Effects of Atmospheric Attenuation on the Lightning Spectrum

doi:10.1029/2021JD035387

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	Effects of Atmospheric Attenuation on the Lightning Spectrum
	Wan, Ruibin 3; Yuan, Ping 3; An, Tingting 3; Liu, Guorong 1; Wang, Xuejuan 2; Wang, Wangsheng 3; Huang, Xin 3; Deng, Hong 3
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2021-11-27
卷号	126 期号:22
关键词	atmospheric attenuation spectrograph response lightning spectrum channel temperature
ISSN号	2169-897X
DOI	10.1029/2021JD035387
英文摘要	Spectrum carries important information reflecting atomic and molecular processes inside a light source. Accurate spectral diagnosis is vital in revealing the microscopic physical mechanism of the lightning discharge process. Spectral correction was applied considering the influence of atmospheric attenuation, grating efficiency, and camera response on the observed spectrum, thereby solving the problems of atmospheric attenuation in long-distance lightning spectrum observations. Based on the restored spectrum, the temperature of the lightning return stroke channel was calculated by the ionic and atomic lines respectively. The result showed that corrected temperature at the initial stage of the return stroke, calculated by the ionic line, could reach up to 40,000 K, which was about 10,000 K higher than the values directly obtained from the observed spectrum. Atmospheric attenuation of the atomic spectral line in the near-infrared band is relatively weak; therefore, atmospheric attenuation was inferred to have a relatively less effect on the channel temperature that was calculated by the atomic spectral lines. This work provided the attenuation ratio of the characteristic lines in lightning spectra with distance, and can used for more precisely quantitative investigation on the physical characteristics of the lightning process. It also has application value for improving the spectral diagnostic techniques on celestial body and other natural luminous process.
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000723100300005
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/149965]
专题	理学院
作者单位	1.Lanzhou Univ Technol, Dept Phys, Lanzhou, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Key Lab Aerosol Cloud Precipitat China Meteorol A, Minist Educ KLME,Collaborat Innovat Ctr Forecast, Key Lab Meteorol Disaster,Joint Int Res Lab Clima, Nanjing, Peoples R China 3.Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou, Peoples R China;
推荐引用方式 GB/T 7714	Wan, Ruibin,Yuan, Ping,An, Tingting,et al. Effects of Atmospheric Attenuation on the Lightning Spectrum[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2021,126(22).
APA	Wan, Ruibin.,Yuan, Ping.,An, Tingting.,Liu, Guorong.,Wang, Xuejuan.,...&Deng, Hong.(2021).Effects of Atmospheric Attenuation on the Lightning Spectrum.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(22).
MLA	Wan, Ruibin,et al."Effects of Atmospheric Attenuation on the Lightning Spectrum".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.22(2021).