Baroclinic Waves Propagating From A High‐Latitude Source
Abstract A time‐dependent primitive‐equation model of the southern hemisphere winter troposphere with an idealized dome‐shaped continent centred at 80°S has been used to assess the potential of Antarctica to force stationary waves and to determine the location of the mid‐latitude baroclinic storm tr...
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crwiley:10.1002/qj.49711850303 2024-06-02T07:58:38+00:00 Baroclinic Waves Propagating From A High‐Latitude Source Watterson, I. G. James, I. N. British Antarctic Survey-Natural Environment Research Council 1992 http://dx.doi.org/10.1002/qj.49711850303 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49711850303 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49711850303 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 118, issue 503, page 23-50 ISSN 0035-9009 1477-870X journal-article 1992 crwiley https://doi.org/10.1002/qj.49711850303 2024-05-03T10:46:20Z Abstract A time‐dependent primitive‐equation model of the southern hemisphere winter troposphere with an idealized dome‐shaped continent centred at 80°S has been used to assess the potential of Antarctica to force stationary waves and to determine the location of the mid‐latitude baroclinic storm track. Several integrations of the model for two hundred days were made with the zonal‐mean fields fixed at the climatological values. In the time mean of each run an anticyclonic wave response formed over the mountain and a planetary wave propagated into the mid latitudes with substantial amplitude. This suggests that much of the observed stationary asymmetry in the southern, mid and high latitudes may be due to Antarctica. The response to the Antarctic forcing was different in a steady, linear version of the model. However, interaction between the steady waves appears to be of minor importance to the time‐mean pattern. Rather, E‐vector fields point to a substantial effect of the transients on the pattern. In particular, the low‐frequency transients appear to be important in the balance of the time‐mean equations near the mountain. Article in Journal/Newspaper Antarc* Antarctic Antarctica Wiley Online Library Antarctic The Antarctic Quarterly Journal of the Royal Meteorological Society 118 503 23 50 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A time‐dependent primitive‐equation model of the southern hemisphere winter troposphere with an idealized dome‐shaped continent centred at 80°S has been used to assess the potential of Antarctica to force stationary waves and to determine the location of the mid‐latitude baroclinic storm track. Several integrations of the model for two hundred days were made with the zonal‐mean fields fixed at the climatological values. In the time mean of each run an anticyclonic wave response formed over the mountain and a planetary wave propagated into the mid latitudes with substantial amplitude. This suggests that much of the observed stationary asymmetry in the southern, mid and high latitudes may be due to Antarctica. The response to the Antarctic forcing was different in a steady, linear version of the model. However, interaction between the steady waves appears to be of minor importance to the time‐mean pattern. Rather, E‐vector fields point to a substantial effect of the transients on the pattern. In particular, the low‐frequency transients appear to be important in the balance of the time‐mean equations near the mountain. |
author2 |
British Antarctic Survey-Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
Watterson, I. G. James, I. N. |
spellingShingle |
Watterson, I. G. James, I. N. Baroclinic Waves Propagating From A High‐Latitude Source |
author_facet |
Watterson, I. G. James, I. N. |
author_sort |
Watterson, I. G. |
title |
Baroclinic Waves Propagating From A High‐Latitude Source |
title_short |
Baroclinic Waves Propagating From A High‐Latitude Source |
title_full |
Baroclinic Waves Propagating From A High‐Latitude Source |
title_fullStr |
Baroclinic Waves Propagating From A High‐Latitude Source |
title_full_unstemmed |
Baroclinic Waves Propagating From A High‐Latitude Source |
title_sort |
baroclinic waves propagating from a high‐latitude source |
publisher |
Wiley |
publishDate |
1992 |
url |
http://dx.doi.org/10.1002/qj.49711850303 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49711850303 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49711850303 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 118, issue 503, page 23-50 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/qj.49711850303 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
118 |
container_issue |
503 |
container_start_page |
23 |
op_container_end_page |
50 |
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1800742069062336512 |