利用Nimbus-7行星反射率观测资料估算青藏高原地区的总辐射

ESTIMATION OF GLOBAL RADIATION OVER THE QINGHAI-XIZANG PLATEAU FROM NIMBUS-7 PLANETARY ALBEDO DATA

中文摘要:

      本文利用1982年8月-1983年7月期间Nimbus-7行星反射率的月平均资料用“物理模式方法(Raschke and Preuss,1979)”估算了青藏高原及其邻近地区月平均地面总辐射的分布.得到的结果较好地反映了纬度、海拔与云量三个主要因子对总辐射分布的支配作用.根据高原及其邻近地区23个测站的资料,对总辐射的计算值与观测值进行了比较.统计分析表明,相关系数f=0.90,标准误差RMS=27w/m²,平均绝对误差ABS=21w/m²(相当于有效平均总辐射的11.7%).文中还对误差来源和敏感性问题进行了讨论.

英文摘要:

      In this paper, the solar global radiation at the surface over the Qinghai-Xizang Plateau and its surrounding areas is estimated from Nimbus-7 monthly average planetary albedo data (August 1982 to July 1983) based on "physical model method (Raschke and Preuss, 1979)" Maps of the satellite estimated monthly average global radiation show the expected patterns, which are mainly dominated by latitude, elevation and cloud cover. The estimated global radiations were comparied with surface measurements for 23 stations of radiation network in the related region. The statistical correlation analysis indicates that the standard error RMS=27 W/m² mean absolute error ABS=21 W/m² and the correlation coefficient R=0.90.The error sources are discussed along with the sensitivity study.