Effects of Temperature Variations with Height on the Nonequilibrium Populations of Vibrational States of Molecules in Planetary Atmospheres

A. O. Semenov; G. M. Shved

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Effects of Temperature Variations with Height on the Nonequilibrium Populations of Vibrational States of Molecules in Planetary Atmospheres

机译：高度温度变化对行星大气中分子振动态非平衡态种群的影响

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The model of the standard problem of radiative transfer in a vibrational-rotational band that we suggested previously (Shved and Semenov, 2001) for a nonlocal thermodynamic equilibrium (non-LTE) in vibra-tional molecular states is used to study the populations of these states in a nonisothermal planetary atmosphere. The temperature profile in the atmosphere is specified as a temperature perturbation in the form of a Gaussian function that is superimposed on an isothermal atmosphere. We show that the temperature profile has a complex effect on the state populations, which makes it difficult to analytically represent this effect. We investigate the influence of the peculiar features of the temperature profile in an LTE layer on the non-LTE height and suggest a criterion for determining those features that weakly affect this height. Using the populations of the CO_2 01~10 and 00~01 states in the atmospheres of the Earth and Mars as examples, we show that the formulas suggested for estimating the non-LTE height are efficient.

机译：我们先前（Shved and Semenov，2001）提出的关于振动分子状态下的非局部热力学平衡（non-LTE）的标准模型在振动旋转带中用于研究这些分子的种群。在非等温行星大气中的状态。大气中的温度曲线被指定为叠加在等温大气上的高斯函数形式的温度扰动。我们表明，温度曲线对状态种群具有复杂的影响，这使得很难以分析方式表示这种影响。我们调查了LTE层中温度曲线的特殊特征对非LTE高度的影响，并提出了确定那些弱影响该高度的特征的标准。以地球和火星大气中CO_2 01〜10和00〜01状态的种群为例，我们表明建议的用于估算非LTE高度的公式是有效的。

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《Solar system research》 |2003年第4期|p.306-313|共8页
作者
A. O. Semenov; G. M. Shved;
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作者单位

Department of Atmospheric Physics, Institute of Physics, St. Petersburg State University, Ul'yanovskaya 1, Petrodvorets, St. Petersburg, 198504 Russia;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类天文学;
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机译：振动非平衡分子的等离子体化学。

Effects of Temperature Variations with Height on the Nonequilibrium Populations of Vibrational States of Molecules in Planetary Atmospheres

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