Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation
The 17-year (1982-1998) trend in surface temperature shows a general cooling over the Antarctic continent, warming of the sea ice zone, with moderate changes over the oceans. Warming of the peripheral seas is associated with negative trends in the regional sea ice extent. Effects of the Southern Hem...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20020081024 2023-05-15T14:03:46+02:00 Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation Kwok, Ron Comiso, Josefino C. Koblinsky, Chester J. Unclassified, Unlimited, Publicly available [2002] application/pdf http://hdl.handle.net/2060/20020081024 unknown Document ID: 20020081024 http://hdl.handle.net/2060/20020081024 No Copyright CASI Meteorology and Climatology 2002 ftnasantrs 2015-03-15T02:17:55Z The 17-year (1982-1998) trend in surface temperature shows a general cooling over the Antarctic continent, warming of the sea ice zone, with moderate changes over the oceans. Warming of the peripheral seas is associated with negative trends in the regional sea ice extent. Effects of the Southern Hemisphere Annular Mode (SAM) and the extrapolar Southern Oscillation (SO) on surface temperature are quantified through regression analysis. Positive polarities of the SAM are associated with cold anomalies over most of Antarctica, with the most notable exception of the Antarctic Peninsula. Positive temperature anomalies and ice edge retreat in the Pacific sector are associated with El Nino episodes. Over the past two decades, the drift towards high polarity in the SAM and negative polarity in the SO indices couple to produce a spatial pattern with warmer temperatures in the Antarctic Peninsula and peripheral seas, and cooler temperatures over much of East Antarctica. Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Sea ice NASA Technical Reports Server (NTRS) Antarctic Antarctic Peninsula East Antarctica Pacific The Antarctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Kwok, Ron Comiso, Josefino C. Koblinsky, Chester J. Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation |
topic_facet |
Meteorology and Climatology |
description |
The 17-year (1982-1998) trend in surface temperature shows a general cooling over the Antarctic continent, warming of the sea ice zone, with moderate changes over the oceans. Warming of the peripheral seas is associated with negative trends in the regional sea ice extent. Effects of the Southern Hemisphere Annular Mode (SAM) and the extrapolar Southern Oscillation (SO) on surface temperature are quantified through regression analysis. Positive polarities of the SAM are associated with cold anomalies over most of Antarctica, with the most notable exception of the Antarctic Peninsula. Positive temperature anomalies and ice edge retreat in the Pacific sector are associated with El Nino episodes. Over the past two decades, the drift towards high polarity in the SAM and negative polarity in the SO indices couple to produce a spatial pattern with warmer temperatures in the Antarctic Peninsula and peripheral seas, and cooler temperatures over much of East Antarctica. |
author |
Kwok, Ron Comiso, Josefino C. Koblinsky, Chester J. |
author_facet |
Kwok, Ron Comiso, Josefino C. Koblinsky, Chester J. |
author_sort |
Kwok, Ron |
title |
Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation |
title_short |
Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation |
title_full |
Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation |
title_fullStr |
Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation |
title_full_unstemmed |
Spatial Patterns of Variability in Antarctic Surface Temperature: Connections to the Southern Hemisphere Annular Mode and the Southern Oscillation |
title_sort |
spatial patterns of variability in antarctic surface temperature: connections to the southern hemisphere annular mode and the southern oscillation |
publishDate |
2002 |
url |
http://hdl.handle.net/2060/20020081024 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Antarctic Peninsula East Antarctica Pacific The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctica Pacific The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20020081024 http://hdl.handle.net/2060/20020081024 |
op_rights |
No Copyright |
_version_ |
1766274616490196992 |