University of Cambridge > Talks.cam > British Antarctic Survey > Recent Changes in Antarctic Sea Ice

Recent Changes in Antarctic Sea Ice

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Dr. Pranab Deb.

If you are external to BAS, please email the seminar organiser to arrange access

Since 1979 Antarctic sea ice extent has increased throughout the year, with the total Antarctic annual mean extent having increased at a rate of 1.5% per decade. However, this overall increase masks large regional variations and especially an increase (decrease) over the Ross (Amundsen-Bellingshausen) Sea. The mechanism or mechanisms responsible for the increase in Antarctic SIE are not fully understood, but the loss of stratospheric ozone, freshwater injection from the ice sheet, ocean-ice feedback processes and ocean change have all been put forward as possibly playing a part. But the observed ice increase is dominated by change in the Ross Sea where the ice extent is significantly correlated with the state of the Amundsen Sea Low, which has deepened in recent decades. However, the atmospheric circulation changes and sea ice increase may be within the bounds of internal variability of the climate system.

This talk is part of the British Antarctic Survey series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2020 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity