| DIAGNOSTIC ANALYSIS OF MEAN MERIDIONAL CIRCULATION ANOMALY IN LOW LATITUDES IN RELATION TO ZONAL MEAN SST ANOMALY |
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| 引用本文： | 程亚军,王盘兴,李丽平. DIAGNOSTIC ANALYSIS OF MEAN MERIDIONAL CIRCULATION ANOMALY IN LOW LATITUDES IN RELATION TO ZONAL MEAN SST ANOMALY[J]. 热带气象学报(英文版), 2002, 8(2): 158-167 |
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| 作者姓名： | 程亚军 王盘兴 李丽平 |
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| 作者单位： | Nanjing Institute of Meteorology, Nanjing, 210044 China |
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| 摘 要： | The mass stream function of zonal mean meridional circulation is calculated in terms ofNCEP/NCAR monthly meridional wind speed and vertical velocity, and the climatic and anomalous features of zonal mean SST and meridional circulation are investigated. Results show that (1) a joint ascending branch of Northern and Southern Hadley circulation is on the side of the summer hemisphere near the equator ,being well consistent with the extremum of [SST ],and a strong descending by the winter-hemispheric side.(2)El Nino-related [SST] in low latitudes is an important outer-forcing source for anomaly meridional circulation, which is affected by seasonal variation of basic airflow and [SST ], and interannual and interdecadal changes of [SST] .
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| 关 键 词： | meridional circulation sea surface temperature anomalous relationship |
DIAGNOSTIC ANALYSIS OF MEAN MERIDIONAL CIRCULATION ANOMALY IN LOW LATITUDES IN RELATION TO ZONAL MEAN SST ANOMALY |
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| CHENG Ya-jun,WANG Pan-xing and LI Li-ping. DIAGNOSTIC ANALYSIS OF MEAN MERIDIONAL CIRCULATION ANOMALY IN LOW LATITUDES IN RELATION TO ZONAL MEAN SST ANOMALY[J]. Journal of Tropical Meteorology, 2002, 8(2): 158-167 |
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| Authors: | CHENG Ya-jun WANG Pan-xing LI Li-ping |
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| Affiliation: | Nanjing Institute of Meteorology |
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| Abstract: | The mass stream function of zonal mean meridional circulation is calculated in terms of NCEP/NCAR monthly meridional wind speed and vertical velocity, and the climatic and anomalous features of zonal mean SST and meridional circulation are investigated. Results show that (1) a joint ascending branch of Northern and Southern Hadley circulation is on the side of the summer hemisphere near the equator, being well consistent with the extremum of [SST], and a strong descending by the winter-hemispheric side. (2) El Ninorelated [SST] in low latitudes is an important outer-forcing source for anomaly meridional circulation, which is affected by seasonal variation of basic airflow and [SST], and interannual and interdecadal changes of [SST]. |
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| Keywords: | meridional circulation sea surface temperature anomalous relationship |
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