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The record 2013 Southern Hemisphere sea-ice extent maximum


Reid, P and Stammerjohn, S and Massom, R and Scambos, T and Lieser, J, The record 2013 Southern Hemisphere sea-ice extent maximum, Annals of Glaciology, 56, (69) pp. 99-106. ISSN 0260-3055 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 International Glaciol Society

DOI: doi:10.3189/2015AoG69A892


Observations of Southern Hemisphere sea ice from passive microwave satellite measurements show that a new record maximum extent of 19.58 106 km2 was reached on 30 September 2013; the extent is just over two standard deviations above the 19792012 mean and follows a similar record (19.48 106 km2) in 2012. On the record day in 2013, sea-ice extent was greater than the 30 year average (19812010) in nearly all Southern Ocean regions. For the year as a whole, Southern Hemisphere sea-ice area and extent were well above average, and numerous monthly and daily records were broken. Analysis of anomaly patterns and the atmospheric and oceanic events suggests that a sequence of regional wind and cold-freshened surface waters is likely responsible for the record maximum and the generally high 2013 extent. In particular, the Ross Sea sector experienced a combination of cold southerly winds associated with the position and depth of the Amundsen Sea low, and lower than normal sea surface temperatures (up to 2C below normal). The resulting very high anomaly in ice extent in this region was a major component of the overall record maximum.

Item Details

Item Type:Refereed Article
Keywords:atmosphere/ice/ocean interactions, climate change, sea ice
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Glaciology
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Antarctic and Southern Ocean oceanic processes
UTAS Author:Reid, P (Dr Phillip Reid)
UTAS Author:Massom, R (Dr Robert Massom)
UTAS Author:Lieser, J (Dr Jan Lieser)
ID Code:98031
Year Published:2015
Web of Science® Times Cited:19
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2015-01-29
Last Modified:2017-10-30

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