Stochastically forced variability in the Antarctic Circumpolar Current
Abstract. Interannual fluctuations in the Antarctic Circumpolar Current (ACC) were considered. In the present study we analyze a mode of variability in the Hamburg Large-Scale Geostrophic ocean general circulation model which was driven by stochastic atmospheric forcing. The short-term atmospheric w...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1999
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.163.9313 http://www.knmi.nl/publications/fulltexts/jgr99b.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.163.9313 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.163.9313 2023-05-15T13:39:13+02:00 Stochastically forced variability in the Antarctic Circumpolar Current Ralf Weisse Uwe Mikolajewicz Andreas Sterl Sybren S. Drijfhout The Pennsylvania State University CiteSeerX Archives 1999 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.163.9313 http://www.knmi.nl/publications/fulltexts/jgr99b.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.163.9313 http://www.knmi.nl/publications/fulltexts/jgr99b.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.knmi.nl/publications/fulltexts/jgr99b.pdf text 1999 ftciteseerx 2016-01-07T15:48:22Z Abstract. Interannual fluctuations in the Antarctic Circumpolar Current (ACC) were considered. In the present study we analyze a mode of variability in the Hamburg Large-Scale Geostrophic ocean general circulation model which was driven by stochastic atmospheric forcing. The short-term atmospheric weather fluctuations were represented by a number of spatially coherent patterns of momentum, heat, and freshwater flux which were superimposed onto the climatological fluxes. These patterns were derived from an experiment with an atmospheric general circulation model forced with observed sea surface temperatures, and they were chosen randomly at each month. We found anomalies which propagate along the ACC at an interannual timescale. They can be explained by the combined effects of anomaly advection with the mean ocean circulation and integration of the short-term atmospheric weather fluctuations. Some similarities were found between our results and the concept of the Antarctic Circumpolar Wave, which was proposed recently to account for large-scale anomalies which propagate along the ACC in both the atmosphere and the ocean. 1. Text Antarc* Antarctic Unknown Antarctic The Antarctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract. Interannual fluctuations in the Antarctic Circumpolar Current (ACC) were considered. In the present study we analyze a mode of variability in the Hamburg Large-Scale Geostrophic ocean general circulation model which was driven by stochastic atmospheric forcing. The short-term atmospheric weather fluctuations were represented by a number of spatially coherent patterns of momentum, heat, and freshwater flux which were superimposed onto the climatological fluxes. These patterns were derived from an experiment with an atmospheric general circulation model forced with observed sea surface temperatures, and they were chosen randomly at each month. We found anomalies which propagate along the ACC at an interannual timescale. They can be explained by the combined effects of anomaly advection with the mean ocean circulation and integration of the short-term atmospheric weather fluctuations. Some similarities were found between our results and the concept of the Antarctic Circumpolar Wave, which was proposed recently to account for large-scale anomalies which propagate along the ACC in both the atmosphere and the ocean. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Ralf Weisse Uwe Mikolajewicz Andreas Sterl Sybren S. Drijfhout |
spellingShingle |
Ralf Weisse Uwe Mikolajewicz Andreas Sterl Sybren S. Drijfhout Stochastically forced variability in the Antarctic Circumpolar Current |
author_facet |
Ralf Weisse Uwe Mikolajewicz Andreas Sterl Sybren S. Drijfhout |
author_sort |
Ralf Weisse |
title |
Stochastically forced variability in the Antarctic Circumpolar Current |
title_short |
Stochastically forced variability in the Antarctic Circumpolar Current |
title_full |
Stochastically forced variability in the Antarctic Circumpolar Current |
title_fullStr |
Stochastically forced variability in the Antarctic Circumpolar Current |
title_full_unstemmed |
Stochastically forced variability in the Antarctic Circumpolar Current |
title_sort |
stochastically forced variability in the antarctic circumpolar current |
publishDate |
1999 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.163.9313 http://www.knmi.nl/publications/fulltexts/jgr99b.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://www.knmi.nl/publications/fulltexts/jgr99b.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.163.9313 http://www.knmi.nl/publications/fulltexts/jgr99b.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766116270359445504 |