• 生态环境与全球变化 •

### 夏季风作用下的纵向岭谷区夏季降水量 年际变化的时空特征和规律

1. 1. 云南大学资源环境与地球科学学院, 昆明650091|
2. 云南省丽江教育学院, 丽江674100
• 收稿日期:2007-05-01 修回日期:2007-08-01 出版日期:2007-09-25 发布日期:2007-09-25
• 作者简介:尤卫红(1962-), 男(汉), 云南人,1998 年毕业于南京大学气候学专业并获理学博士学位, 现任教 授、博士生导师.主要从事气候和水文水资源变化研究.E- mail:youweih@sina.com
• 基金资助:

国家自然科学基金项目(40575046); 国家重大基础研究发展计划(973 计划)(2003CB415100); 云 南省自然科学基金项目(2004D0005M).

### Tempor al- Spatial Featur es and Law of Summer Pr ecipitation Inter annual Var iability Over the Longitudinal Range- Gorge Region under Effect of the Summer Monsoon

YOU Weihong1, Wu Xiangyun2, LI Dejun1

1. 1. School of Resource Environment and Earth Science, Yunnan University, Kunming, 650091) (
2. Lijiang University of Education,Yunnan Province, Lijiang, 674100
• Received:2007-05-01 Revised:2007-08-01 Online:2007-09-25 Published:2007-09-25

Abstract:

Using the temporal wavelet transform method for three- dimensional data , the temporal- spatial features and law of summer precipitation interannual variability over the Longitudinal Range- Gorge Region (LRGR) under effect of the summer monsoon are investigated. The results show that there are 2- year, 7- year and 16- year characteristic timescales for the summer precipitation interannual variability over the LRGR under the effect of the summer monsoon. The larger amplitude energy regions corresponding to the 2 - year, 7 - year and 16 - year characteristic timescales are consistent with or normal to the mountain ranges of LRGR respectively. The summer precipitation longitudinal evolutions of the larger central latitude in association with the 2- year characteristic timescale show obviously longitudinal oscillations. But the summer precipitation longitudinal evolutions of the larger central latitudes in association with the 7- year and 16- year characteristic timescales have obviously the tendency to move towards the west and the east respectively. The summer precipitation latitudinal evolutions of the larger central longitude in association with the 2- year characteristic timescale also show obviously latitudinal oscillations. But the summer precipitation latitudinal evolutions of the larger central longitudes in association with the 7- year and 16- year characteristic timescales have obviously the tendency to move towards the north and the south respectively.