天山乌鲁木齐河流域山区气候特征分析  

The Climatic Features of Tianshan Urumqi River Valley

作　　者：张寅生[1] 康尔泗[1] 刘潮海[1] 

机构地区：[1]中国科学院兰州冰川冻土研究所

出　　处：《冰川冻土》1994年第4期333-341,共9页Journal of Glaciology and Geocryology

摘　　要：乌鲁木齐河流域山区的地理特点使其气候特征与平原区不同；气温年变幅小，降水年内分配极不均匀。每年１１月至来年３月在海拔１０００－２４００ｍ处形成逆温层。根据不同台站同期年平均降水量分析，大致在海拔１９００ｍ和３５００ｍ左右有两个较大降水带。气温与湿度随海拔的变化在不同高度带内并不一致。６０年代以来，其气温变化较平原地区要小得多，而降水量在减少的同时其变率增加。The geographic condition make topical features in Urumqi River Valley．Comparingwith low lands，there is a similar seasonal varition of air temperatures in the valley，but oppo-site trend seasonal varition of relective humidity and more disproporate distribution of pre-cipitation. The laps ratio of air temperature is increased with altitude low than 2 400 m a.s.l.and decreased on higher．There is a strong inversion of the air temperature between 1000 to2400 m a.s．l．from November to next March. The vapour pressure is decreased with altitudebut relective huinidity is increased with altitude excipt few height zone. There are two moreprecipitation zone at 1900 m and 3 500 m a.s.l. From 1960s，there is a very little changes ofannal air temperature in the valley but the amount of annal precipitation is much more de-creased.

关 键 词：气候特征 气温 降水 河流 

分 类 号：P463.1[天文地球—大气科学及气象学]