气候变化领域集成服务门户(CCPortal): Model simulations of chemical effects of sprites in relation with observed HO2 enhancements over sprite-producing thunderstorms

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DOI	10.5194/acp-21-7579-2021
	Model simulations of chemical effects of sprites in relation with observed HO2 enhancements over sprite-producing thunderstorms
	Winkler H.; Yamada T.; Kasai Y.; Berger U.; Notholt J.
发表日期	2021
ISSN	1680-7316
起始页码	7579
结束页码	7596
卷号	21 期号:10
英文摘要	Recently, measurements by the Superconducting Submillimeter-Wave Limb Emission Sounder (SMILES) satellite instrument have been presented which indicate an increase in mesospheric HO2 above sprite-producing thunderstorms. The aim of this paper is to compare these observations to model simulations of chemical sprite effects. A plasma chemistry model in combination with a vertical transport module was used to simulate the impact of a streamer discharge in the altitude range 70 80 km, corresponding to one of the observed sprite events. Additionally, a horizontal transport and dispersion model was used to simulate advection and expansion of the sprite air masses. The model simulations predict a production of hydrogen radicals mainly due to reactions of proton hydrates formed after the electrical discharge. The net effect is a conversion of water molecules into HCOH. This leads to increasing HO2 concentrations a few hours after the electric breakdown. Due to the modelled long-lasting increase in HO2 after a sprite discharge, an accumulation of HO2 produced by several sprites appears possible. However, the number of sprites needed to explain the observed HO2 enhancements is unrealistically large. At least for the lower measurement tangent heights, the production mechanism of HO2 predicted by the model might contribute to the observed enhancements. © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; atmospheric electricity; chemical composition; computer simulation; concentration (composition); mesosphere; model test; numerical model; plasma; radical; sprite; superconductivity; thunderstorm
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246880
作者单位	Institute of Environmental Physics, University of Bremen, Bremen, Germany; Terahertz Technology Research Center, National Institute of Information and Communications Technology, Tokyo, Japan; Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, Tokyo, Japan; Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany
推荐引用方式 GB/T 7714	Winkler H.,Yamada T.,Kasai Y.,et al. Model simulations of chemical effects of sprites in relation with observed HO2 enhancements over sprite-producing thunderstorms[J],2021,21(10).
APA	Winkler H.,Yamada T.,Kasai Y.,Berger U.,&Notholt J..(2021).Model simulations of chemical effects of sprites in relation with observed HO2 enhancements over sprite-producing thunderstorms.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(10).
MLA	Winkler H.,et al."Model simulations of chemical effects of sprites in relation with observed HO2 enhancements over sprite-producing thunderstorms".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.10(2021).