Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica
Here we discuss the cause and effect of opposing atmospheric and oceanic ENSO forcings in the Ross Sea, that lead to a net warming in the eastern Ross Sea and a net cooling in the western Ross Sea during El Niño years. During La Niña years the opposite is observed. The oceanic ENSO effect causes a ~...
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ftdoajarticles:oai:doaj.org/article:92f3e773f6144ae69ced58ffa235062f 2023-05-15T13:24:02+02:00 Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica N. A. N. Bertler T. R. Naish P. A. Mayewski P. J. Barrett 2006-01-01T00:00:00Z https://doaj.org/article/92f3e773f6144ae69ced58ffa235062f EN eng Copernicus Publications http://www.adv-geosci.net/6/83/2006/adgeo-6-83-2006.pdf https://doaj.org/toc/1680-7340 https://doaj.org/toc/1680-7359 1680-7340 1680-7359 https://doaj.org/article/92f3e773f6144ae69ced58ffa235062f Advances in Geosciences, Vol 6, Pp 83-86 (2006) Science Q Geology QE1-996.5 Dynamic and structural geology QE500-639.5 article 2006 ftdoajarticles 2022-12-31T01:37:29Z Here we discuss the cause and effect of opposing atmospheric and oceanic ENSO forcings in the Ross Sea, that lead to a net warming in the eastern Ross Sea and a net cooling in the western Ross Sea during El Niño years. During La Niña years the opposite is observed. The oceanic ENSO effect causes a ~1 K warming with a 3 month lag during El Niño years in comparison to La Niña time periods. During El Niño events, the atmospheric ENSO effect leads to a shift and weakening of the Amundsen Sea Low, causing enhanced import of colder West Antarctic air masses into the western Ross Sea. We find that this indirect ENSO effect is about one order of magnitude stronger (up to 15 K) in the western Ross Sea than the direct effect (~1 K), leading to a net cooling during El Niño and net warming during La Niña events. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Ross Sea Directory of Open Access Journals: DOAJ Articles Antarctic Ross Sea Amundsen Sea |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Geology QE1-996.5 Dynamic and structural geology QE500-639.5 |
spellingShingle |
Science Q Geology QE1-996.5 Dynamic and structural geology QE500-639.5 N. A. N. Bertler T. R. Naish P. A. Mayewski P. J. Barrett Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica |
topic_facet |
Science Q Geology QE1-996.5 Dynamic and structural geology QE500-639.5 |
description |
Here we discuss the cause and effect of opposing atmospheric and oceanic ENSO forcings in the Ross Sea, that lead to a net warming in the eastern Ross Sea and a net cooling in the western Ross Sea during El Niño years. During La Niña years the opposite is observed. The oceanic ENSO effect causes a ~1 K warming with a 3 month lag during El Niño years in comparison to La Niña time periods. During El Niño events, the atmospheric ENSO effect leads to a shift and weakening of the Amundsen Sea Low, causing enhanced import of colder West Antarctic air masses into the western Ross Sea. We find that this indirect ENSO effect is about one order of magnitude stronger (up to 15 K) in the western Ross Sea than the direct effect (~1 K), leading to a net cooling during El Niño and net warming during La Niña events. |
format |
Article in Journal/Newspaper |
author |
N. A. N. Bertler T. R. Naish P. A. Mayewski P. J. Barrett |
author_facet |
N. A. N. Bertler T. R. Naish P. A. Mayewski P. J. Barrett |
author_sort |
N. A. N. Bertler |
title |
Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica |
title_short |
Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica |
title_full |
Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica |
title_fullStr |
Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica |
title_full_unstemmed |
Opposing oceanic and atmospheric ENSO influences on the Ross Sea Region, Antarctica |
title_sort |
opposing oceanic and atmospheric enso influences on the ross sea region, antarctica |
publisher |
Copernicus Publications |
publishDate |
2006 |
url |
https://doaj.org/article/92f3e773f6144ae69ced58ffa235062f |
geographic |
Antarctic Ross Sea Amundsen Sea |
geographic_facet |
Antarctic Ross Sea Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ross Sea |
op_source |
Advances in Geosciences, Vol 6, Pp 83-86 (2006) |
op_relation |
http://www.adv-geosci.net/6/83/2006/adgeo-6-83-2006.pdf https://doaj.org/toc/1680-7340 https://doaj.org/toc/1680-7359 1680-7340 1680-7359 https://doaj.org/article/92f3e773f6144ae69ced58ffa235062f |
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1766377081231376384 |