Depletion of perennial sea ice in the East Arctic Ocean

Details Depletion of perennial sea ice in the East Arctic Ocean Depletion of perennial sea ice in the East Arctic Ocean

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3317501n&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 17, CiteID L17501

Physics

20

Cryosphere: Sea Ice (4540), Cryosphere: Remote Sensing, Cryosphere: Mass Balance (1218, 1223), Cryosphere: Distribution, Cryosphere: Instruments And Techniques

Scientific paper

The extent of perennial sea ice in the East Arctic Ocean (0-180°E) decreased by nearly one half with an abrupt reduction of 0.95 × 106 km2, while the West Arctic Ocean (0-180°W) had a slight gain of 0.23 × 106 km2 between 2004 and 2005, as observed by satellite scatterometer data during November-December. The net decrease in the total perennial ice extent is 0.72 × 106 km2, about the size of Texas. Perennial ice in the East Arctic Ocean continued to be depleted with an areal reduction of 70% from October 2005 to April 2006. With the East Arctic Ocean dominated by seasonal sea ice, a strong summer melt may open a vast ice-free region with a possible record minimum ice extent largely confined to the West Arctic Ocean. Simultaneous scatterometer measurements of sea ice and winds will be crucial for sea ice monitoring and forecasts.

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