摘要
利用全国720个观测站中西藏的38个气象观测站点1960～2001年逐日气温资料，采用数理统计、小波分析、M－K突变检验、经验正交函数（ EOF）等方法，对42年来该地区温度的时间变化特征进行了分析。结果表明，西藏地区气温具有显著的时空变化特征，全区温度总体上呈上升趋势，升幅为0．352℃／10 a，特别是藏西地区的气温上升幅度整体较高，为0．417℃／10 a；西藏地区气温与海拔高度有很好的负相关，气温随海拔增高而降低。
Abstract
By using daily temperature data in 38 meteorlogical observation stations in Tibet during 1960-2001, adopting mathematical statistics, wavelet analysis, M-K mutation test, empirical orthogonal function (EOF), the temporal variation characteristics of temperature in 42 years were analyzed.The results showed that temperature in Tibet had significant temporal and spatial variation characteristics, temperature of whole region indicated an upward trend with increasing rate of 0.352 ℃/10 a, temperature in western Tibet was improved significantly with rate of 0.417 ℃/10 a;temperature in Tibet region had a negative correlation with altitude, temperature decreased with the increase of altitude.
国家科技期刊平台
NSTL
维普
万方数据