青藏高原地表反照率时空分布与统计回归计算  

Spatio-temporal Patterns and Statistical Analysis of Surface Albedo in Tibetan Plateau

作　　者：王鸽[1] 韩琳[2] 

机构地区：[1]中国气象局成都高原气象研究所,成都610072 [2]成都信息工程学院,成都610225

出　　处：《高原山地气象研究》2011年第4期1-6,共6页Plateau and Mountain Meteorology Research

基　　金：中国气象局成都高原气象研究所开放实验室课题基金项目(LPM2009018和BROP201001);四川省气象局2010年度科学技术研究开发课题(川气课题2010-预研-01)

摘　　要：本文在利用NOAA/AVHRR数据反演得到1982～2000年青藏高原地区地表反照率时空分布的基础上,分析了地表反照率的时空变化及其与温度和降水之间的关系,得到地表反照率与温度和降水之间的统计方程,并用此方程计算了青藏高原地区地表反照率的时空分布。研究结果表明:青藏高原地区年均地表反照率的分布与高原自然地理带的分布特征大致吻合;地表反照率与温度和降水均有较好的相关性,相关性因下垫面植被类型的不同而有较大的差异,滞后1个月的温度和滞后2个月的降水的综合作用与地表反照率的相关性最好;月均地表反照率与温度和降水之间的二元曲线回归方程可以比较好的统计回归计算出青藏高原地区地表反照率的空间分布,该模型的系统偏差比较小,回归计算的效果比较好。Based on NOAA/AVHRR data from 1982 to 2000,we have researched the dimensional distribution and change of surface albedo in Tibetan Plateau,researched the relationship between the change of albedo and temperature precipitation,obtained the statistical relationship between surface albedo and temperature precipitation,and calculated the distribution and change of surface albedo in Tibetan Plateau by using the regression equation.The results indicated that there were observably difference in the dimensional distribution of annual mean surface albedo in Tibetan Plateau,there were better correlations between surface albedo and temperature lag about one month and precipitation lag about two months;the equation could be better to simulate the spatial distribution and seasonal variation of regional surface albedo in Tibetan Plateau,the statistical indices suggested that the equation possessed a small deviation and a perfect simulate.

关 键 词：地表反照率 时空分布 温度 降水 

分 类 号：P461.3[天文地球—大气科学及气象学]