Physics
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3817502d&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 17, CiteID L17502
Physics
Cryosphere: Sea Ice (4540), Cryosphere: Polynas (4540), Cryosphere: Remote Sensing, Cryosphere: Thermodynamics (1011, 3611, 8411), Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes (0700, 0750, 0752, 0754)
Scientific paper
For 1992-2008, we use data from the Special Sensor Microwave/Imager (SSM/I) and the Advanced Microwave Scanning Radiometer-EOS (AMSR-E) to examine differences in ice production and export in the Weddell and Ross Seas. We find that the Ross production is three times that in the Weddell; the Ross export, twice that in the Weddell. In the Ross, the ice production has a statistically significant positive trend of about 21 km3 y-1 and approximately equals the export, while in the Weddell, the production trend is statistically flat and provides only about 60% of the export. For each sea, comparison of the ice production with the total winter sea ice volume shows that the Weddell polynyas produce 5-10% of the total; the Ross polynyas, 20-50%. The explanation for these differences is that in the Ross, the low-pressure system is better situated for generation of large polynyas than in the Weddell.
Drucker Robert
Kwok Ronald
Martin Seelye
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