| Registro completo |
| Provedor de dados: |
20
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| País: |
Belgium
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| Título: |
The Influence of Pacific SST on the Precipitation over Southern Africa Diagnosed from an AGCM
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| Autores: |
Misra, V.
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| Data: |
2005-07-26
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| Ano: |
2002
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| Palavras-chave: |
Sea surface temperature
Precipitation (meteorology)
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| Resumo: |
This study is an analysis of AGCM model results to understand the dynamics of the response of precipitation over southern Africa (SA) to anomalies in the sea surface temperature (SST) over the Pacific Ocean. The dipole pattern of interannual precipitation anomaly over SA and its temporal variations are quite similar in both the ensemble mean of the control (where the AGCM is forced with observed SST’s in all ocean basins) and experimental runs (where the AGCM is forced with seasonally varying climatological SST over the Pacific Ocean). However the amplitude of the variability is found to be relatively reduced in the experimental runs. This is shown to be a result of the modulation of the Walker circulation by the variability of Pacific Ocean SST. The regional teleconnection pattern between the dominant mode of SA precipitation variability and SST anomalies over eastern Indian Ocean is also influenced by the variations in Pacific SST. The nature of the teleconnection between SA precipitation and eastern Indian SST is apparent only when the Pacific SST variability is excluded.
Center for Ocean-Land-Atmosphere Studies Institute of Global Environment and Society, Inc. - Calverton
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| Tipo: |
Report
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| Idioma: |
Inglês
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| Identificador: |
http://hdl.handle.net/1834/501
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| Editor: |
Center for Ocean-Land-Atmosphere Studies
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| Relação: |
:* (inlove)
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| Formato: |
58088 bytes
application/pdf
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