| 山东夏季降水的气候特征及其成因 |
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| 引用本文： | 杨士恩,王启.山东夏季降水的气候特征及其成因[J].热带气象学报,2007,23(1):65-71. |
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| 作者姓名： | 杨士恩 王启 |
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| 作者单位： | 1. 聊城市气象局,山东,聊城,252060
2. 中国海洋大学,山东,青岛,266003 |
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| 基金项目： | 湖北省科委重点科学发展计划项目 |
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| 摘 要： | 用GMS TBB和ECMWF的格点风资料,采用带通滤波、EOF分解和合成分析方法,对湖北省洪涝年出现“二度梅”年(1980、1998年)和无“二度梅”年(1991、1999年)的南海和青藏高原TBB的低频振荡特征进行了分析研究。结果表明:有(无)“二度梅”年,南海低频TBB在6～7月的振荡位相是相反的;在7月下旬～8月上旬,南海低频TBB为高(低)值位相,青藏高原低频TBB为低(高)值位相。南亚地区低频TBB场EOF1的空间分布形式呈“南负北正”(南正北负)。
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| 关 键 词： | 30～60 d振荡 南海 青藏高原 二度梅雨 |
| 文章编号： | 1004-4965(2007)01-0059-06 |
| 收稿时间： | 2005/10/12 0:00:00 |
| 修稿时间： | 2005-09-20 |
THE CLIMATE CHARACTERISTIC OF PRECIPITATION AND ORIGIN CAUSE OF FORMATION IN SUMMER OF SHANDONG PROVINCE |
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| YANG Shi-en and WANG Qi.THE CLIMATE CHARACTERISTIC OF PRECIPITATION AND ORIGIN CAUSE OF FORMATION IN SUMMER OF SHANDONG PROVINCE[J].Journal of Tropical Meteorology,2007,23(1):65-71. |
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| Authors: | YANG Shi-en and WANG Qi |
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| Institution: | Wuhan Central Meteorological Observatory, Wuhan 430074, China |
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| Abstract: | By using monthly averaged NCEP/NCAR reanalysis data of the atmospheric circulation and the data of summer precipitation in 40 meteorological stations in Shandong province from 1961 to 1998,the climate characteristics of precipitation in the summer of Shandong are analyzed,and the atmospheric circulation anomalies of drought and flood have been compared and analyzed.The result show that the basic precipitation pattern is in phase with each part of the whole province.The summer rainfall is degressive from southeast to northwest of the province.An obvious difference exists with the circulation situation between years of drought and flood.In the years of flood,the East Asia Trough,Ural Blocking High and Western North Pacific Subtropical High are very important systems influencing the summer precipitation.Three warm,wet air currents meet over Shandong and offer plentiful water vapor for precipitation.Opposite situation appears in the above circulation characteristic in the years of drought. |
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| Keywords: | TBB |
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