Tropical and mid-latitude forcing of continental Antarctic temperatures
Future changes in atmospheric circulation and associated modes of variability are a major source of uncertainty in climate projections. Nowhere is this issue more acute than across the mid-latitudes to high latitudes of the Southern Hemisphere (SH), which over the last few decades have experienced e...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00014377 2023-05-15T13:41:02+02:00 Tropical and mid-latitude forcing of continental Antarctic temperatures Turney, C. S. M. Fogwill, C. J. Klekociuk, A. R. van Ommen, T. D. Curran, M. A. J. Moy, A. D. Palmer, J. G. 2015-12 electronic https://doi.org/10.5194/tc-9-2405-2015 https://noa.gwlb.de/receive/cop_mods_00014377 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014332/tc-9-2405-2015.pdf https://tc.copernicus.org/articles/9/2405/2015/tc-9-2405-2015.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-2405-2015 https://noa.gwlb.de/receive/cop_mods_00014377 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014332/tc-9-2405-2015.pdf https://tc.copernicus.org/articles/9/2405/2015/tc-9-2405-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/tc-9-2405-2015 2022-02-08T22:55:10Z Future changes in atmospheric circulation and associated modes of variability are a major source of uncertainty in climate projections. Nowhere is this issue more acute than across the mid-latitudes to high latitudes of the Southern Hemisphere (SH), which over the last few decades have experienced extreme and regionally variable trends in precipitation, ocean circulation and temperature, with major implications for Antarctic ice melt and surface mass balance. Unfortunately there is a relative dearth of observational data, limiting our understanding of the driving mechanism(s). Here we report a new 130-year annually resolved record of δD – a proxy for temperature – from the geographic South Pole where we find a significant influence from extratropical pressure anomalies which act as "gatekeepers" to the meridional exchange of air masses. Reanalysis of global atmospheric circulation suggests these pressure anomalies play a significant influence on mid- to high-latitude SH climate, modulated by the tropical Pacific Ocean. This work adds to a growing body of literature confirming the important roles of tropical and mid-latitude atmospheric circulation variability on Antarctic temperatures. Our findings suggest that future increasing tropical warmth will strengthen meridional circulation, exaggerating current trends, with potentially significant impacts on Antarctic surface mass balance. Article in Journal/Newspaper Antarc* Antarctic South pole South pole The Cryosphere Niedersächsisches Online-Archiv NOA Antarctic Pacific South Pole The Cryosphere 9 6 2405 2415 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Turney, C. S. M. Fogwill, C. J. Klekociuk, A. R. van Ommen, T. D. Curran, M. A. J. Moy, A. D. Palmer, J. G. Tropical and mid-latitude forcing of continental Antarctic temperatures |
topic_facet |
article Verlagsveröffentlichung |
description |
Future changes in atmospheric circulation and associated modes of variability are a major source of uncertainty in climate projections. Nowhere is this issue more acute than across the mid-latitudes to high latitudes of the Southern Hemisphere (SH), which over the last few decades have experienced extreme and regionally variable trends in precipitation, ocean circulation and temperature, with major implications for Antarctic ice melt and surface mass balance. Unfortunately there is a relative dearth of observational data, limiting our understanding of the driving mechanism(s). Here we report a new 130-year annually resolved record of δD – a proxy for temperature – from the geographic South Pole where we find a significant influence from extratropical pressure anomalies which act as "gatekeepers" to the meridional exchange of air masses. Reanalysis of global atmospheric circulation suggests these pressure anomalies play a significant influence on mid- to high-latitude SH climate, modulated by the tropical Pacific Ocean. This work adds to a growing body of literature confirming the important roles of tropical and mid-latitude atmospheric circulation variability on Antarctic temperatures. Our findings suggest that future increasing tropical warmth will strengthen meridional circulation, exaggerating current trends, with potentially significant impacts on Antarctic surface mass balance. |
format |
Article in Journal/Newspaper |
author |
Turney, C. S. M. Fogwill, C. J. Klekociuk, A. R. van Ommen, T. D. Curran, M. A. J. Moy, A. D. Palmer, J. G. |
author_facet |
Turney, C. S. M. Fogwill, C. J. Klekociuk, A. R. van Ommen, T. D. Curran, M. A. J. Moy, A. D. Palmer, J. G. |
author_sort |
Turney, C. S. M. |
title |
Tropical and mid-latitude forcing of continental Antarctic temperatures |
title_short |
Tropical and mid-latitude forcing of continental Antarctic temperatures |
title_full |
Tropical and mid-latitude forcing of continental Antarctic temperatures |
title_fullStr |
Tropical and mid-latitude forcing of continental Antarctic temperatures |
title_full_unstemmed |
Tropical and mid-latitude forcing of continental Antarctic temperatures |
title_sort |
tropical and mid-latitude forcing of continental antarctic temperatures |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-2405-2015 https://noa.gwlb.de/receive/cop_mods_00014377 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014332/tc-9-2405-2015.pdf https://tc.copernicus.org/articles/9/2405/2015/tc-9-2405-2015.pdf |
geographic |
Antarctic Pacific South Pole |
geographic_facet |
Antarctic Pacific South Pole |
genre |
Antarc* Antarctic South pole South pole The Cryosphere |
genre_facet |
Antarc* Antarctic South pole South pole The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-2405-2015 https://noa.gwlb.de/receive/cop_mods_00014377 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00014332/tc-9-2405-2015.pdf https://tc.copernicus.org/articles/9/2405/2015/tc-9-2405-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-2405-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
6 |
container_start_page |
2405 |
op_container_end_page |
2415 |
_version_ |
1766145057421787136 |