中国地－气系统净辐射的气候特征

根据ＥＲＢＥ和ＩＳＣＣＰ资料讨论了总云量等因子对地－气系统净辐射的影响，分析了地－气系统净辐射与其各分量及地表净辐射的相关联系。发现行星反射率和地气短波吸收辐射对地－气净辐射的影响最大，而云和纬度的作用主要通过该两因子变化表现出来，ＯＬＲ的作用则相对较弱。地－气净辐射与地表净辐射的相关性也较明显。文中还就地－气净辐射在全国的地理分布作了分析。各地区地－气净辐射的年变曲线均为简单的夏大冬小型，云等因素的影响主要造成最大值出现月份的推移。

CLIMATIC CHARACTERISTICS OF NET RADIATION IN THE EARTH-ATMOSPHERE SYSTEM OVER CHINA

Based on ERBE and ISCCP data,a study is performed of the effects of the factors like total cloudiness upon the earth-atmosphere net radiation(EANR),and also of its relation to other components and the surface net radiation,Results show that the maximum effects on theearth-atmosphere net radiation are exerted by the planetary albedo and earth-atmosphereabsorbed shortwave radiation,with the impact of cloud cover and latitude shown mainly through the variation of values of the two factors above;OLR plays a relatively feeble role;the correlation is obvious between EANR and ground net radiation. Further,an analysis is conducted of theEANRdistribution over the country with the result that the annual curve is marked by summer(winter)high(low)value for all parts of the nation,with the influence of cloudiness and latitudechiefly responsible for the maximum having a temporal shift.