The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation
We provide the first comprehensive analysis of the relationships between large-scale patterns of Southern Hemisphere climate variability and the detailed structure of Antarctic precipitation. We examine linkages between the high spatial resolution precipitation from a regional atmospheric model and...
Main Authors: | , , |
---|---|
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://dspace.library.uu.nl/handle/1874/428286 |
id |
ftunivutrecht:oai:dspace.library.uu.nl:1874/428286 |
---|---|
record_format |
openpolar |
spelling |
ftunivutrecht:oai:dspace.library.uu.nl:1874/428286 2023-11-12T04:04:48+01:00 The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation Marshall, Gareth J. Thompson, David W.J. van den Broeke, Michiel R. Sub Dynamics Meteorology Marine and Atmospheric Research 2017-11-28 application/pdf https://dspace.library.uu.nl/handle/1874/428286 en eng 0094-8276 https://dspace.library.uu.nl/handle/1874/428286 info:eu-repo/semantics/OpenAccess Antarctica circulation climate mass balance precipitation Geophysics Earth and Planetary Sciences(all) Article 2017 ftunivutrecht 2023-11-01T23:30:24Z We provide the first comprehensive analysis of the relationships between large-scale patterns of Southern Hemisphere climate variability and the detailed structure of Antarctic precipitation. We examine linkages between the high spatial resolution precipitation from a regional atmospheric model and four patterns of large-scale Southern Hemisphere climate variability: the southern baroclinic annular mode, the southern annular mode, and the two Pacific-South American teleconnection patterns. Variations in all four patterns influence the spatial configuration of precipitation over Antarctica, consistent with their signatures in high-latitude meridional moisture fluxes. They impact not only the mean but also the incidence of extreme precipitation events. Current coupled-climate models are able to reproduce all four patterns of atmospheric variability but struggle to correctly replicate their regional impacts on Antarctic climate. Thus, linking these patterns directly to Antarctic precipitation variability may allow a better estimate of future changes in precipitation than using model output alone. Article in Journal/Newspaper Antarc* Antarctic Antarctica Utrecht University Repository Antarctic Pacific |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Antarctica circulation climate mass balance precipitation Geophysics Earth and Planetary Sciences(all) |
spellingShingle |
Antarctica circulation climate mass balance precipitation Geophysics Earth and Planetary Sciences(all) Marshall, Gareth J. Thompson, David W.J. van den Broeke, Michiel R. The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation |
topic_facet |
Antarctica circulation climate mass balance precipitation Geophysics Earth and Planetary Sciences(all) |
description |
We provide the first comprehensive analysis of the relationships between large-scale patterns of Southern Hemisphere climate variability and the detailed structure of Antarctic precipitation. We examine linkages between the high spatial resolution precipitation from a regional atmospheric model and four patterns of large-scale Southern Hemisphere climate variability: the southern baroclinic annular mode, the southern annular mode, and the two Pacific-South American teleconnection patterns. Variations in all four patterns influence the spatial configuration of precipitation over Antarctica, consistent with their signatures in high-latitude meridional moisture fluxes. They impact not only the mean but also the incidence of extreme precipitation events. Current coupled-climate models are able to reproduce all four patterns of atmospheric variability but struggle to correctly replicate their regional impacts on Antarctic climate. Thus, linking these patterns directly to Antarctic precipitation variability may allow a better estimate of future changes in precipitation than using model output alone. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
Marshall, Gareth J. Thompson, David W.J. van den Broeke, Michiel R. |
author_facet |
Marshall, Gareth J. Thompson, David W.J. van den Broeke, Michiel R. |
author_sort |
Marshall, Gareth J. |
title |
The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation |
title_short |
The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation |
title_full |
The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation |
title_fullStr |
The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation |
title_full_unstemmed |
The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation |
title_sort |
signature of southern hemisphere atmospheric circulation patterns in antarctic precipitation |
publishDate |
2017 |
url |
https://dspace.library.uu.nl/handle/1874/428286 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
0094-8276 https://dspace.library.uu.nl/handle/1874/428286 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782341771709120512 |