| THE CORRELATION BETWEEN THE PACIFIC SEA SURFACE TEMPERATURE (SST) and PRECIPITATION OVER NW CHINA |
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| 作者姓名： | 王澄海 王式功 杨德保 董安祥 |
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| 作者单位： | College of Resource and Environmental Science of Lanzhou University，College of Resource and Environmental Science of Lanzhou University，College of Resource and Environmental Science of Lanzhou University，College of Resource and Environmental Science of Lanzhou University |
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| 基金项目： | The effects of sea-land-air interactions in Asian monsoon on the climate change in China” by the Chinese Academy of Sciences (ZKCX2-SW-210)，“Mechanisms for the generation of hungriness and optimized model for comprehensive prevention and control” by |
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| 摘 要： | 1INTRODUCTIONFormorethanadecade,theair-seainteractionshavebecomeawell-knowncoresubjectofclimateresearch.Largeamountoffactsandtheoreticresearchhaveshownthattheoceanisplayinganessentialroleinclimatechangesonvirtuallyalltimescales1,2].Tropicaloceansaremajorsuppliersofenergyforglobalatmosphericmotion.Theareaofoceantakesupmorethan70%oftheEarth抯surfaceandvariationsofthetropicaloceancontributemuchtotheinterannualvariationofthegeneralcirculationandclimate3].Ithasbeenacknowledgedthattheanomaly…
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| 关 键 词： | 中国 西北地区 太平洋表面温度 SST SVD 奇异值分解 相互关系 气候影响 “厄尔尼诺”现象 |
THE CORRELATION BETWEEN THE PACIFIC SEA SURFACE TEMPERATURE (SST) and PRECIPITATION OVER NW CHINA |
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| WANG Cheng-hai,WANG Shi-gong,YANG De-bao and DONG An-xiang.THE CORRELATION BETWEEN THE PACIFIC SEA SURFACE TEMPERATURE (SST) and PRECIPITATION OVER NW CHINA[J].Journal of Tropical Meteorology,2003,9(1):64-73. |
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| Authors: | WANG Cheng-hai WANG Shi-gong YANG De-bao and DONG An-xiang |
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| Institution: | 1. College of Resource and Environmental Science of Lanzhou University, Lanzhou,730000 China
2. Meteorological Bureau of Gansu Province, Lanzhou |
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| Abstract: | With the singular value decomposition (SVD), correlation analysis has been conducted between the Pacific Ocean sea surface temperature (SST) and northwestern China precipitation over March - May (MAM). The result shows that there is good relationship between the North Pacific and spring precipitation in northwestern China. When the SST is of the peak El Ni?o phase, precipitation is less over this part of the country except for the Qinghai-Tibetan Plateau; when the SST for the months DJF is of the mature El Ni?o phase, precipitation is more overthe region in the subsequent March - May; when the North Pacific SST for DJF isof the La Ni?a pattern, precipitation is less over the plateau in the subsequent March - May. For the Pacific SST, the westerly drift, kuroshio current, Californian current and north equatorial current are all significantly correlating with the March - May precipitation in northwestern China. Specifically, the SST in DJF over the kuroshio current region is out of phase with the precipitation in northern Xinjiang, i.e. when the former is low, the latter is more. In northwestern China, regions in which March - May precipitation response to the variation of SST in the Pacific Ocean are northern Xinjiang, the Qinghai-Tibetan Plateau and areas off its northeastern part, the desert basin and western part of the Corridor of the Great Bend of Yellow River valley (Corridor). |
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| Keywords: | precipitation of Northwest China Pacific sea surface temperature (SST) singular value decomposition (SVD) |
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