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| 1998年青藏高原降水特征及大气LFO对长江流域低频降水的影响 | |
| 引用本文： | 徐国强,朱乾根,白虎志.1998年青藏高原降水特征及大气LFO对长江流域低频降水的影响[J].气象科学,2003,23(3):282-291. |
| 作者姓名： | 徐国强 朱乾根 白虎志 |
| 作者单位： | 1. 中国气象科学研究院,北京,100081 2. 南京气象学院,南京,210044 3. 甘肃省气象台,兰州,730020 |
| 基金项目： | 国家“十五”科技攻关项目 2 0 0 1BA6 0 7B0 3，中国气象科学院 2 0 0 1年博士启动基金资助 |
| 摘 要： | 本文使用美国NCAR—NCEP再分析的逐日资料，研究了1998年夏季青藏高原降水特征及大气准45d低频振荡(LFO)对长江流域低频降水的影响。研究表明，6月19日左右青藏高原雨季开始，青藏高原是水汽输送的汇区，青藏高原影响了我国东部的降水天气过程，使长江流域降水不均匀;青藏高原的大气低频振荡对东部地区低频降水也产生了影响，使低频降水带在青藏高原的东坡出现不连续现象。 |
| 关 键 词： | 青藏高原 低频振荡 低频降水 |
| 收稿时间： | 2002/5/30 0:00:00 |
| 修稿时间： | 2002年5月30日 |
RAINFALL FEATURES OF THE TIBETAN PLATEAU AND LFO INFLUENCE ON LOW FREQUENCY PRECIPITATION IN THE YANGTZE RIVER BASIN |
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| Xu Guoqiang,Zhu Qiangen and Bai Huzhi.RAINFALL FEATURES OF THE TIBETAN PLATEAU AND LFO INFLUENCE ON LOW FREQUENCY PRECIPITATION IN THE YANGTZE RIVER BASIN[J].Scientia Meteorologica Sinica,2003,23(3):282-291. | |
| Authors: | Xu Guoqiang Zhu Qiangen and Bai Huzhi |
| Institution: | Xu Guoqiang 1 Zhu Qiangen 2 Bai Huzhi 3 |
| Abstract: | In the context of NCAR reanalysis of daily data in 1998, this paper is concerned with rainfall features of the Tibetan Plateau and low frequency oscillation (LFO) influence on low frequency precipitation in the Yangtze River basin in 1998. Research results suggest that rain season of Tibetan Plateau began on June 19,1998, and that Tibetan Plateau is sink area of vapor transportation. Precipitation in the Yangtze River basin becomes inhomogeneous with impact of the highland. LFO over the highland lends to discrete low-frequency precipitation belt at the east slope of the highland. |
| Keywords: | Tibetan Plateau LFO Low frequency precipitation |
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