青藏高原积雪异常与广西气候的关系  

Correlation between the Snow abnormal on Qinghai-Tibet Piatean and the Climatic in Guanggxi

作　　者：覃志年[1] 李秀存[2] 苏志 李耀先[2] 

机构地区：[1]广西气象局,南宁530022 [2]广西气象台,南宁530022 [3]广西气象科技信息服务中心,南宁530022

出　　处：《广西气象》2004年第3期18-20,共3页Journal of Guangxi Meteorology

摘　　要：利用青藏高原55个地面观测站的积雪日数、积雪深度资料,按年、春、夏、秋、冬不同时段分别进行时段距平计算,选取积雪日数、积雪深度均为正、负距平的年份,划分为高原积雪偏多、偏少年,在此基础上选取距平绝对值相对较大的年份为显著多雪年、显著少雪年。然后分析青藏高原积雪异常与广西异常气候事件的关系特征以及青藏高原积雪显著多、少雪年与广西不同时段的降水、气温的关系特征。结果发现:青藏高原积雪偏多、少与广西异常气候事件的关系不十分明显,好的对应概率也只有60%～75%左右,而青藏高原积雪显著多、少雪年对广西某些时段的降水、气温存在全区性的影响。The time periods of annual,spring,summer,autumn and winter anomalyof snowday and somwdepth were calculated by using the somw data from 55stations within the area of Qing-Zang plateau. Take both positive sonwday andsnowdepth anomaly year as more sonw year and both negative as less snowyear.Then analyse the correlations between anomaly plateau perpetual-snow andanomaly climate events and rainfall and temperature in diffrent periods ofGuangxi Province.The result is that there is no significant correlationbetween anomaly plateau perpetual-snow and anomaly climate events (the maxiamlcoeerlation factor is about 65～70 percent),but there is some effect of anomalyplateau perpetual-snow on rainfall and temperature in some periods of GuangxiProvince.

关 键 词：积雪深度 青藏高原 异常气候事件 降水 地面观测 气温 时段 年份 利用 划分 

分 类 号：P468.025[天文地球—大气科学及气象学] P426