| 印度洋海温的偶极振荡与高原汛期降水和温度的关系 |
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| 引用本文： | 刘青春,秦宁生,李栋梁,冯蜀青,张吉农,赵美刚.印度洋海温的偶极振荡与高原汛期降水和温度的关系[J].高原气象,2005,24(3):350-356. |
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| 作者姓名： | 刘青春 秦宁生 李栋梁 冯蜀青 张吉农 赵美刚 |
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| 作者单位： | 青海省气象局,青海,西宁,810001;中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院知识创新工程项目(KZCX1SW04)，国家自然科学基金项目(40465002)，科技部社会公益研究项目(2001DIB10085)共同资助 |
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| 摘 要： | 利用1961—2000年近40年印度洋海温距平场资料及对应的青藏高原35个观测站的降水与温度资料，通过相关普查得出，印度洋地区东西海温的偶极振荡与青藏高原汛期降水、温度有较好的相关关系，特别是前期1月、12月～2月的印度洋地区东西海温的偶极指数与青藏高原汛期(6～8月)降水和前一年6月的印度洋地区东西海温的偶极指数与青藏高原汛期(6～8月)温度有很好的相关。分析1961—2002年NCEP／NCAR 500hPa北半球高度场资料发现，印度洋地区东西海温的偶极指数与欧亚500hPa的高度场异常有密切的关系，并通过印度西南季风的强弱，影响到青藏高原汛期降水和温度的变化。
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| 关 键 词： | 印度洋海温 偶极指数 青藏高原汛期降水和温度 相关分析 |
| 文章编号： | 1000-0534(2005)03-0350-07 |
Relationship between Dipole Oscillation of Sea Temperature in Indian Ocean and Precipitation and Temperature in Flood Season over Qinghai-Xizang Plateau |
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| LIU Qing-chun,QIN Ning-sheng,LI Dong-liang,FENG Shu-qing,ZHANG Ji-nong,ZHAO Mei-gang.Relationship between Dipole Oscillation of Sea Temperature in Indian Ocean and Precipitation and Temperature in Flood Season over Qinghai-Xizang Plateau[J].Plateau Meteorology,2005,24(3):350-356. |
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| Authors: | LIU Qing-chun QIN Ning-sheng LI Dong-liang FENG Shu-qing ZHANG Ji-nong ZHAO Mei-gang |
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| Institution: | LIU Qing-chun+1,QIN Ning-sheng+1,LI Dong-liang+2,FENG Shu-qing+1,ZHANG Ji-nong+1,ZHAO Mei-gang+1 |
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| Abstract: | Based on the precipitation and temperature data of 35 stations over Qinghai-Xizang Plateau and anomalous field data of sea temperature over Indian Ocean in last 40 years, by correlation statistics, it is found that the dipole index of abnormal sea temperature over eastern/western Indian Ocean and the precipitation and temperature of flood period over Qinghai-Xizang Plateau has a better relation, especially the dipole index of sea temperature over eastern/western Indian Ocean in January, from December to February and the precipitation of flood period over Qinghai-Xizang Plateau, the dipole index of sea temperature over eastern/western Indian Ocean in last June and the temperature of flood period over Qinghai-Xizang Plateau has a very good correlation. By analyzing 500 hPa height field data in 1961_2002, it is found that the dipole index of sea temperature over eastern/western Indian Ocean has a close relation to the abnormal of Eurasia 500 hPa height field of Northern Hemisphere, which affects on the variation of precipitation and temperature of flood period over Qinghai-Xizang Plateau throush the strong and weak of Indian southwest monsoon. |
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| Keywords: | Indian Ocean sea temperatuere Dipole index Precipitation and temperature over Qinghai-Xizang Plateau Correlation analysis |
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