Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula
In this study we correlate temporal features within the electrical conductivity (acidity) traces of four shallow firn cores obtained from the southern Antarctic Peninsula to synoptic-scale variations in the regional climate, as depicted by a numerical weather prediction model. It is demonstrated tha...
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ftnerc:oai:nora.nerc.ac.uk:504189 2023-05-15T13:29:40+02:00 Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula Marshall, Gareth J. Turner, John Miners, William D. 1998 http://nora.nerc.ac.uk/id/eprint/504189/ unknown International Glaciological Society Marshall, Gareth J. orcid:0000-0001-8887-7314 Turner, John orcid:0000-0002-6111-5122 Miners, William D. 1998 Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula. Annals of Glaciology, 27. 610-616. Publication - Article PeerReviewed 1998 ftnerc 2023-02-04T19:38:19Z In this study we correlate temporal features within the electrical conductivity (acidity) traces of four shallow firn cores obtained from the southern Antarctic Peninsula to synoptic-scale variations in the regional climate, as depicted by a numerical weather prediction model. It is demonstrated that the three high-acidity features present within the 1992-93 accumulation correspond to periods of significant precipitation, a hypothesis supported by the association of these events with strong onshore winds, ideal for transporting the biogenically derived sources of precipitation acidity to the core sites. The longitudinal location of depressions within the Bellingshausen Sea is shown to be the principal factor governing the volume of precipitation that they give over the western Peninsula. Annual accumulation in the model is ,,-,25 % lower than revealed by the cores; although there are too many uncertainties to provide a definite reason for the deviation, the smoothed model orography and inaccurate land-sea mask are believed to be significant factors. It is postulated that the acidity pattern within southern Peninsula cores may reveal an El Nino-Southern Oscillation signal. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Bellingshausen Sea |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
In this study we correlate temporal features within the electrical conductivity (acidity) traces of four shallow firn cores obtained from the southern Antarctic Peninsula to synoptic-scale variations in the regional climate, as depicted by a numerical weather prediction model. It is demonstrated that the three high-acidity features present within the 1992-93 accumulation correspond to periods of significant precipitation, a hypothesis supported by the association of these events with strong onshore winds, ideal for transporting the biogenically derived sources of precipitation acidity to the core sites. The longitudinal location of depressions within the Bellingshausen Sea is shown to be the principal factor governing the volume of precipitation that they give over the western Peninsula. Annual accumulation in the model is ,,-,25 % lower than revealed by the cores; although there are too many uncertainties to provide a definite reason for the deviation, the smoothed model orography and inaccurate land-sea mask are believed to be significant factors. It is postulated that the acidity pattern within southern Peninsula cores may reveal an El Nino-Southern Oscillation signal. |
format |
Article in Journal/Newspaper |
author |
Marshall, Gareth J. Turner, John Miners, William D. |
spellingShingle |
Marshall, Gareth J. Turner, John Miners, William D. Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula |
author_facet |
Marshall, Gareth J. Turner, John Miners, William D. |
author_sort |
Marshall, Gareth J. |
title |
Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula |
title_short |
Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula |
title_full |
Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula |
title_fullStr |
Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula |
title_full_unstemmed |
Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula |
title_sort |
interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern antarctic peninsula |
publisher |
International Glaciological Society |
publishDate |
1998 |
url |
http://nora.nerc.ac.uk/id/eprint/504189/ |
geographic |
Antarctic Antarctic Peninsula Bellingshausen Sea |
geographic_facet |
Antarctic Antarctic Peninsula Bellingshausen Sea |
genre |
Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Bellingshausen Sea |
op_relation |
Marshall, Gareth J. orcid:0000-0001-8887-7314 Turner, John orcid:0000-0002-6111-5122 Miners, William D. 1998 Interpreting recent accumulation records through an understanding of the regional synoptic climatology: an example from the southern Antarctic Peninsula. Annals of Glaciology, 27. 610-616. |
_version_ |
1766001860887445504 |