| 澳洲冷空气活动与长江中下游降水的联系分析 |
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| 引用本文： | 谢月玉,王式功,董安祥,尚可政.澳洲冷空气活动与长江中下游降水的联系分析[J].长江流域资源与环境,2009,18(7):625. |
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| 作者姓名： | 谢月玉 王式功 董安祥 尚可政 |
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| 作者单位： | 1.兰州大学大气科学学院 甘肃省干旱气候变化与减灾重点实验室,甘肃 兰州 730000； 2.福建省气象局气象科技服务中心,福建 福州 350001； 3.中国气象局兰州干旱气象研究所,甘肃 兰州 730000 |
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| 基金项目： | 科技部国家科技支撑计划项目 |
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| 摘 要： | 利用澳洲范围700 hPa温度场的再分析资料和长江中下游降水资料，通过谱分析方法，试析了澳洲冷空气活动对我国长江中下游主汛期降水的影响，并进一步分析了西太平洋副热带高压在此中起的作用。研究结果表明：在我国夏季，澳洲变温与涝年长江中下游主汛期的降水都具有77 d的周期，两者存在着77 d周期的遥相关，同时在77 d的周期两者呈现同位相振荡。也就表明在77 d的周期澳洲冷高压变动时经73 d后影响长江中下游降水。同时也得出澳洲冷高压强时，西太平洋副热带高压北移，长江中下游受西太平洋副热带高压控制，晴天少雨；澳洲冷高压弱时，西太平洋副热带高压南落，长江中下游处西太平洋副热带高压边缘，多降水天气。以上结论对长江中下游降水预报有一定的指示意义。
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| 关 键 词： | 变温 降水 谱分析 西太平洋副热带高压 |
ANALYZING THE RELATION BETWEEN AUSTRALIAN COLD AIR ACTIVITIES AND PRECIPITATION OF MIDDLE AND LOWER REACHES OF THE CHANGJIANG RIVER |
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| XIE Yue-yu,WANG Shi-gong,DONG An-xiang,SHANG Ke-zheng.ANALYZING THE RELATION BETWEEN AUSTRALIAN COLD AIR ACTIVITIES AND PRECIPITATION OF MIDDLE AND LOWER REACHES OF THE CHANGJIANG RIVER[J].Resources and Environment in the Yangtza Basin,2009,18(7):625. |
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| Authors: | XIE Yue-yu WANG Shi-gong DONG An-xiang SHANG Ke-zheng |
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| Institution: | 1.College of Atmospheric Sciences,Lanzhou University；Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province,Lanzhou 730000,China|2.Science technology Servicing Center in Fujian Province Meteorological Administration,Fuzhou 350001,China；3.Lanzhou Institute of Arid Meteorology,China MeteorologicalAdministration,Lanzhou 730000,China |
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| Abstract: | The influence of Australian cold air activities on precipitation of middle and lower reaches of the Changjiang River within main flood season is studied initially by using statistical methods of spectrum.Moreover,the West Pacific Subtropical High affects grievously the above influence.The data root in Australian 700 hPa analytical temperature and precipitation of middle and lower reaches of the Changjiang River.Conclusions are as follows:During summer season of China a 7.7 days period of the temperature alt... |
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| Keywords: | temperature alteration precipitation spectrum The West Pacific Subtropical High |
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