of about thousand spectral lines for radiative transitions which are taken from the HITRAN database. But this theory may be used for evaluation of the local atmospheric heat or radiative balance for regions of size of several kilometers, if the temperature profile and space distribution of emitting components are known. In particular, it may be used in meteorological evaluations. In addition note, that because throughout this book spectroscopy parameters are used, we infer that frequencies of

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... diative transitions, as well energies of molecular states, are expressed in the spectroscopy unit cm −1 . We have the following conversion this unit in other ones 1 cm −1 = 1.2398 ⋅ 10 −4 eV = 1.8837 ⋅ 10 5 MHz = 1.9864 ⋅ 10 −16 erg = 1.4388K. In the same manner, the temperature is measured in energetic units, so that 1K = 1.3807 ⋅ 10 −16 erg = 8.6174 ⋅ 10 −5 eV = 0.69504cm −1 = 1.9872 ⋅ 10 −3 kcal/mol. This simplifies the analysis.