| DOI: | 10.1016/j.atmosres.2019.01.026
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| Scopus记录号: | 2-s2.0-85060867984
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| 论文题名: | The climatology of severe convective storms in Tehran |
| 作者: | Firouzabadi M.; Mirzaei M.; Mohebalhojeh A.R.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2019
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| 卷: | 221 | | 起始页码: | 34
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| 结束页码: | 45
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| 语种: | 英语
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| 英文关键词: | Annual frequency
; CAPE
; Climatology
; Eady growth rate
; Severe convective storm
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| Scopus关键词: | Climatology
; Stability
; Wind
; Annual frequency
; CAPE
; Climatological analysis
; Convective storms
; Devastating effects
; Diurnal distributions
; Maximum wind speed
; Stability indices
; Storms
; annual variation
; climatology
; convective cloud
; diurnal variation
; frequency analysis
; growth rate
; seasonal variation
; storm
; Iran
; Tehran [Iran]
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| 英文摘要: | The severe convective storm (SCS) events that affect Tehran during spring and early summer have potential to cause devastating effects. To study SCSs in Tehran, a climatological analysis is carried out using surface data of Tehran's Mehrabad station from 1961 to 2015 and the NCEP/NCAR reanalysis data to compute the large-scale and the local stability indices. Based on the maximum wind speed, the events are classified into three categories consisting of convective storm (CS), severe convective storm (SCS) and extremely severe convective storm (ESCS). The annual frequency of occurrence of all three categories exhibit decreasing trends during the period of study. Late spring and early summer (April to June) are the favorite times for the SCS and ESCS, and the whole spring is for CS events. In diurnal distribution, for the CS and SCS, the peak occurs at 12–15 UTC. Generally, in response to diurnal surface heating, CS events tend to develop during early- and mid-afternoon, and SCS events during late afternoon. For the months of April to June, while the large-scale stability indices point to a positive trend, no clear trend can be inferred from the examination of local stability indices. While a partial explanation for the decreasing trend of the ESCS is provided based on the large-scale stability indices and the negative trend in the frequency of simultaneous occurrence of the local stability indices, it is likely that the decreasing trends observed for the convective storms are also due to the local urban effects. © 2019 Elsevier B.V. |
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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/122292
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Institute of Geophysics, University of Tehran, Tehran, Iran
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| Recommended Citation: | |
Firouzabadi M.,Mirzaei M.,Mohebalhojeh A.R.. The climatology of severe convective storms in Tehran[J]. Atmospheric Research,2019-01-01,221
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