Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025799 |
Terrestrial gamma ray flashes due to particle acceleration in tropical storm systems | |
Roberts, O. J.1; Fitzpatrick, G.1,2; Priftis, G.3; Bedka, K.4; Chronis, T.3; McBreen, S.1; Briggs, M. S.2; Cramer, E.2; Mailyan, B.2; Stanbro, M.2 | |
2017-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Ireland; USA |
英文摘要 | Terrestrial gamma ray flashes (TGFs) are submillisecond flashes of energetic radiation that are believed to emanate from intracloud lightning inside thunderstorms. This emission can be detected hundreds of kilometers from the source by space-based observatories such as the Fermi Gamma-ray Space Telescope (Fermi). The location of the TGF-producing storms can be determined using very low frequency (VLF) radio measurements made simultaneously with the Fermi detection, allowing additional insight into the mechanisms which produce these phenomena. In this paper, we report 37 TGFs originating from tropical storm systems for the first time. Previous studies to gain insight into how tropical cyclones formed and how destructive they can be include the investigation of lightning flash rates and their dependence on storm evolution. We find TGFs to emanate from a broad range of distances from the storm centers. In hurricanes and severe tropical cyclones, the TGFs are observed to occur predominately from the outer rainbands. A majority of our sample also show TGFs occurring during the strengthening phase of the encompassing storm system. These results verify that TGF production closely follows when and where lightning predominately occurs in cyclones. The intrinsic characteristics of these TGFs were not found to differ from other TGFs reported in larger samples. We also find that some TGF-producing storm cells in tropical storm systems far removed from land have a low number of WWLLN sferics. Although not unique to tropical cyclones, this TGF/sferic ratio may imply a high efficiency for the lightning in these storms to generate TGFs. |
英文关键词 | TGFs tropical storms gamma ray WWLLN ENTLN |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399655200013 |
WOS关键词 | GLOBAL ELECTRIC-CIRCUIT ; LOCATION NETWORK WWLLN ; SFERIC ARRAY LASA ; LIGHTNING-LOCATION ; BURST MONITOR ; HURRICANE ; THUNDERSTORMS ; EMISSIONS ; CYCLONES ; SPACE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32423 |
专题 | 气候变化 |
作者单位 | 1.Univ Coll Dublin, Sch Phys, Belfield, Ireland; 2.Univ Alabama, CSPAR, Huntsville, AL 35899 USA; 3.Univ Alabama, ESSC, Huntsville, AL 35899 USA; 4.NASA, Langley Res Ctr, Hampton, VA 23665 USA |
推荐引用方式 GB/T 7714 | Roberts, O. J.,Fitzpatrick, G.,Priftis, G.,et al. Terrestrial gamma ray flashes due to particle acceleration in tropical storm systems[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(6). |
APA | Roberts, O. J..,Fitzpatrick, G..,Priftis, G..,Bedka, K..,Chronis, T..,...&Stanbro, M..(2017).Terrestrial gamma ray flashes due to particle acceleration in tropical storm systems.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(6). |
MLA | Roberts, O. J.,et al."Terrestrial gamma ray flashes due to particle acceleration in tropical storm systems".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.6(2017). |
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