| DOI: | 10.1007/s11069-020-03977-y
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| 论文题名: | Probing for overshooting as extreme event of thunderstorms |
| 作者: | Chaudhuri S.; Khan F.; Das D.; Mondal P.; Dey S.
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| 刊名: | Natural Hazards
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| ISSN: | 0921030X
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| 出版年: | 2020
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| 卷: | 102, 期:3 | | 起始页码: | 1571
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| 结束页码: | 1588
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| 语种: | 英语
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| 中文关键词: | Overshooting
; Predictability
; Severity
; Stability indices
; Thunderstorm
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| 英文关键词: | boundary layer
; extreme event
; gust
; potential temperature
; Richardson number
; thunderstorm
; wind shear
; India
; Kolkata
; West Bengal
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| 英文摘要: | Thunderstorm overshooting is rare but not an unusual phenomenon in a metropolitan of India, Kolkata (22.57° N; 88.36° E) during the pre-monsoon months (April–May). An attempt is made in this study to identify the important parameters differentiating the thunderstorms in overshooting and non-overshooting categories through data analytics from 2000 to 2015. The present investigation on parametric classification would facilitate in estimating the predictability of thunderstorms with overshooting which subsequently might assist in operational forecast of thunderstorm severity over Kolkata. The altitudes of lifting condensation level (LCL), wind shear, bulk Richardson number (BRN), gust speed, boundary layer characteristics and their correlation with thunderstorm cloud top height (CTH) and also their variation and distribution during overshooting (OTS) and non-overshooting (TS) thunderstorms are analyzed in this study. The result depicts that over Kolkata the intensity of storms during OTS is higher than during TS though the frequency of OTS is less than that of TS. The results further show that the potential temperature (θ), equivalent potential temperature (θe), mixing ratio (es) in the boundary layer, convective available potential energy, convective inhibition energy, BRN and gust speed play significant roles in regulating the CTH during OTS and TS thunderstorms over Kolkata. © 2020, Springer Nature B.V. |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/168425
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| Appears in Collections: | 气候变化与战略
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作者单位: | Department of Atmospheric Sciences, University of Calcutta, 51/2 Hazra Road, Kolkata, 700 019, India
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| Recommended Citation: | |
Chaudhuri S.,Khan F.,Das D.,et al. Probing for overshooting as extreme event of thunderstorms[J]. Natural Hazards,2020-01-01,102(3)
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