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Lightning response during Forbush Decrease in the tropics and subtropics
Wu, Qiong1,2; Li, Hui1,3; Wang, Chi1
Department空间科学部
Source PublicationJOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
2019
Volume195Pages:105134
DOI10.1016/j.jastp.2019.105134
ISSN1364-6826
Language英语
KeywordForbush Decrease Galactic cosmic ray Lightning
AbstractGalactic cosmic rays (GCRs), modulated by the heliospheric magnetic field (HMF), are speculated to provide a possible link between solar activities and the earth's lightning variation. To test this hypothesis, we investigate the correlation between the sudden decrease of GCR in a few hours to one day, known as Forbush Decrease (FD), and the lightning incidence in the tropics and subtropics. During the operating period of the TRMM Satellite, 28 FD events are identified with their decrease amplitudes (DAs) greater than 4%. For a typical FD event occurred on January 10, 2002, the daily cosmic ray (CR) intensity presents an intense decline from 5830.33 counts/min to 5675.96 counts/min in one day. Correspondingly, the daily lightning count decreases right after the FD's onset without any obvious time delay, specifically from 3474 day(-1) to 672 day(-1) in one day, and reaches its minimum of 355 day-1 another day later. Based on the superposed epoch analysis (SEA), similar statistical correlation is further confirmed. On average, the adjusted daily lightning anomaly decreases from 0.33 to -0.31 in three days after the FD's onset. The result of the Monte Carlo test indicates that such positive relevance between the CR intensity and the lightning incidence during a FD event is statistically significant.
Indexed BySCI ; EI
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7257
Collection空间科学部
Affiliation1.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China;
2.University of Chinese Academy of Sciences, Beijing, China;
3.School of Astronomy and Space Science, University of Chinese Academy
Recommended Citation
GB/T 7714
Wu, Qiong,Li, Hui,Wang, Chi. Lightning response during Forbush Decrease in the tropics and subtropics[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2019,195:105134.
APA Wu, Qiong,Li, Hui,&Wang, Chi.(2019).Lightning response during Forbush Decrease in the tropics and subtropics.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,195,105134.
MLA Wu, Qiong,et al."Lightning response during Forbush Decrease in the tropics and subtropics".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 195(2019):105134.
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