340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core
(DI), located off the east coast of the Antarctic Peninsula, are investigated using reanalysis and back trajectory data. The Southern Annular Mode (SAM) and ENSO are both shown to influence precipitation delivery and event size. Precipitation delivery variability is compared against the interannual...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.425.982 2023-05-15T13:51:18+02:00 340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core A. Russell G. R. Mcgregor G. J. Marshall The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.425.982 http://bura.brunel.ac.uk/bitstream/2438/5962/2/GRL_2006.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.425.982 http://bura.brunel.ac.uk/bitstream/2438/5962/2/GRL_2006.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://bura.brunel.ac.uk/bitstream/2438/5962/2/GRL_2006.pdf L08702 doi 10.1029/2006GL025899 text ftciteseerx 2016-01-08T04:18:57Z (DI), located off the east coast of the Antarctic Peninsula, are investigated using reanalysis and back trajectory data. The Southern Annular Mode (SAM) and ENSO are both shown to influence precipitation delivery and event size. Precipitation delivery variability is compared against the interannual variation of chemical data from two DI ice cores. Nitrate concentration in the cores is strongly linked with the ratio of easterly to westerly back trajectories arriving at DI, as described by a Cross-Peninsula Index (CPI) defined in this paper. This CPI is used subsequently to reconstruct the atmospheric circulation characteristics for the 340-year ice core record. The analysis highlights a period of increased easterlies during 1720–1780 and an increase in westerlies for 1950–1980, the latter concomitant with a positive SAM trend and western Peninsula warming. The reconstruction also reveals periods when polynyas may Text Antarc* Antarctic Antarctic Peninsula ice core Unknown Antarctic Antarctic Peninsula The Antarctic |
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ftciteseerx |
language |
English |
topic |
L08702 doi 10.1029/2006GL025899 |
spellingShingle |
L08702 doi 10.1029/2006GL025899 A. Russell G. R. Mcgregor G. J. Marshall 340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core |
topic_facet |
L08702 doi 10.1029/2006GL025899 |
description |
(DI), located off the east coast of the Antarctic Peninsula, are investigated using reanalysis and back trajectory data. The Southern Annular Mode (SAM) and ENSO are both shown to influence precipitation delivery and event size. Precipitation delivery variability is compared against the interannual variation of chemical data from two DI ice cores. Nitrate concentration in the cores is strongly linked with the ratio of easterly to westerly back trajectories arriving at DI, as described by a Cross-Peninsula Index (CPI) defined in this paper. This CPI is used subsequently to reconstruct the atmospheric circulation characteristics for the 340-year ice core record. The analysis highlights a period of increased easterlies during 1720–1780 and an increase in westerlies for 1950–1980, the latter concomitant with a positive SAM trend and western Peninsula warming. The reconstruction also reveals periods when polynyas may |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
A. Russell G. R. Mcgregor G. J. Marshall |
author_facet |
A. Russell G. R. Mcgregor G. J. Marshall |
author_sort |
A. Russell |
title |
340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core |
title_short |
340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core |
title_full |
340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core |
title_fullStr |
340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core |
title_full_unstemmed |
340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core |
title_sort |
340 years of atmospheric circulation characteristics reconstructed from an eastern antarctic peninsula ice core |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.425.982 http://bura.brunel.ac.uk/bitstream/2438/5962/2/GRL_2006.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula ice core |
genre_facet |
Antarc* Antarctic Antarctic Peninsula ice core |
op_source |
http://bura.brunel.ac.uk/bitstream/2438/5962/2/GRL_2006.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.425.982 http://bura.brunel.ac.uk/bitstream/2438/5962/2/GRL_2006.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766255104164364288 |