Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves
Mapping surface air temperature in the Antarctic Peninsula region is made unusually difficult by: the scarcity of meteorological stations, strong climatic gradients and recent rapid regional warming. We have compiled a database of 534 mean annual temperatures derived from measurements of snow temper...
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American Geophysical Union
2003
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ftnerc:oai:nora.nerc.ac.uk:12803 2023-05-15T13:45:11+02:00 Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves Morris, Elizabeth M. Vaughan, David G. 2003 http://nora.nerc.ac.uk/id/eprint/12803/ unknown American Geophysical Union Morris, Elizabeth M.; Vaughan, David G. orcid:0000-0002-9065-0570 . 2003 Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves. Antarctic Research Series, 79. 61-68. https://doi.org/10.1029/AR079p0061 <https://doi.org/10.1029/AR079p0061> Meteorology and Climatology Glaciology Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.1029/AR079p0061 2023-02-04T19:28:13Z Mapping surface air temperature in the Antarctic Peninsula region is made unusually difficult by: the scarcity of meteorological stations, strong climatic gradients and recent rapid regional warming. We have compiled a database of 534 mean annual temperatures derived from measurements of snow temperature at around 10-m depth and air temperature measured at meteorological stations and automatic weather stations. These annual temperatures were corrected for interannual variability using a composite record from six stations across the region. The corrected temperatures were then analysed using multiple linear regression to yield altitudinal and temporal lapse rates. A subset of 508 values were then used to produce a map of temperature reduced to sea level and for a specific epoch (2000 A.D.). The map shows the dramatic climate contrast (3-5degreesC) between the east and west coast of the Antarctic Peninsula in greater detail than earlier studies and also indicates that the present limit of ice shelves closely follows the -9degreesC (2000 A.D.) isotherm. Furthermore, the limit of ice shelves known to have retreated during the last 100 years is bounded by the -9degreesC and -5degreesC (2000 A.D.) isotherms, suggesting that the retreat of ice shelves in the Antarctic Peninsula region is consistent with a warming of around similar to 4 degrees C. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Shelves Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula The Antarctic 61 68 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Meteorology and Climatology Glaciology |
spellingShingle |
Meteorology and Climatology Glaciology Morris, Elizabeth M. Vaughan, David G. Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves |
topic_facet |
Meteorology and Climatology Glaciology |
description |
Mapping surface air temperature in the Antarctic Peninsula region is made unusually difficult by: the scarcity of meteorological stations, strong climatic gradients and recent rapid regional warming. We have compiled a database of 534 mean annual temperatures derived from measurements of snow temperature at around 10-m depth and air temperature measured at meteorological stations and automatic weather stations. These annual temperatures were corrected for interannual variability using a composite record from six stations across the region. The corrected temperatures were then analysed using multiple linear regression to yield altitudinal and temporal lapse rates. A subset of 508 values were then used to produce a map of temperature reduced to sea level and for a specific epoch (2000 A.D.). The map shows the dramatic climate contrast (3-5degreesC) between the east and west coast of the Antarctic Peninsula in greater detail than earlier studies and also indicates that the present limit of ice shelves closely follows the -9degreesC (2000 A.D.) isotherm. Furthermore, the limit of ice shelves known to have retreated during the last 100 years is bounded by the -9degreesC and -5degreesC (2000 A.D.) isotherms, suggesting that the retreat of ice shelves in the Antarctic Peninsula region is consistent with a warming of around similar to 4 degrees C. |
format |
Article in Journal/Newspaper |
author |
Morris, Elizabeth M. Vaughan, David G. |
author_facet |
Morris, Elizabeth M. Vaughan, David G. |
author_sort |
Morris, Elizabeth M. |
title |
Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves |
title_short |
Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves |
title_full |
Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves |
title_fullStr |
Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves |
title_full_unstemmed |
Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves |
title_sort |
spatial and temporal variation of surface temperature on the antarctic peninsula and the limit of viability of ice shelves |
publisher |
American Geophysical Union |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/12803/ |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Shelves |
op_relation |
Morris, Elizabeth M.; Vaughan, David G. orcid:0000-0002-9065-0570 . 2003 Spatial and temporal variation of surface temperature on the Antarctic Peninsula and the limit of viability of ice shelves. Antarctic Research Series, 79. 61-68. https://doi.org/10.1029/AR079p0061 <https://doi.org/10.1029/AR079p0061> |
op_doi |
https://doi.org/10.1029/AR079p0061 |
container_start_page |
61 |
op_container_end_page |
68 |
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1766215258172555264 |