea ice conditions and melt season duration variability within the Canadian Arctic Archipelago: 1979-2008

被引：100

作者：

Howell, Stephen E. L. ^{[1
,2
]}

Duguay, Claude R. ^{[1
,2
]}

Markus, Thorsten ^{[3
]}

机构：

[1] Univ Waterloo, Interdisciplinary Ctr Climate Change, Waterloo, ON N2L 3G1, Canada

[2] Univ Waterloo, Dept Geog & Environm Management, Waterloo, ON N2L 3G1, Canada

[3] NASA, Goddard Space Flight Ctr, Cryospher Sci Branch, Greenbelt, MD 20771 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Geophysics - Earth sciences;

D O I：

10.1029/2009GL037681

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Sea ice conditions and melt season duration within the Canadian Arctic Archipelago (CAA) were investigated from 1979-2008. The CAA is exhibiting statistically significant decreases in average September total sea ice area at -8.7% decade(-1). The melt season duration within the CAA is increasing significantly at 7 days decade(-1). 2008 represented the longest melt season duration within the CAA over the satellite record at 129 days. Average September multi-year ice (MYI) area is decreasing at -6.4% decade(-1) but has yet to reach statistical significance as a result of increasing MYI dynamic import from the Arctic Ocean. Results also find that the Western Parry Channel (WPC) region of the Northwest Passage (NWP) will continue to be susceptible to MYI as the transition to a summer-time sea ice free Arctic continues. The processes responsible for the temporary clearing of the WPC region of the NWP in 2007 were also identified. Citation: Howell, S. E. L., C. R. Duguay, and T. Markus (2009), Sea ice conditions and melt season duration variability within the Canadian Arctic Archipelago: 1979-2008, Geophys. Res. Lett., 36, L10502, doi: 10.1029/2009GL037681.

引用

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