Modelling atmospheric effects of electrical discharges

模拟放电的大气效应

基本信息

项目摘要

Lightning is known to be an important source of nitrogen radicals in the troposphere, and this is taken into account in many atmospheric chemistry and climate chemistry models. Recent measurements have shown that there is also significant production of hydrogen radicals (HOx) in electrified clouds. This production has been attributed to weak subvisible electrical discharges. Both the formation mechanism of HOx in electrified clouds as well as the atmospheric impacts are hardly investigated. The aim of this project is to study the impacts of weak electrical discharges on reactive hydrogen species and other trace gases in the Earth's atmosphere. For this purpose, a plasma chemistry model will be used. Model simulations will be carried out for a comparison with laboratory measurements, and for an analysis of the impact of hydrometeor discharges in electrified clouds. Additionally, the model will be used to investigate the chemical effects of weak electrical discharges at higher altitudes, as there are significant discrepancy between measured and modelled HOx enhancements over active thunderstorms. Furthermore, an atmospheric chemistry and transport model will be used to study the global impact of HOx production in electrified clouds.
闪电是对流层氮自由基的重要来源,许多大气化学和气候化学模型都考虑到了这一点。最近的测量表明,在带电云中也有大量的氢自由基(HOx)产生。这种产生归因于微弱的亚可见放电。带电云中HOx的形成机制以及带电云对大气的影响目前还很少有人研究。该项目的目的是研究弱放电对地球大气中活性氢物质和其他痕量气体的影响。为此,将使用等离子体化学模型。将进行模型模拟,以便与实验室测量结果进行比较,并分析带电云中水凝物放电的影响。此外,该模型将用于研究在较高海拔地区弱放电的化学效应,因为在活跃雷暴中测量和模拟的HOx增强之间存在显着差异。此外,还将使用一个大气化学和传输模式来研究带电云层中HOx产生的全球影响。

项目成果

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Professor Dr. Justus Notholt其他文献

Professor Dr. Justus Notholt的其他文献

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{{ truncateString('Professor Dr. Justus Notholt', 18)}}的其他基金

Investigating the atmospheric composition from the 1950s on using historical solar absorption infrared spectra
使用历史太阳吸收红外光谱研究 20 世纪 50 年代的大气成分
  • 批准号:
    421869546
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Studying dissolved organic carbon in tropical rivers of Malaysia using in-situ and satellite observations
利用现场和卫星观测研究马来西亚热带河流中的溶解有机碳
  • 批准号:
    407264719
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
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
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Sabbatical for six months at the JRC in Ispra/Italy for (1) measurement of NH3 and other trace gases in the atmosphere in a region with very variable and high NH3 values (2) to intensify the cooperation with the JRC
在意大利伊斯普拉的 JRC 休假六个月,目的是 (1) 在 NH3 值变化很大且高的地区测量大气中的 NH3 和其他痕量气体 (2) 加强与 JRC 的合作
  • 批准号:
    287116743
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Ground-based remote sensing measurements of CO2 and CH4 using the moon as light source during the polar night
极夜期间以月球为光源的CO2和CH4地面遥感测量
  • 批准号:
    196775932
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Implications of energetic particle precipitation events for the temperature and dynamics of the atmosphere - a model study
高能粒子降水事件对大气温度和动力学的影响——模型研究
  • 批准号:
    182650365
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigating the diurnal variability of trace gases in the TROpical West PACific measured by solar absorption spectrometry in the infrared (TROPAC)
通过红外太阳吸收光谱法 (TROPAC) 调查热带西太平洋微量气体的日变化
  • 批准号:
    501831387
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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表面解吸常压化学电离源的应用基础研究
  • 批准号:
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  • 批准年份:
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  • 资助金额:
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CEDAR: Characterization of Upper Atmospheric Effects of Hurricanes
CEDAR:飓风高层大气影响的特征
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Postdoctoral Fellowship: OCE-PRF: Quantifying the effects of ocean alkalinity enhancement on costal ecosystems and atmospheric carbon dioxide
博士后奖学金:OCE-PRF:量化海洋碱度增强对沿海生态系统和大气二氧化碳的影响
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