摘要
运用气象统计学和气象学的原理和方法,分析新疆地区50年来自然降水变化的基本特征。结果表明:1)50年来新疆各地降水量都呈逐年递增趋势;其中,北疆年降水量的变化振幅较大,增加的趋势也较快;南疆降水量变化振幅较小,增加的趋势也较慢;2)新疆降水量上世纪80年代开始明显偏多,而且,近10年增加量较快;3)近50年来,新疆地区年平均降水量变化有明显的季节差异,其中,北疆冬季降水量和南疆秋季降水量增长贡献较大,北疆秋季和南疆春季降水贡献较小。南疆和北疆各季度降水量均为逐年持续增加的趋势,对应各季度增率北大南小。
The precipitation data of the resent 50 years in Xinjiang are analyzed by means of the principals and methods of meteorological statistical and meteorology.The results showed that：1） The annual precipitation has been in an increase trend in recent 50 years,the change swing and the increase tendency was higher Northern Xinjiang than Southern Xinjiang.2） The results show that an increase trend in precipitation in the study area has been occurring since 1980,especially since 2000.3）In recent 50 years,precipitation change was significantly different from different seasons：the contribution of precipitation increase in winter of the Northern Xinjiang and in autumn of the Southern Xinjiang to the annual one was the highest,and then that in autumn the Northern Xinjiang and in spring of the Southern Xinjiang was the lowest,annual precipitation in the Xinjiang was in an increase trend,and the increase trend was highest Northern Xinjiang than Southern Xinjiang in every season.
出处
《石河子大学学报（自然科学版）》
CAS
2011年第6期737-741,共5页
Journal of Shihezi University(Natural Science)
关键词
南疆
北疆
自然降水量
气候变化
趋势
Southern Xinjiang
Northern Xinjiang
precipitation
climate change
tendency
