150 year MSA sea ice proxy record from Law Dome, Antarctica

This MSA record (1841-1995) is from a Law Dome ice core called "DSS" in East Antarctica. It was calibrated against satellite sea ice records and used to reconstruct sea ice extent prior to the satellite era. The following is taken from the abstract of the paper (Curran et al., 2003). The i...

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Bibliographic Details
Other Authors: CURRAN, MARK (hasPrincipalInvestigator), CURRAN, MARK (processor), VAN OMMEN, TAS (hasPrincipalInvestigator), VAN OMMEN, TAS (processor), Australian Antarctic Data Centre (publisher)
Format: Dataset
Language:unknown
Published: Australian Antarctic Data Centre
Subjects:
climatologyMeteorologyAtmosphere
IONS
EARTH SCIENCE
PALEOCLIMATE
ICE CORE RECORDS
SULFUR COMPOUNDS
ATMOSPHERE
ATMOSPHERIC CHEMISTRY
methanesulphonic acid
Law Dome
MSA
CORING DEVICES
LABORATORY
CONTINENT &gt
ANTARCTICA
GEOGRAPHIC REGION &gt
POLAR
Antarctic
East Antarctica
Antarc*
Antarctica
ice core
Sea ice
Online Access:https://researchdata.ands.org.au/150-year-msa-dome-antarctica/701250
https://doi.org/10.26179/5bf4b43fd4f45
https://data.aad.gov.au/metadata/records/law_dome_annual_msa
http://nla.gov.au/nla.party-617536
Description
Summary:This MSA record (1841-1995) is from a Law Dome ice core called "DSS" in East Antarctica. It was calibrated against satellite sea ice records and used to reconstruct sea ice extent prior to the satellite era. The following is taken from the abstract of the paper (Curran et al., 2003). The instrumental record of Antarctic sea ice in recent decades does not reveal a clear signature of warming despite observational evidence from coastal Antarctica. This work shows a significant correlation (P less than 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 80 degrees E to 140 degrees E 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. This work was completed as part of ASAC project 757 (ASAC_757).

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