| 高原冬季风及热带太平洋海温对西南地区冬季气温的影响 |
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| 引用本文： | 齐冬梅,赖欣,李跃清,等.高原冬季风及热带太平洋海温对西南地区冬季气温的影响[J].高原山地气象研究,2016,36(3):32-38. |
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| 作者姓名： | 齐冬梅 赖欣 李跃清 等 |
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| 作者单位： | 1. 中国气象局成都高原气象研究所/高原与盆地暴雨旱涝灾害四川省重点实验室, 成都 610072; |
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| 基金项目： | 41305082)；成都高原气象开放实验室基金课题(BROP201613)国家自然科学基金项目(41505078 |
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| 摘 要： | 利用1979~2008年西南地区115个测站逐日气温资料和NCEP/NCAR R2日平均再分析资料,通过相关分析和合成分析,讨论了高原冬季风季节内变化特征及其与西南地区冬季气温之间的关系。结果表明:高原冬季风指数和同期西南地区冬季平均的逐日气温呈反相关关系。高原冬季风偏强、偏弱时,对流层高层、中层、低层环流场分布形势均有显著差别,当高原冬季风偏强时,同期东亚冬季风偏弱,Nino3.4区海温偏高,对流层从高层到低层环流场形势均不利于西南地区冬季低温;当高原冬季风偏弱时,同期东亚冬季风偏强,Nino3.4区海温偏低,对流层从高层到低层环流场形势均有利于西南地区冬季低温。
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| 关 键 词： | 高原季风 西南地区 冬季气温 东亚冬季风 热带太平洋海温 |
| 收稿时间： | 2016-07-30 |
Effects of the Tibetan Plateau Winter Monsoon and SST in Tropical Pacific Ocean on the Winter Temperature in Southwest China |
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| Institution: | 1. Chengdu Institute of Plateau Meteorology/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, CMA, Chengdu 610072, China;2. College of Atmospheric Sciences,Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu 610225, China |
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| Abstract: | Using NCEP/NCAR R2 reanalysis daily data and the daily temperature data at 115 meteorological stations in southwest China from 1979 to 2008,the variation characteristics of the Tibetan Plateau winter monsoon(TPWM) and its relation with winter temperature in southwest China are analyzed and discussed by the correlation and composite analysis. The main conclusions are as follows: There exists obvious negative correlation between the TPWM and the winter temperature in southwest China. There exist significant differences in the distribution of the circulation fields in the high,middle and low layer of troposphere when the TPWM is in the strong and weak phase. In the strong TPWM phase,because the East Asian winter monsoon is weak with high Nino3.4 sea surface temperature,the circulation fields in troposphere do not lead to the lower temperature in southwest China. On the contrary,in the weak TPWM phase,the East Asian winter monsoon is strong with low sea surface temperature in Nino3.4,thus the circulation fields in troposphere make great contributions to the lower temperature in southwest China. |
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