非平衡行星大气发射与透射的Line-by-Line计算模式  

LINE by LINE CALCULATION MODEL OF EMISSION AND TRANSMIS SION FOR THE NON EQUILIBRIUM PLANETARY ATMOSPHERES

作　　者：向安平[1] 朱世德[1] 任基 

机构地区：[1]成都气象学院基础科学系

出　　处：《红外与毫米波学报》1997年第6期425-430,共6页Journal of Infrared and Millimeter Waves

摘　　要：导出了非局域热力学平衡（ＮＬＴＥ）行星大气发射与透射的基本公式，假设转动能级是热力学平衡（ＬＴＥ）的，建立了一个精确的Ｌｉｎｅ－ｂｙ－Ｌｉｎｅ（ＬＢＬ）ＮＬＴＥ发射与透射的有效算法计算较高层行星大气红外活跃样品的辐射强度．用本算法计算了地球大气１２Ｃ１６Ｏ２４．３μｍ和１５μｍ带在白天、夜晚和ＮＬＴＥ、ＬＴＥ条件下的临边辐射强度，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 the non local thermodynamic equilibrium (NLTE) planetary atmospheres were derived. By assuming that rotational levels within a vibrational level remain in local thermodynamic equilibrium(LTE),an accurate and efficient line by line(LBL) algorithm of NLTE emission and transmission was developed to evaluate the radiance due to infrared active species in the upper planetary atmospheres. The limb viewing radiance of the earth′s atmosphere for the 4.3μm and 15μm bands of 12 C 16 O 2 under daytime and nighttime, NLTE and LTE conditions was calculated by using this algorithm. The results of calculations reveal that NLTE radiance obviously departs from LTE.

关 键 词：NLTE 辐射强度 LBL算法 大气发射 地球 大气透射 

分 类 号：P422[天文地球—大气科学及气象学]