晴天太阳总辐射的一种参数化形式

根据北京、拉萨等站实测晴天总辐射资料，讨论了应用别尔梁德理论式Ｑ０＝Ｉ０ｓｉｎｈ／１＋ｆｍ作晴天总辐射参数化的可能性。式中除ｆ为参数外，其余符号均属通用。ｆ的参数化形式为ｆ＝０．１８１＋０．０６８８ｌｎ（１＋ｅ），ｅ为水汽压。经灵敏度分析和反演检验证实，该式具有较高的拟合精度（平均相对误差为４．１％）。计算并证实晴天总辐射在自由大气中随气压呈线性变化。最后还讨论了ｆ系数的某些物理、气候特征。

A VERSION OF CLEAR-SKY SOLAR TOTAL RADMTION PARAMETERIZATION

In the context of clear-sky solar total radiation (CKSTR)data from stations in Beijing,Lhasa, etc. ,study is made of the possibility of the Berlyand theoretical expression Q_0=for the CKSTR parameterization,where f is a parameter,others being in conventional notation. And the parameterized f takes the form f=0.181 0.0688 n(1 e)with e as vaporpressure. Sensitivity analysis and retrieval verificat ion show the theoretical formula to be ofhigher fitting accuracy(the mean relative error of 4.1%).As is calculated and confirmed,theCKSTR changes linearly with pressure in the free atmosphere,In the end,f is examined withregard to some of its physical and climatic characteristics.