2001: Tropical Atlantic air-sea interaction and its influence on the
Abstract. An atmospheric general circulation model (AGCM) is forced with a prescribed SST dipole anomaly in the tropical Atlantic to investigate the cause of crossequatorial SST gradient (CESG) variability and its teleconnection to the extratropics. The model response bears a striking resemblance to...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.145.2313 2023-05-15T16:28:54+02:00 2001: Tropical Atlantic air-sea interaction and its influence on the Yuko Okumura Shang-ping Xie Atusi Numaguti Youichi Tanimoto The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.2313 http://iprc.soest.hawaii.edu/~xie/yuko_grl01.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.2313 http://iprc.soest.hawaii.edu/~xie/yuko_grl01.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://iprc.soest.hawaii.edu/~xie/yuko_grl01.pdf text ftciteseerx 2016-01-07T15:06:49Z Abstract. An atmospheric general circulation model (AGCM) is forced with a prescribed SST dipole anomaly in the tropical Atlantic to investigate the cause of crossequatorial SST gradient (CESG) variability and its teleconnection to the extratropics. The model response bears a striking resemblance to observations in both the tropics and extratropics. The tropical response is robust and can act to reinforce the prescribed SST anomalies through windinduced evaporation. A new feedback mechanism involving low-level stratiform clouds in the subtropics is also identified in the model and observations. The tropical SST dipole forces a barotropic teleconnection into the extratropics that projects onto the North Atlantic Oscillation (NAO). It further induces the extratropical portion of the North Atlantic SST tripole when the AGCM is coupled with an ocean mixed layer model. CESG variability thus appears to be the centerpiece of a pan-Atlantic climate pattern observed to extend from the South Atlantic to Greenland. 1. Text Greenland North Atlantic North Atlantic oscillation Unknown Greenland |
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English |
description |
Abstract. An atmospheric general circulation model (AGCM) is forced with a prescribed SST dipole anomaly in the tropical Atlantic to investigate the cause of crossequatorial SST gradient (CESG) variability and its teleconnection to the extratropics. The model response bears a striking resemblance to observations in both the tropics and extratropics. The tropical response is robust and can act to reinforce the prescribed SST anomalies through windinduced evaporation. A new feedback mechanism involving low-level stratiform clouds in the subtropics is also identified in the model and observations. The tropical SST dipole forces a barotropic teleconnection into the extratropics that projects onto the North Atlantic Oscillation (NAO). It further induces the extratropical portion of the North Atlantic SST tripole when the AGCM is coupled with an ocean mixed layer model. CESG variability thus appears to be the centerpiece of a pan-Atlantic climate pattern observed to extend from the South Atlantic to Greenland. 1. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Yuko Okumura Shang-ping Xie Atusi Numaguti Youichi Tanimoto |
spellingShingle |
Yuko Okumura Shang-ping Xie Atusi Numaguti Youichi Tanimoto 2001: Tropical Atlantic air-sea interaction and its influence on the |
author_facet |
Yuko Okumura Shang-ping Xie Atusi Numaguti Youichi Tanimoto |
author_sort |
Yuko Okumura |
title |
2001: Tropical Atlantic air-sea interaction and its influence on the |
title_short |
2001: Tropical Atlantic air-sea interaction and its influence on the |
title_full |
2001: Tropical Atlantic air-sea interaction and its influence on the |
title_fullStr |
2001: Tropical Atlantic air-sea interaction and its influence on the |
title_full_unstemmed |
2001: Tropical Atlantic air-sea interaction and its influence on the |
title_sort |
2001: tropical atlantic air-sea interaction and its influence on the |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.2313 http://iprc.soest.hawaii.edu/~xie/yuko_grl01.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic North Atlantic oscillation |
genre_facet |
Greenland North Atlantic North Atlantic oscillation |
op_source |
http://iprc.soest.hawaii.edu/~xie/yuko_grl01.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.2313 http://iprc.soest.hawaii.edu/~xie/yuko_grl01.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766018590813716480 |