On the Role of Atmospheric Forcing in September Sea Ice Extent in the Russian Arctic 1933-1996

Tuesday, 16 December 2014
Todd E Arbetter and Amanda H Lynch, Brown University, Providence, RI, United States
From 1933-1996 (with some gaps), the Soviet Union produced sea ice navigation charts during their summer shipping season. These charts were compiled from aircraft observations and represent a consistent set of observations that is consistent with satellite-derived observations (eg SMMR, SSM/I) over the region from 1979-1996. Thus they represent a self-consistent set of observations. Using seasonal averages of mean Sea Level Pressure, Sea Surface Temperature, and climate indices such as the Arctic Oscillation, a reduced form model is used in order to assess their influence on the variability of September sea ice extent.