Physics
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28..791c&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 5, p. 791-794
Physics
9
Global Change: Climate Dynamics, Meteorology And Atmospheric Dynamics: Polar Meteorology, Oceanography: General: Climate And Interannual Variability, Information Related To Geographic Region: Arctic Region
Scientific paper
Analysis of a fifty-year record (1946-1995) of monthly-averaged sea level pressure data provides a link between the phases of planetary-scale sea level pressure waves and Arctic Ocean and ice variability. Results of this analysis show: (1) a breakdown of the dominant wave 1 pattern in the late 1960's, (2) shifts in the mean phase of waves 1 and 2 since this breakdown, (3) an eastward shift in the phases of both waves 1 and 2 during the years of simulated cyclonic Arctic Ocean circulation relative to their phases during the years of anticyclonic circulation, (4) a strong decadal variability of wave phase associated with simulated Arctic Ocean circulation changes. Finally, the Arctic atmospheric circulation patterns that emerge when waves 1 and 2 are in their extreme eastern and western positions suggest an alternative approach for determining significant forcing patterns of sea ice and high-latitude variability.
Cavalieri Donald J.
Häkkinen Sirpa
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