Teleconnections and low‐frequency variability in idealized experiments with two storm tracks
Abstract Low‐frequency variability and teleconnection patterns induced by two storm tracks in idealized experiments depend on their zonal distance. A separation of about 150°, which resembles the northern hemisphere storm‐track distribution, reveals teleconnection patterns which are similar to the P...
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crwiley:10.1002/qj.49712757411 2024-06-02T08:11:24+00:00 Teleconnections and low‐frequency variability in idealized experiments with two storm tracks Franzke, Christian Fraedrich, Klaus Lunkeit, Frank 2001 http://dx.doi.org/10.1002/qj.49712757411 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49712757411 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49712757411 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Quarterly Journal of the Royal Meteorological Society volume 127, issue 574, page 1321-1339 ISSN 0035-9009 1477-870X journal-article 2001 crwiley https://doi.org/10.1002/qj.49712757411 2024-05-03T12:01:08Z Abstract Low‐frequency variability and teleconnection patterns induced by two storm tracks in idealized experiments depend on their zonal distance. A separation of about 150°, which resembles the northern hemisphere storm‐track distribution, reveals teleconnection patterns which are similar to the Pacific North American (PNA) pattern and the North Atlantic Oscillation (NAO). The NAO‐like structure is associated with retrograde travelling Rossby waves; barotropic stream‐function tendencies show that the interaction of the stationary eddies with the low‐frequency flow and the high‐frequency eddies contribute to the amplification of the pattern. Its decay is due to their interaction with the zonal‐mean flow, and the low‐frequency contribution to the divergence term. The PNA‐like pattern has a longer memory and is linked to a quasi‐stationary wave. The stationary‐wave activity flux shows the dominating influence of baroclinic processes and the other storm track further upstream. The correlation between the teleconnection indices is significant for storm‐track distances between 180° and 160°, and vanishes between 150° and 130°. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Pacific Quarterly Journal of the Royal Meteorological Society 127 574 1321 1339 |
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Wiley Online Library |
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language |
English |
description |
Abstract Low‐frequency variability and teleconnection patterns induced by two storm tracks in idealized experiments depend on their zonal distance. A separation of about 150°, which resembles the northern hemisphere storm‐track distribution, reveals teleconnection patterns which are similar to the Pacific North American (PNA) pattern and the North Atlantic Oscillation (NAO). The NAO‐like structure is associated with retrograde travelling Rossby waves; barotropic stream‐function tendencies show that the interaction of the stationary eddies with the low‐frequency flow and the high‐frequency eddies contribute to the amplification of the pattern. Its decay is due to their interaction with the zonal‐mean flow, and the low‐frequency contribution to the divergence term. The PNA‐like pattern has a longer memory and is linked to a quasi‐stationary wave. The stationary‐wave activity flux shows the dominating influence of baroclinic processes and the other storm track further upstream. The correlation between the teleconnection indices is significant for storm‐track distances between 180° and 160°, and vanishes between 150° and 130°. |
format |
Article in Journal/Newspaper |
author |
Franzke, Christian Fraedrich, Klaus Lunkeit, Frank |
spellingShingle |
Franzke, Christian Fraedrich, Klaus Lunkeit, Frank Teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
author_facet |
Franzke, Christian Fraedrich, Klaus Lunkeit, Frank |
author_sort |
Franzke, Christian |
title |
Teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
title_short |
Teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
title_full |
Teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
title_fullStr |
Teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
title_full_unstemmed |
Teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
title_sort |
teleconnections and low‐frequency variability in idealized experiments with two storm tracks |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1002/qj.49712757411 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49712757411 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49712757411 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Quarterly Journal of the Royal Meteorological Society volume 127, issue 574, page 1321-1339 ISSN 0035-9009 1477-870X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/qj.49712757411 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
127 |
container_issue |
574 |
container_start_page |
1321 |
op_container_end_page |
1339 |
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1800757534214062080 |