Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis
Analysis of ERA40 temperature and accumulation data suggests that annual mean isotopic fluctuations due to temperature change will be geographically very variable across the Peninsula: isotopic variations of 0.4 parts per thousand at James Ross Island; 0.9 parts per thousand at Dyer; and 1.3 parts p...
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American Geophysical Union
2009
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ftnerc:oai:nora.nerc.ac.uk:11277 2023-05-15T13:45:10+02:00 Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis Sime, Louise C. Marshall, Gareth J. Mulvaney, Robert Thomas, Elizabeth R. 2009 text http://nora.nerc.ac.uk/id/eprint/11277/ https://nora.nerc.ac.uk/id/eprint/11277/1/2009GL038982.pdf http://www.agu.org/journals/gl/gl0918/2009GL038982/2009GL038982.pdf en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/11277/1/2009GL038982.pdf Sime, Louise C. orcid:0000-0002-9093-7926 Marshall, Gareth J. orcid:0000-0001-8887-7314 Mulvaney, Robert orcid:0000-0002-5372-8148 Thomas, Elizabeth R. orcid:0000-0002-3010-6493 . 2009 Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis. Geophysical Research Letters, 36 (18), L18801. 5, pp. https://doi.org/10.1029/2009GL038982 <https://doi.org/10.1029/2009GL038982> Meteorology and Climatology Glaciology Earth Sciences Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.1029/2009GL038982 2023-02-04T19:27:17Z Analysis of ERA40 temperature and accumulation data suggests that annual mean isotopic fluctuations due to temperature change will be geographically very variable across the Peninsula: isotopic variations of 0.4 parts per thousand at James Ross Island; 0.9 parts per thousand at Dyer; and 1.3 parts per thousand at Gomez are all likely to indicate an identical magnitude of temperature change. The reduction in the magnitude of the isotopic signal in the north and east is due to climatically dependent synoptic covariance between temperature and accumulation; whilst in the west and south seasonal covariance amplifies the isotopic temperature signal. Additionally we show that the relationship between accumulation and temperature is rather weak in the north-east regions but is stronger in the central and southerly regions. Therefore isotopes may record 11% to 30% of the variance in annual mean temperatures in the north east; 75% in central regions; and 70% in the south. This study enables physically based reconstructions of Peninsula climate based on multi-core analysis. Citation: Sime, L. C., G. J. Marshall, R. Mulvaney, and E. R. Thomas ( 2009), Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis, Geophys. Res. Lett., 36, L18801, doi:10.1029/2009GL038982. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Ross Island Dyer ENVELOPE(-81.366,-81.366,50.550,50.550) Gomez ENVELOPE(-58.795,-58.795,-62.196,-62.196) Geophysical Research Letters 36 18 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Meteorology and Climatology Glaciology Earth Sciences |
spellingShingle |
Meteorology and Climatology Glaciology Earth Sciences Sime, Louise C. Marshall, Gareth J. Mulvaney, Robert Thomas, Elizabeth R. Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis |
topic_facet |
Meteorology and Climatology Glaciology Earth Sciences |
description |
Analysis of ERA40 temperature and accumulation data suggests that annual mean isotopic fluctuations due to temperature change will be geographically very variable across the Peninsula: isotopic variations of 0.4 parts per thousand at James Ross Island; 0.9 parts per thousand at Dyer; and 1.3 parts per thousand at Gomez are all likely to indicate an identical magnitude of temperature change. The reduction in the magnitude of the isotopic signal in the north and east is due to climatically dependent synoptic covariance between temperature and accumulation; whilst in the west and south seasonal covariance amplifies the isotopic temperature signal. Additionally we show that the relationship between accumulation and temperature is rather weak in the north-east regions but is stronger in the central and southerly regions. Therefore isotopes may record 11% to 30% of the variance in annual mean temperatures in the north east; 75% in central regions; and 70% in the south. This study enables physically based reconstructions of Peninsula climate based on multi-core analysis. Citation: Sime, L. C., G. J. Marshall, R. Mulvaney, and E. R. Thomas ( 2009), Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis, Geophys. Res. Lett., 36, L18801, doi:10.1029/2009GL038982. |
format |
Article in Journal/Newspaper |
author |
Sime, Louise C. Marshall, Gareth J. Mulvaney, Robert Thomas, Elizabeth R. |
author_facet |
Sime, Louise C. Marshall, Gareth J. Mulvaney, Robert Thomas, Elizabeth R. |
author_sort |
Sime, Louise C. |
title |
Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis |
title_short |
Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis |
title_full |
Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis |
title_fullStr |
Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis |
title_full_unstemmed |
Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis |
title_sort |
interpreting temperature information from ice cores along the antarctic peninsula: era40 analysis |
publisher |
American Geophysical Union |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/11277/ https://nora.nerc.ac.uk/id/eprint/11277/1/2009GL038982.pdf http://www.agu.org/journals/gl/gl0918/2009GL038982/2009GL038982.pdf |
long_lat |
ENVELOPE(-81.366,-81.366,50.550,50.550) ENVELOPE(-58.795,-58.795,-62.196,-62.196) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Ross Island Dyer Gomez |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Ross Island Dyer Gomez |
genre |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula James Ross Island Ross Island |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11277/1/2009GL038982.pdf Sime, Louise C. orcid:0000-0002-9093-7926 Marshall, Gareth J. orcid:0000-0001-8887-7314 Mulvaney, Robert orcid:0000-0002-5372-8148 Thomas, Elizabeth R. orcid:0000-0002-3010-6493 . 2009 Interpreting temperature information from ice cores along the Antarctic Peninsula: ERA40 analysis. Geophysical Research Letters, 36 (18), L18801. 5, pp. https://doi.org/10.1029/2009GL038982 <https://doi.org/10.1029/2009GL038982> |
op_doi |
https://doi.org/10.1029/2009GL038982 |
container_title |
Geophysical Research Letters |
container_volume |
36 |
container_issue |
18 |
_version_ |
1766214460571123712 |