A Gill–Matsuno‐type mechanism explains the tropical Atlantic influence on African and Indian monsoon rainfall
Recent studies using coupled atmosphere–ocean models have shown that the tropical Atlantic has a significant impact on the Indian monsoon. In this article, the observational basis for this teleconnection is examined and the physical mechanism responsible for bridging sea‐surface temperatures (SSTs)...
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| Veröffentlicht in: | Quarterly journal of the Royal Meteorological Society 2009-04, Vol.135 (640), p.569-579 |
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| container_title | Quarterly journal of the Royal Meteorological Society |
| container_volume | 135 |
| creator | Kucharski, F. Bracco, A. Yoo, J. H. Tompkins, A. M. Feudale, L. Ruti, P. Dell'Aquila, A. |
| description | Recent studies using coupled atmosphere–ocean models have shown that the tropical Atlantic has a significant impact on the Indian monsoon. In this article, the observational basis for this teleconnection is examined and the physical mechanism responsible for bridging sea‐surface temperatures (SSTs) in the Atlantic and precipitation over India is investigated with idealized atmospheric general circulation model (AGCM) experiments in which constant SST anomalies are prescribed and ‘switched on’ in the tropical Atlantic region. A simple Gill–Matsuno‐type quadrupole response is proposed to explain the teleconnection between the tropical Atlantic and the Indian basin, with an enforcement of the eastward response likely due to nonlinear interactions with the mean monsoon circulation. The simplicity of this mechanism suggests the reproducibility of this result with a broad range of AGCMs. Copyright © 2009 Royal Meteorological Society |
| doi_str_mv | 10.1002/qj.406 |
| format | Article |
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A simple Gill–Matsuno‐type quadrupole response is proposed to explain the teleconnection between the tropical Atlantic and the Indian basin, with an enforcement of the eastward response likely due to nonlinear interactions with the mean monsoon circulation. 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The simplicity of this mechanism suggests the reproducibility of this result with a broad range of AGCMs. Copyright © 2009 Royal Meteorological Society</description><subject>African monsoon</subject><subject>climate variability</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Indian monsoon</subject><subject>Meteorology</subject><subject>Physics of the high neutral atmosphere</subject><subject>teleconnection mechanisms</subject><issn>0035-9009</issn><issn>1477-870X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp1kMFKAzEURYMoWKt-QzYKLqa-ZCbJZFmKVqUigoK7IaYZmpLJTJMp2l0_QfAP_RIjiq5c3Qf3cHhchI4JjAgAPV8tRwXwHTQghRBZKeBpFw0AcpZJALmPDmJcAgATVAzQaoyn1rmP7fut6uPatx_bt37TGdwYvVDexgab184p6yPuFwb3oe2sVg6Pe6d8bzW2vnZr47XBrcfjOqTWY-Xn-NrPbTqb1sc2VSE5auXcIdpLEc3RTw7R4-XFw-Qqm91NryfjWabzsuAZF4WgALWupckpU6QEKqXIhaSl4hJKyVUu5oIwwQtGaQlK8edcijlhWgqZD9Hpt7cL7WptYl81Nmrj0tumXceKAmOcSPoH6tDGGExddcE2KmwqAtXXotVqWaVFE3jyY1QxTVAH5bWNvzQlueCUlYk7--ZerDObf2zV_c2X8xMPzYPs</recordid><startdate>200904</startdate><enddate>200904</enddate><creator>Kucharski, F.</creator><creator>Bracco, A.</creator><creator>Yoo, J. 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| ispartof | Quarterly journal of the Royal Meteorological Society, 2009-04, Vol.135 (640), p.569-579 |
| issn | 0035-9009 1477-870X |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; EZB-FREE-00999 freely available EZB journals |
| subjects | African monsoon climate variability Earth, ocean, space Exact sciences and technology External geophysics Indian monsoon Meteorology Physics of the high neutral atmosphere teleconnection mechanisms |
| title | A Gill–Matsuno‐type mechanism explains the tropical Atlantic influence on African and Indian monsoon rainfall |
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