摘要
本文分析了天山山区近 4 0a来年降水变化的基本特征 ,并与南疆、北疆进行了比较 ,所得的主要结果如下 :(1)天山山区在年降水量干湿变化阶段上与北疆的相似性强于南疆。(2 )年降水量的空间分布的同步变化性以北疆为最好 ,南疆最差 ,天山山区居中 ,而年降水量的空间分布的反向变化性 ,以天山山区为最大 ,北疆最小 ,南疆居中。(3)天山山区与南疆从 6 0年代到 90年代 ,年降水均表现出了持续的增加的趋势 ,北疆年降水从 6 0年代到 90年代 ,除 70年代外 ,不断增多。
The basic features of annual precipitation in Tianshan mountainous area for the recent 40 years are analyzed and compared with those in the Southern and Northern Xinjiang in the paper,the main results are as follows: 1. The similarity of wet-dry stage of annual precipitation in Tianshan mountainous area is better than those in the Southern and Northern Xinjiang. 2.The synchronous change of spatial distribution of annual precipitation is the best in the Northern Xinjiang,the worst in the Southern Xinjiang and better in Tianshan mountainous area,but the reverse change of spatial distribution of annual precipitation is the greatest in Tianshan mountainous area,the least in the Northern Xinjiang and lesser in the Southern Xinjiang. 3.From 1960s to 1990s,annual precipitation changes in Tianshan mountainous area and the Southern Xinjiang show increasing trend,but annual precipitation in the Southern Xinjiang continuously increases except 1970s.
出处
《气象科学》
CSCD
北大核心
2004年第2期220-226,共7页
Journal of the Meteorological Sciences
基金
国家自然科学基金项目 (40 2 6 5 0 0 2 )
科技部项目 (2 0 0 2CCA0 4 6 0 0 )
新疆气象局课题资助
关键词
天山山区
年降水变化特征
南疆
北疆
Tianshan mountainous area The recent 40 years Features of annual precipitation The Southern Xinjiang The Northern Xinjiang
