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首页> 外文期刊>Surveys in Geophysics: An International Review Journal of Geophysics and Planetary Sciences >Infrared Radiation in the Mesosphere and Lower Thermosphere: Energetic Effects and Remote Sensing
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Infrared Radiation in the Mesosphere and Lower Thermosphere: Energetic Effects and Remote Sensing

机译：中层和低层热层的红外辐射：能量效应和遥感

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This paper discusses the formation mechanisms of infrared radiation in the mesosphere and lower thermosphere (MLT), the energetic effects of the radiative absorption/emission processes, and the retrieval of atmospheric parameters from infrared radiation measurements. In the MLT and above, the vibrational levels of the molecules involved in radiative transitions are not in local thermodynamic equilibrium (LTE) with the surrounding medium, and this then requires specific theoretical treatment. The non-LTE models for CO_2, O_3, and H_2O molecules are presented, and the radiative cooling/heating rates estimated for five typical atmospheric scenarios, from polar winter to polar summer, are shown. An optimization strategy for calculating the cooling/heating rates in general circulation models is proposed, and its accuracy is estimated for CO_2. The sensitivity of the atmospheric quantities retrieved from infrared observations made from satellites to the non-LTE model parameters is shown.
机译：本文讨论了中层和下层热层（MLT）中红外辐射的形成机理，辐射吸收/发射过程的能量效应以及从红外辐射测量中获取大气参数的方法。在MLT及更高版本中，涉及辐射跃迁的分子的振动水平与周围介质不处于局部热力学平衡（LTE）中，因此需要进行特殊的理论处理。给出了CO_2，O_3和H_2O分子的非LTE模型，并显示了从极地冬季到极地夏季五个典型大气情景的估计辐射冷却/加热速率。提出了一种计算一般循环模型中冷却/加热速率的优化策略，并估计了其对CO_2的准确性。显示了从卫星进行的红外观测中检索到的大气量对非LTE模型参数的敏感性。

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