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Ice core evidence for Antarctic sea ice decline since the 1950s


Curran, MAJ and van Ommen, TD and Morgan, VI and Phillips, KL and Palmer, AS, Ice core evidence for Antarctic sea ice decline since the 1950s, Science, 302, (5648) pp. 1203-1206. ISSN 0036-8075 (2003) [Refereed Article]

Copyright Statement

Copyright 2003 The Authors

DOI: doi:10.1126/science.1087888


The instrumental record of Antarctic sea ice in recent decades does not reveal a clear signature of warming despite observational evidence from coastal Antarctica. Here we report a significant correlation (P<0.002) between methanesulphonic acid (MSA) concentrations from a Law Dome ice core and 22 years of satellite-derived sea ice extent (SIE) for the 80E to 140E sector. Applying this instrumental calibration to longer term MSA data (1841 to 1995 A.D.) suggests that there has been a 20% decline in SIE since about 1950. The decline is not uniform, showing large cyclical variations, with periods of about 11 years, that confuse trend detection over the relatively short satellite era.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Palaeoclimatology
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:Curran, MAJ (Dr Mark Curran)
UTAS Author:van Ommen, TD (Dr Tas van Ommen)
UTAS Author:Morgan, VI (Mr Vincent Morgan)
UTAS Author:Phillips, KL (Ms Katrina Phillips)
UTAS Author:Palmer, AS (Dr Anne Palmer)
ID Code:39292
Year Published:2003
Web of Science® Times Cited:234
Deposited By:IASOS
Deposited On:2006-04-10
Last Modified:2015-11-04

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