大气中臭氧9.6μ带辐射收支的计算

计算大气中的长波辐射时,吸收气体的光学厚度要作气压订正,一般取气压订正后的光学厚度u′=(p/p_0)~K,对于O_3的9.6μ带,理论分析和实验都表明K是u和p的函数,气压订正可取 u′=(p/p_0)~(K(u,p))=uf(u,p). 我们以Walshaw的实验为基础,求出f(u,p)的囹形,并求出辐射通量及辐射通量散度的计算表。 当u很小时,弱线近似成立。漫射辐射的吸收率A_f=1-exp(-2su/d),K→0。在u→0时,dA_f/du=s2/d为一常量。

RADIATIVE HEAT TRANSFER DUE TO THE 9.6 MICRONBAND OF OZONE

For 9.6,u band of ozone theory and experimental results show that the pressurecorrection(p/p₀)^K for optical length a of absorbing gas is a function of fr and u. The pressure-correction f(u,p)=(p/p₀)^K is determined from experimental results. The mean slab absorptivity A_f(U') and dA_f(U')/du' of this band is computed When a is small, weak line approximarion is valid,A_f=1-exp(-2su/d),f(u,p)=1. The pressure-correction for du' in calculating radiative divergence dF_z/du' should be unity, and dA_f(U')/du' approaches a constant value 2s/d.