非平衡大气辐射强度与透过率的Line-By-Line计算模式

LINE BY LINE CALCULATION MODEL OF RADIANCE AND TRANSMITTANCE FOR THE NON EQUILIBRIUM ATMOSPHERES

导出了非局域热力学平衡（ＮＬＴＥ）大气辐射强度与透过率的基本公式，以及ＮＬＴ和ＬＴＥ的线强、光学厚度和透过率的关系。假设转动能级是热力学平衡（ＬＴＥ）的，建立了一个精确的ＬｉｎｅｂｙＬｉｎｅＮＬＴＥ辐射强度与透过率的有效算法来计算较高层行星大气红外活跃样品的辐射强度。计算了地球大气１６Ｏ３９６μｍ带在白天、夜晚和ＮＬＴＥ、ＬＴＥ条件下的临边光谱辐射强度、线积分辐射强度、带积分辐射强度和合成光谱辐射强度，揭示了ＮＬＴＥ辐射强度对ＬＴＥ辐射强度有显著而重要的偏离。

The basic formulas of the emission and transmission for non local thermodynamic equlibrium(NLTE)planetary atmospheres are derived.By assuming that rotational levels within a vibrational level remain in thermodynamic equilibrium,an accurate and efficient line by line algorithm of NLTE emission and transmission is developed to evaluate the radiance due to infrared active species in the upper planetary atmospheres.The limb viewing spectral radiance,line integrated radiance,band integrated radiance and synthetic spectral radiance of the Earth's atmosphere for the 9 6μm bands of 16 O 3 under daytime and nighttime and under NLTE and LTE conditions are calculated by using this algorithm.The results of calculations reveal that NLTE radiance obviously departs from LTE.