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The Law Dome MSA sea ice proxy record: analysis of modern satellite data and re-examination of archival satellite imagery

Citation

Curran, MA and van Ommen, TD and Stroeve, J and Vance, TR and Moy, AD and Roberts, J and Lieser, J and Poynter, S and Plummer, C and Gallaher, D and Campbell, G and Hobbs, W, The Law Dome MSA sea ice proxy record: analysis of modern satellite data and re-examination of archival satellite imagery, IPICS 2016 Book of Abstracts, 07-11 March 2016, Hobart, Tasmania, pp. submission ID 256. (2016) [Conference Extract]


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Abstract

Understanding the long term trends in sea ice coverage is important, particularly in the context of recent reports of increases in Antarctic sea ice extent. Prior to the satellite era, ice core records have been used as a proxy for past sea ice extent in Antarctica, allowing investigations of the natural variability of Antarctic sea ice extent. The Law Dome MSA sea ice proxy has been recognised as an important tool for reconstructing sea ice, however not without itís limitations. Here, we present an updated record for the Methanesulphonic acid (MSA) data from the Law Dome site (to 2013) and investigate the recent changes in Antarctic sea ice extent. We also extend the proxy calibration period further back in time by including reanalysis of old Nimbus I satellite information from the mid 1960s to the mid 1970s. Our data suggests that recent reports of increases in Antarctic sea ice extent remain within natural variability, a result consistent with attribution and detection studies for this region.

Item Details

Item Type:Conference Extract
Keywords:MSA sea ice proxy, Law Dome record
Research Division:Earth Sciences
Research Group:Physical Geography and Environmental Geoscience
Research Field:Physical Geography and Environmental Geoscience not elsewhere classified
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Effects of Climate Change and Variability on Antarctic and Sub-Antarctic Environments (excl. Social Impacts)
Author:Curran, MA (Dr Mark Curran)
Author:van Ommen, TD (Dr Tas van Ommen)
Author:Vance, TR (Dr Tessa Vance)
Author:Moy, AD (Dr Andrew Moy)
Author:Roberts, J (Dr Jason Roberts)
Author:Lieser, J (Dr Jan Lieser)
Author:Poynter, S (Mr Sam Poynter)
Author:Plummer, C (Mr Christopher Plummer)
Author:Hobbs, W (Dr Will Hobbs)
ID Code:110164
Year Published:2016
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2016-07-18
Last Modified:2016-07-18
Downloads:0

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