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DOI | 10.1016/j.atmosres.2018.10.011 |
Improved lightning model: Application to discuss the characteristics of upward lightning | |
Tan, Yongbo; Zheng, Tianxue; Shi, Zheng | |
2019-03-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 217页码:63-72 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | A stochastic discharge parameterization scheme of upward lightning is presented and embedded into an existing fine resolution two-dimensional thundercloud electrification and lightning model. At present, our lightning model can simulate not only intra-cloud (IC) lightning and cloud-to-ground (CG) lightning but also upward lightning. By this improved model, 139 upward flashes originating from the tall structures were obtained. Out of these upward flashes, 67 cases occur without any nearby preceding lightning discharges (called self-initiated upward flashes), whereas 72 cases are triggered by the preceding lightning discharges (called nearby-lightning triggered upward flashes). The relationship between the initiation of self-initiated upward flashes and thundercloud electrical environment parameters is discussed. The results show that the initiation of self-initiated upward flashes is related to the weighted average of the lower charge heights (H) and the average of the lower charge density (D). As D increases, the critical H increases. In addition, the reason for IC lightning or upward lightning triggering upward lightning is investigated. IC lightning discharges or upward lightning discharges neutralize the main negative charge region in the cloud and enhance the influence of the lower positive charge region on the ground electric field. |
英文关键词 | Upward lightning parameterization scheme Self-initiated upward lightning Nearby-lightning-triggered upward lightning |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452931100007 |
WOS关键词 | ELECTRIC-FIELD ; SPACE-CHARGE ; CORONA DISCHARGE ; FLASHES ; CLOUD ; ELECTRIFICATION ; PARAMETERS ; PROPAGATION ; SIMULATION ; INITIATION |
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/38304 |
专题 | 地球科学 |
作者单位 | Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change ILCEC, Minist Educ KLME,Key Lab Aerosol Cloud Precipitat, CIC FEMD,Key Lab Meteorol Disaster,Meteorol Adm, Nanjing 210044, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Tan, Yongbo,Zheng, Tianxue,Shi, Zheng. Improved lightning model: Application to discuss the characteristics of upward lightning[J]. ATMOSPHERIC RESEARCH,2019,217:63-72. |
APA | Tan, Yongbo,Zheng, Tianxue,&Shi, Zheng.(2019).Improved lightning model: Application to discuss the characteristics of upward lightning.ATMOSPHERIC RESEARCH,217,63-72. |
MLA | Tan, Yongbo,et al."Improved lightning model: Application to discuss the characteristics of upward lightning".ATMOSPHERIC RESEARCH 217(2019):63-72. |
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