| SEASONAL DEPENDENCE OF LOCAL AIR-SEA INTERACTION OVER THE TROPICAL WESTERN PACIFIC WARM POOL |
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| 作者姓名： | 郑建秋 任保华 李 根 杨成昀 |
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| 作者单位： | School of Earth and Space Science, University of Science and Technology of China, Hefei 230026 China; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 China; |
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| 基金项目： | Fundamental Research Funds for the Central Universities(WK2080000037);Natural Science Foundation of Anhui Province(1208085QD75);Open Fund of the Key Laboratory of Ocean Circulation and Waves from Chinese Academy of Sciences(KLOCAW1204) |
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| 摘 要： | Based on the air-sea interface heat fluxes and related meteorological variables datasets recently released by Objectively Analyzed Air-Sea Fluxes (OA Flux) Project of Woods Hole Oceanographic Institution, as well as the outgoing longwave radiation and surface wind datasets from National Oceanic and Atmospheric Administration, the seasonal dependence of local air-sea interaction over the tropical western Pacific warm pool (referred to the region (1o-6oN, 144o-154oE)) is revealed and the probable impacts of remote forcing on the air-sea interaction are examined. The results indicated the dominance of oceanic forcing with the significant impact of ENSO in March and that of atmospheric feedback without notable influence of remote forcing in June. While the interannual variability of sea surface temperature anomaly (SSTA) is larger than that of SSTA tendency when oceanic forcing is dominant, the opposite is true when atmospheric feedback is dominant. The magnitude of the oceanic forcing of the atmosphere tends to decrease in March with the occurrence of ENSO, though ENSO has little influence on the atmospheric feedback to the ocean in June. The local air-sea interaction is substantially the same before and after the removal of the effect of Indian Oceanic Dipole. The reduction of shortwave radiation fluxes into the western Pacific warm pool, due to the enhanced overlaying convection in March associated with ENSO, leads to the decline of SST tendency that will weaken the oceanic forcing of the atmosphere.
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| 关 键 词： | air-sea interaction regression analysis warm pool sea surface temperature outgoing longwave radiation |
| 修稿时间： | 2014/7/28 0:00:00 |
SEASONAL DEPENDENCE OF LOCAL AIR-SEA INTERACTION OVER THE TROPICAL WESTERN PACIFIC WARM POOL |
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| ZHENG Jian-qiu,REN Bao-hu,LI Gen and YANG Cheng-yun.SEASONAL DEPENDENCE OF LOCAL AIR-SEA INTERACTION OVER THE TROPICAL WESTERN PACIFIC WARM POOL[J].Journal of Tropical Meteorology,2014,20(4):360-367. |
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| Authors: | ZHENG Jian-qiu REN Bao-hu LI Gen and YANG Cheng-yun |
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| Institution: | School of Earth and Space Science, University of Science and Technology of China, Hefei 230026 China; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 China; |
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| Abstract: | Based on the air-sea interface heat fluxes and related meteorological variables datasets recently released by Objectively Analyzed Air-Sea Fluxes (OA Flux) Project of Woods Hole Oceanographic Institution, as well as the outgoing longwave radiation and surface wind datasets from National Oceanic and Atmospheric Administration, the seasonal dependence of local air-sea interaction over the tropical western Pacific warm pool (referred to the region (1o-6oN, 144o-154oE)) is revealed and the probable impacts of remote forcing on the air-sea interaction are examined. The results indicated the dominance of oceanic forcing with the significant impact of ENSO in March and that of atmospheric feedback without notable influence of remote forcing in June. While the interannual variability of sea surface temperature anomaly (SSTA) is larger than that of SSTA tendency when oceanic forcing is dominant, the opposite is true when atmospheric feedback is dominant. The magnitude of the oceanic forcing of the atmosphere tends to decrease in March with the occurrence of ENSO, though ENSO has little influence on the atmospheric feedback to the ocean in June. The local air-sea interaction is substantially the same before and after the removal of the effect of Indian Oceanic Dipole. The reduction of shortwave radiation fluxes into the western Pacific warm pool, due to the enhanced overlaying convection in March associated with ENSO, leads to the decline of SST tendency that will weaken the oceanic forcing of the atmosphere. |
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| Keywords: | air-sea interaction regression analysis warm pool sea surface temperature outgoing longwave radiation |
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