祁连山地区气温和降水变化分析  

Temperature and Precipitation Analysis in Qilian Mountain

作　　者：张华伟[1] 鲁安新[1] 王丽红[1] 吴雪娇[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃兰州730000

出　　处：《甘肃联合大学学报（自然科学版）》2011年第5期34-40,共7页Journal of Gansu Lianhe University :Natural Sciences

基　　金：全球变化研究重大科学研究计划(2010CB951403);国家自然科学基金资助项目(40771210);中国科学院知识创新项目(KZCX2-YW-310)

摘　　要：利用祁连山区17个气象站1952-2007年温度和降水资料,分析了其变化特征.运用趋势线拟合及相关性分析方法,得出如下结论:(1)所有气象站的年均温和夏季均温都呈上升趋势,而年降水和夏季降水大部分是上升趋势,有少量减小.并得出年均温和夏季均温上升趋势最大的气象站,年降水和夏季降水上升趋势最大气象站,以及年降水和夏季降水下降趋势的气象站.(2)年降水与夏季降水及年均温与夏季均温都有很好的相关性,降水的相关性要好于温度的相关性.并得出相关性较好的气象站,指出气象站降水和温度的一些特点.(3)2000年以来,各气象站的年均温和年降水量变化趋势均表现出一定的差异性,并初步分析了成因.This paper analyzes variation characteristics of temperature and precipitation using 17 meteorological stations data of Qilian Mountain in 1952-2007.Using trend line fitting and correlation analysis,we get some conclusions.Firstly,annual mean temperature and summer mean temperature of all meteorological stations are ascending trends,but most of meteorological stations' annual precipitation and summer precipitation are ascending trends,and some is descending trend.And we obtain maximum ascending trend meteorological stations of annual mean temperature and summer mean temperature,as well as annual precipitation and summer precipitation,and descending trend meteorological stations of annual precipitation and summer precipitation.Secondly,annual mean temperature and summer mean temperature,and annual precipitation and summer precipitation have a good correlation,and the correlation of precipitation is better than correlation of temperature.And we get some better correlation meteorological stations and indicate some characteristics of meteorological stations' precipitation and temperature.The Last,annual mean temperature and annual precipitation of each meteorological stations show some differences since 2000,and we preliminary analyze the cause.

关 键 词：祁连山 年均温 夏季均温 年降水 夏季降水 

分 类 号：P42[天文地球—大气科学及气象学]