| THE CLIMATIC JUMP OF THE WESTERN PACIFIC WARM POOL AND ITS CLIMATIC EFFECTS |
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| 作者姓名： | 赵永平 吴爱明 陈永利 胡敦欣 |
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| 作者单位： | Institute of Oceanology，Chinese Academy of Sciences，Institute of Oceanology，Chinese Academy of Sciences，Institute of Oceanology，Chinese Academy of Sciences，Institute of Oceanology，Chinese Academy of Sciences |
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| 基金项目： | Science Foundation of China (499060003)，esearch on the Relationship Between the Variations of Western Pacific Warm Pool and Summer Dryness in Shandong Province?Science Foundation of Shandong |
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| 摘 要： | 1INTRODUCTIONTropicalwesternPacificOceanisanareathathasthehighestoceantemperatureacrosstheglobe.Asmostofthewarmwaterconcentratesintheregion,itisknownasthe搘esternPacificwarmpool?Asshowninsomestudies1-5],thegeneralcirculationandshort-termclimaticchangeswillbeseriouslyaffectedifthermodynamicconditionchangesinthewaters,whichthenhaveanimportantroletoplayintheonsetofanyENSOepisodes.Therehasnotbeenanyunifieddefinitionoftheindexforthewarmpool.FollowingthecriterionofWyrtki4],however,theareae…
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| 关 键 词： | 西太平洋 暖池 气候变化 气候影响 |
THE CLIMATIC JUMP OF THE WESTERN PACIFIC WARM POOL AND ITS CLIMATIC EFFECTS |
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| ZHAO Yong-ping,WU Ai-ming,CHEN Yong-li and HU Dun-xin.THE CLIMATIC JUMP OF THE WESTERN PACIFIC WARM POOL AND ITS CLIMATIC EFFECTS[J].Journal of Tropical Meteorology,2003,9(1):9-18. |
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| Authors: | ZHAO Yong-ping WU Ai-ming CHEN Yong-li and HU Dun-xin |
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| Institution: | Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071,China |
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| Abstract: | The climatic jump of the western Pacific warm pool and its climatic effects were analyzed using the SST (COADS, NCEP) datasets. The results show that the warm pool has significant interdecadal variability with periods of 10 to 20 years and four major climatic jumps with periods of 40 to 50 years for a time dating back for more than 100 years, which happened in the 1910's, 1930's, 1950's and 1980's. The warm pool jumps have important climatic effects. After the jumps,the SST increases by about 0.5(C in central and eastern tropical Pacific; the Pacific subtropical high at 500 hPa strengthens and goes southwestward, the precipitation bands tend to be in southern China. The results also show that El Ni?oevent will happen more often than the La Ni?a event when the warm pool anomalously develops, and the La Ni?a event will happen more often than the El Ni?o event when the warm pool anomalously declines. Over the recent 40-to-50 year period,the warm pool is still in its strengthening stage and it is possible that the drought in northern China will continue in the first decade of 21st century. |
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| Keywords: | western Pacific warm pool climatic jump climatic effects |
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