Interpretation of recent Antarctic sea ice variability

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Year of Publication: 
2004
Editor: 
Journal Title: 
Geophysical Research Letters
Journal Date: 
Jan 22
Place Published: 
Tertiary Title: 
Volume: 
31
Issue: 
2
Pages: 
-
Section / Start page: 
Publisher: 
ISBN Number: 
0094-8276
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:000188671500001
LDEO Publication Number: 
Call Number: 
Abstract: 

Trends in the satellite-derived Antarctic sea ice concentrations (1979-2002) show pronounced increase (decrease) in the central Pacific sector (Bellingshausen/western Weddell sector) by similar to4-10% per decade. Confidence levels for these regional trends exceed 95%. Positive polarities of the Antarctic Oscillation (AAO) lead to more (less) ice in the eastern Ross/Amundsen sector (Bellingshausen/northern Weddell sector), which are qualitatively opposite to the impacts of positive polarities of the El Nino-Southern Oscillation (ENSO). The mechanisms responsible for the covariability between the ice and the (a) AAO and (b) ENSO are demonstrated. Over the last 24 years, a positive AAO trend and a slightly negative ENSO trend produce a spatial pattern of ice changes similar to the regional ice trends. However, the magnitude of the ice changes associated with the AAO and ENSO is much smaller than the regional ice trends. More local (or less understood large) scale processes should be investigated for the explanations.

Notes: 

769VYTimes Cited:26Cited References Count:18

DOI: 
Doi 10.1029/2003gl018732