Simulation study about the influence of atmospheric stratification on lightning activities
文献类型：期刊论文
| 作者 | Zheng Dong1,2; Zhang Yijun1,3; Lu Weitao1; Ma Ming1; Meng Qing1 |
| 刊名 | Acta meteorologica sinica
 |
| 出版日期 | 2008 |
| 卷号 | 22期号:1页码:78-90 |
| 关键词 | Atmospheric instability parameters Model Hydrometeor Electric structure |
| ISSN号 | 0894-0525 |
| 通讯作者 | Zheng dong(zhd@cams.cma.gov.cn) |
| 英文摘要 | A 2d model about charging and discharging processes in thundercloud is used to simulate three differential atmospheric stratifications resulting in discrepant thunderstorm processes in beijing region. the dynamic and microphysical processes in thunderstorm and their influence on lightning activities are also discussed. the results indicate that ascending velocity and water vapor are the most important factors to influence lightning activities. at the same time, they affect each other and are together controlled by atmospheric stratification. the magnitude of the ascending velocity determines the intensity of storm and the time when the thunderstorm matured. the thunderstorm with strong updrafts can reach a large height in a short time. strong persistent updrafts and sufficient water vapor which help to generate more ice phase hydrometeors that directly influence charging and discharging process will prolong the mature stage of the thunderstorm and thereby enhance lightning activities. though the big density of ice phase hydrometeors can be formed, it is difficult to sustain a long time in the condition of strong updrafts and scant water vapor. under the condition of weak updrafts and sufficient water vapor in the whole levels, it is easy to form warm cloud process in which the ice phase process and lightning activities are weak. the favorable stratification conditions for strong lightning activities are the sufficient vapor in the lower atmosphere, moderate humidity in the mid troposphere, big instability energy and some suitable convective inhibition. through calculating some atmospheric instability parameters, it is indicated that convective instability index 1 smaller than -10 degrees c (negative means instable), convective available potential energy larger than 1000 j kg(-1), convective inhibition larger than 40 j kg(-1), the 700-hpa potential equivalent temperature larger than 340 k and the 35%-85% humidity in the mid troposphere (700-400 hpa) are the advantageous conditions for strong lightning activities. |
| WOS关键词 | THUNDERSTORM ; CONVECTION |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000256360100008 |
| 出版者 | ACTA METEOROLOGICA SINICA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2391024 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zheng Dong |
| 作者单位 | 1.Chinese Acad Meteorol Sci, Lab Lightning Phys & Protect Engn, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng Dong,Zhang Yijun,Lu Weitao,et al. Simulation study about the influence of atmospheric stratification on lightning activities[J]. Acta meteorologica sinica,2008,22(1):78-90. |
| APA | Zheng Dong,Zhang Yijun,Lu Weitao,Ma Ming,&Meng Qing.(2008).Simulation study about the influence of atmospheric stratification on lightning activities.Acta meteorologica sinica,22(1),78-90. |
| MLA | Zheng Dong,et al."Simulation study about the influence of atmospheric stratification on lightning activities".Acta meteorologica sinica 22.1(2008):78-90. |
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来源：中国科学院大学
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