Model studies on vibrationally-rotationally excited hydroxyl molecules in the mesosphere and rotational temperatures

中间层振动旋转激发羟基分子和旋转温度的模型研究

• 批准号: 392888112
• 负责人: Professor Dr. Justus Notholt
• 金额: --
• 依托单位: Abteilung für Erdfernerkundung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/392888112?language=en
• 关键词: Model; studies; vibrationally; rotationally; excited

One of the standard methods to remotely sense the temperature of the mesopause region is based on spectroscopic measurements of the rotational temperatures of hydroxyl molecules. For the interpretation of the retrieved rotational temperatures, the aspect of rotational thermalization is of great importance. However, there is only a very limited number of studies on this topic. The aim of this project is to investigate rotationally-vibrationally excited OH molecules of the hydroxyl airglow layer in the upper mesosphere/lower thermosphere. For this purpose, a first-principle kinetic model of vibrationally-rotationally excited hydroxyl molecules will be developed. The model will be used to simulate concentrations of excited hydroxyl molecules and emission rates at different altitudes and for different atmospheric conditions. In particular, the rotational state distributions will be analyzed to assess deviations from local thermodynamic equilibrium. The model results will be compared to ground-based and satellite measurements.

远程感知中层区域温度的标准方法之一是基于羟基分子旋转温度的光谱测量。为了解释检索到的旋转温度，旋转热化的方面非常重要。但是，关于此主题的研究数量很少。该项目的目的是研究上层/下热层中羟基气流层的旋转激发OH分子。为此，将开发出振动激发的羟基分子的第一原则动力学模型。该模型将用于模拟激发羟基分子的浓度和在不同高度和不同大气条件下的排放速率。特别是，将分析旋转状态分布以评估与局部热力学平衡的偏差。模型结果将与地面和卫星测量结果进行比较。

项目成果

Model studies on vibrationally-rotationally excited hydroxyl molecules in the mesopause region

中层顶区域振动旋转激发羟基分子的模型研究

• DOI: 10.5194/egusphere-egu2020-15350
• 发表时间: 2020
• 作者: J. Notholt;H. Winkler;S. Noll
• 通讯作者: S. Noll

OH level populations and accuracies of Einstein-A coefficients from hundreds of measured lines

• DOI: 10.5194/acp-20-5269-2020
• 发表时间: 2019-12
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: S. Noll;H. Winkler;O. Goussev;B. Proxauf