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DOI10.1029/2019GL086825
Aerosol Effects on Lightning Characteristics: A Comparison of Polluted and Clean Regimes
Liu, Y.1,2; Guha, A.3; Said, R.4; Williams, E.1; Lapierre, J.5; Stock, M.5; Heckman, S.5
2020-05-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2020
卷号47期号:9
文章类型Article
语种英语
国家USA; Peoples R China; India
英文摘要

Oceanic lightning can be a sensitive indicator of aerosol effects on lightning characteristics as thermodynamic contrast is indistinct over adjacent oceanic regions. The study presents discernable aerosol impacts on lightning characteristics by analyzing 2 years (2017-2018) of intracloud (IC) and cloud-to-ground (CG) lightning data from Earth Networks Total Lightning Network over two key regions in southern South China Sea. Mean stroke density, IC/CG ratio, +IC fraction, and +CG fraction in polluted conditions are respectively 3.7, 2, 1.2, and 5.8-fold larger than unpolluted counterparts. Total stroke contrast is further confirmed with the GLD360 network. Thermodynamic parameters conversely support slightly stronger convection over clean ocean. Clear evidence shows cloud droplet size diminishes with added aerosol. Aerosol invigorates more frequent and robust mixed-phase development, endowing maritime convection with continental characteristics. Modifications in the charge reversal temperature and lower and upper positive charge regions are speculated on as means for stimulating more positive ICs and CGs.


英文关键词lightning aerosol effects intracloud lightning cloud-to-ground lightning thermodynamic effects
领域气候变化
收录类别SCI-E
WOS记录号WOS:000536639500026
WOS关键词THUNDERSTORM ELECTRIFICATION ; PERFORMANCE-CHARACTERISTICS ; CONVECTIVE CLOUDS ; URBAN AREAS ; PRECIPITATION ; MICROPHYSICS ; ENHANCEMENT ; CONTRAST ; DENSITY ; HOUSTON
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/279922
专题气候变化
作者单位1.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA;
2.Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai, Peoples R China;
3.Tripura Univ, Dept Phys, Agartala, Tripura, India;
4.Vaisala Inc, Louisville, CO USA;
5.Earth Networks, Germantown, MD USA
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GB/T 7714
Liu, Y.,Guha, A.,Said, R.,et al. Aerosol Effects on Lightning Characteristics: A Comparison of Polluted and Clean Regimes[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(9).
APA Liu, Y..,Guha, A..,Said, R..,Williams, E..,Lapierre, J..,...&Heckman, S..(2020).Aerosol Effects on Lightning Characteristics: A Comparison of Polluted and Clean Regimes.GEOPHYSICAL RESEARCH LETTERS,47(9).
MLA Liu, Y.,et al."Aerosol Effects on Lightning Characteristics: A Comparison of Polluted and Clean Regimes".GEOPHYSICAL RESEARCH LETTERS 47.9(2020).
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