气候变化领域集成服务门户(CCPortal): Natural Sources of Ionization and Their Impact on Atmospheric Electricity

CCPortal

DOI	10.1029/2020GL088619
	Natural Sources of Ionization and Their Impact on Atmospheric Electricity
	Golubenko K.; Rozanov E.; Mironova I.; Karagodin A.; Usoskin I.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	We present a study of atmospheric electricity using the chemistry-climate model SOCOL considering ionization by solar energetic particles during an extreme solar proton event (SPE), galactic cosmic rays (GCR), and terrestrial radon (Rn-222). We calculate the global distribution of the atmospheric conductivity and fair-weather downward current density (Jz) using atmospheric ionization rates from all sources. We found that Jz is enhanced (by more than 3.5 pA/m2) in radon source and polar regions. Contribution of Rn-222 is essential at middle and low latitudes/altitudes where GCR-induced air conductivity is reduced. The model results are in good agreement with the available observations. We also studied the effects of an extreme SPE, corresponding to the 774 AD event, on the atmospheric electricity and found that it would lead to a large increase of Jz on a global scale. The magnitude of the effects depends on location and can exceed background value more than 30 times over the high latitudes (a conservative upper bound). Such an assessment has been performed for the first time. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric electricity; Atmospheric ionization; Climate models; Cosmology; Impact ionization; Radon; Air conductivities; Atmospheric conductivity; Background value; Chemistry-climate models; Galactic cosmic rays; Global distribution; Solar energetic particles; Solar proton events; Atmospheric chemistry; atmospheric convection; atmospheric electricity; cosmic ray; electrical conductivity; ionization; polar region; radon
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170224
作者单位	Space Physics and Astronomy Unit, University of Oulu, Oulu, Finland; Department of Physics of Earth, Faculty of Physics, St. Petersburg State University, St. Petersburg, Russian Federation; PMOD/WRC and IAC ETHZ, Davos Dorf, Switzerland; Western Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Waves Propagation, Russian Academy of Sciences, Kaliningrad, Russian Federation; Sodankylä Geophysical Observatory, University of Oulu, Oulu, Finland
推荐引用方式 GB/T 7714	Golubenko K.,Rozanov E.,Mironova I.,et al. Natural Sources of Ionization and Their Impact on Atmospheric Electricity[J],2020,47(12).
APA	Golubenko K.,Rozanov E.,Mironova I.,Karagodin A.,&Usoskin I..(2020).Natural Sources of Ionization and Their Impact on Atmospheric Electricity.Geophysical Research Letters,47(12).
MLA	Golubenko K.,et al."Natural Sources of Ionization and Their Impact on Atmospheric Electricity".Geophysical Research Letters 47.12(2020).