Data

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

Australian Antarctic Division
Curran, M. and van Ommen, T. ; CURRAN, MARK ; VAN OMMEN, TAS
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/law_dome_annual_msa&rft.title=150 year MSA sea ice proxy record from Law Dome, Antarctica&rft.identifier=http://data.aad.gov.au/metadata/law_dome_annual_msa&rft.publisher=Australian Antarctic Data Centre&rft.description=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 reveala 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).Progress Code: completed&rft.creator=Curran, M. and van Ommen, T. &rft.creator=CURRAN, MARK &rft.creator=VAN OMMEN, TAS &rft.date=2011&rft.coverage=westlimit=112.806946; southlimit=-66.76972; eastlimit=112.806946; northlimit=-66.76972&rft.coverage=westlimit=112.806946; southlimit=-66.76972; eastlimit=112.806946; northlimit=-66.76972&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=law_dome_annual_msa when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS > IONS&rft_subject=EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS&rft_subject=EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS&rft_subject=methanesulphonic acid&rft_subject=Law Dome&rft_subject=MSA&rft_subject=CORING DEVICES&rft_subject=LABORATORY&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=ACE/CRC&rft_subject=AMD&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License
(http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=law_dome_annual_msa when using these data.

This metadata record is publicly available.

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Full description

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).

Lineage

Progress Code: completed

Data time period: 1841-01-01 to 1995-12-31

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112.80695,-66.76972

112.806946,-66.76972

text: westlimit=112.806946; southlimit=-66.76972; eastlimit=112.806946; northlimit=-66.76972

Subjects
ACE/CRC | AMD | AMD/AU | CEOS | CONTINENT > ANTARCTICA | CORING DEVICES | EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS | EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS | EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS > IONS | GEOGRAPHIC REGION > POLAR | LABORATORY | Law Dome | MSA | climatologyMeteorologyAtmosphere | methanesulphonic acid |

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Other Information
Download point for the data (GET DATA)

uri : https://data.aad.gov.au/eds/3008/download

Public information for ASAC project 757 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/search_projects_results.cfm?project_no=757

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

uri : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=law_dome_annual_msa

Identifiers
  • global : law_dome_annual_msa