摘要
根据 196 1— 2 0 0 1年新疆代表北疆的 8个气象站、天山山区的 8个气象站、南疆的 8个气象站的实测资料 ,分析了 40a来新疆气温、降水、沙尘暴、扬沙、浮尘年代际变化特征 .结果显示 :40a来新疆气温呈明显上升趋势 ,后 10a(1991— 2 0 0 0年 )比前 30a平均气温升高 ,北疆偏高 0 8℃ ,南疆和天山山区均偏高 0 5℃ ;降水变化的总趋势是增湿明显 ,后 10a与前 30a相比降水增加 ,南疆偏多2 0 4 %,北疆偏多 11 3%,天山山区偏多 9 8%;南疆与北疆各类沙尘天气年际变化趋势基本相似 ,80年代以来呈减少趋势 ;南疆沙尘暴、扬沙、浮尘总日数之和与同期的温度、降水在春季有相对较好的线性相关关系 .
Analyzing the observations from 8 weather stations in the north Xinjiang Region and 8 weather stations in the south Xinjiang Region, as well as 8 weather stations in the Tianshan Mountains, during1961_2001, the changing features of air temperature, precipitation, sand-dust storm, blowing-sand and floating dust in the region are revealed. It is found: 1) Air temperature has an increasing trend obviously. Temperature from 1991 to 2000 was higher than that from 1961 to 1990, with an increase of 0^8 ℃ in the north and 0^5 ℃ in the south and in the Tianshan Mountains. 2) Generally precipitation change has an obviously increasing trend. Comparing precipitation from 1991 to 2000 with that from 1961 to 1990, it is found an increase of 20^4% in the south, an increase of 11^3% in the north and an increase of 9^8% in the Tianshan Mountains. 3) The inter-decadal changing tends of various sand-dust weathers on the south and north is basically similitude; the sand-dust weather has obviously decreased since the 1980s. 4) There is a better linear correlation between the sum of occurring days of sand-dust storm, blowing-sand and floating dust and the temperature and precipitation in spring in the south.
出处
《冰川冻土》
CSCD
北大核心
2003年第4期423-427,共5页
Journal of Glaciology and Geocryology
基金
国家重点基础研究发展规划项目 (G19990 435 )
中国科学院知识创新工程重大项目 (KZCX1\| 10 0 6 )
国家重大基础研究前期专项 (2 0 0 2CCA0 46 0 0 )
新疆维吾尔自治区科委项目 (980 10 30 0 9)资助
关键词
新疆
气温
降水
沙尘天气
气候变化
temperature
precipitation
sand-dust weather
climate change
Xinjiang
