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GEOPHYSICAL RESEARCH LETTERS,
VOL. 32,
L04501,
4 PP., 2005
doi:10.1029/2004GL021810
Tracking the Arctic's shrinking ice cover: Another extreme September minimum in 2004
National Snow and Ice Data Center, University of Colorado, Boulder, Colorado, USA
National Snow and Ice Data Center, University of Colorado, Boulder, Colorado, USA
National Snow and Ice Data Center, University of Colorado, Boulder, Colorado, USA
National Snow and Ice Data Center, University of Colorado, Boulder, Colorado, USA
National Snow and Ice Data Center, University of Colorado, Boulder, Colorado, USA
Department of Aerospace Engineering Sciences, University of Colorado, Boulder, Colorado, USA
National Snow and Ice Data Center, University of Colorado, Boulder, Colorado, USA
Satellite passive microwave observations document an overall downward trend in Arctic sea ice extent and area since 1978. While the record minimum observed in September 2002 strongly reinforced this downward trend, extreme ice minima were again observed in 2003 and 2004. Although having three extreme minimum years in a row is unprecedented in the satellite record, attributing these recent trends and extremes to greenhouse gas loading must be tempered by recognition that the sea ice cover is variable from year to year in response to wind, temperature and oceanic forcings.
Received 21 October 2004; accepted 18 January 2005; published 25 February 2005.
Citation: (2005), Tracking the Arctic's shrinking ice cover: Another extreme September minimum in 2004, Geophys. Res. Lett., 32, L04501, doi:10.1029/2004GL021810.
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