Numerical simulation of the relationship between electrification and microphysics in the prelightning stage of thunderstorms
文献类型：期刊论文
| 作者 | Hou, Tuanjie1; Lei, Hengchi2; Hu, Zhaoxia2 |
| 刊名 | Atmospheric research
 |
| 出版日期 | 2009-02-01 |
| 卷号 | 91期号:2-4页码:281-291 |
| 关键词 | Thunderstorm Charge structure Supercooled raindrops |
| ISSN号 | 0169-8095 |
| DOI | 10.1016/j.atmosres.2008.04.009 |
| 通讯作者 | Lei, hengchi(leihc@mail.iap.ac.cn) |
| 英文摘要 | To further investigate the influence of cloud base temperature, updraft velocity and precipitation particle constitution on cloud electrification, five thunderstorms in various regions of china were simulated by using the three-dimensional compressible hailstorm numerical model including inductive and non-inductive charging mechanisms. the results indicate that changes of cloud base temperature have an influence on the initial electrification. comparison of the above cases shows that in the case of warm cloud base and moderate updraft velocity (<20 m s(- 1)), active electrification occurred below the -10 degrees c level before moving upward to the -20 degrees c level. in contrast, when cloud base is cold and updraft velocity is intensive, the main charging region is at the -20 degrees c or even higher level. in that case, the vertical extent of the main negative charge region becomes larger with the increase of cloud base temperature. apart from the main dipolar or tripolar charge structure, some smaller charge regionswith relatively high values of charge density may also appear. frozen drops, originating mainly from supercooled raindrops, mainly get electrified through charging interactions with snow at or below the -20 degrees c level. they are responsible for the negative charge region near the melting level at the initial stage of precipitation if there is a large supercooled raindrop content. non-inducdive charging during hail-snow collisions is rather weak. resulting in the charge density on hail of no more than -0.01 nc m(-3). (c) 2008 elsevier b.v. all rights reserved. |
| WOS关键词 | MODEL ; CHARGES ; GRAUPEL ; REGIONS ; STORM ; HAIL |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000263193900021 |
| 出版者 | ELSEVIER SCIENCE INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2404289 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Lei, Hengchi |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, Lab Cloud Precipitat Phys & Severe Storms, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou, Tuanjie,Lei, Hengchi,Hu, Zhaoxia. Numerical simulation of the relationship between electrification and microphysics in the prelightning stage of thunderstorms[J]. Atmospheric research,2009,91(2-4):281-291. |
| APA | Hou, Tuanjie,Lei, Hengchi,&Hu, Zhaoxia.(2009).Numerical simulation of the relationship between electrification and microphysics in the prelightning stage of thunderstorms.Atmospheric research,91(2-4),281-291. |
| MLA | Hou, Tuanjie,et al."Numerical simulation of the relationship between electrification and microphysics in the prelightning stage of thunderstorms".Atmospheric research 91.2-4(2009):281-291. |
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来源：中国科学院大学
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