Cyclones over Fram Strait: impact on sea ice and variability |
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Authors: | Burghard Brümmer Gerd Müller Björn Affeld Rüdiger Gerdes Michael Karcher Frank Kauker |
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Institution: | B. Brümmer, G. Müller &B. Affeld, Meteorological Institute, University of Hamburg, Bundesstraße 55, D-20146 Hamburg, Germany;R. Gerdes, M. Karcher &F. Kauker, Alfred Wegener Institute for Polar and Marine Research, Kolumbusstraße, D-27568 Bremerhaven, Germany. |
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Abstract: | The relation between sea ice drift and cyclone activity in the Fram Strait region was studied by both in situ observations and long-term time series. In a 1999 field campaign, the atmospheric forcing and the ice drift were determined using a research aircraft and drifting ice buoys. One cyclone entered the experimental area and caused a temporal increase in ice drift speed. Long-term studies are based on 16 years of cyclone statistics and model, satellite and sonar ice drift estimates. The actual impact of a cyclone depends on its particular track through Fram Strait. On the average, cyclones increase the Arctic ice export through Fram Strait. |
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