Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s007040170038 |
A severe autumn storm over the middle-east: synoptic and mesoscale convection analysis | |
Dayan, U; Ziv, B; Margalit, A; Morin, E; Sharon, D | |
通讯作者 | Dayan, U |
来源期刊 | THEORETICAL AND APPLIED CLIMATOLOGY |
ISSN | 0177-798X |
出版年 | 2001 |
卷号 | 69期号:1-2页码:103-122 |
英文摘要 | At times, a pronounced trough of low barometric pressure extends from equatorial Africa northward, over the Red Sea and the eastern Mediterranean countries, i.e., the Red Sea Trough. The associated weather is usually hot and dry, and consequently the atmosphere becomes conditionally unstable. In cases in which additional moisture is supplied and dynamic conditions become supportive, as the case analyzed here, intense thunderstorms occur, with extreme rain rates, hail and floods. The storm herein analyzed caused extensive damage both in casualties and property and evolved in two main consecutive phases: In the first a Mesoscale Convective System that moved from Sinai northward over Israel dominated, and in the second deep convection was organized mainly along a cold front. Data analysis indicates several synoptic-scale factors that had a supportive effect on the storm formation and intensification: Conditional instability established by the Red Sea trough, mid-level moisture transport from Northern Africa, and upper-level divergence imparted by both polar and subtropical jet streams over the Middle-East. Mesoscale features were further investigated by means of a hydro-meteorological observational analysis with high spatio-temporal resolution using raingauge and radar data, and satellite imagery. It is shown that local factors, particularly topographic effects, play a major role in the evolution, intensity and spatial organization of the convective activity. Our findings support results of a numerical study of another autumn rainstorm associated with the Red Sea trough. Sn the present case we identify an additional contributing factor, i.e., a mid-latitude upper-level trough that further intensified the storm as it was approaching the Middle-East. |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000169517900008 |
WOS关键词 | NEGEV DESERT ; SEA ; ISRAEL ; FLOOD |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
来源机构 | Hebrew University of Jerusalem |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/141834 |
作者单位 | (1)Hebrew Univ Jerusalem, Dept Geog, IL-91905 Jerusalem, Israel;(2)Open Univ Israel, Tel Aviv, Israel;(3)Hebrew Univ Jerusalem, Inst Earth Sci, IL-91905 Jerusalem, Israel |
推荐引用方式 GB/T 7714 | Dayan, U,Ziv, B,Margalit, A,et al. A severe autumn storm over the middle-east: synoptic and mesoscale convection analysis[J]. Hebrew University of Jerusalem,2001,69(1-2):103-122. |
APA | Dayan, U,Ziv, B,Margalit, A,Morin, E,&Sharon, D.(2001).A severe autumn storm over the middle-east: synoptic and mesoscale convection analysis.THEORETICAL AND APPLIED CLIMATOLOGY,69(1-2),103-122. |
MLA | Dayan, U,et al."A severe autumn storm over the middle-east: synoptic and mesoscale convection analysis".THEORETICAL AND APPLIED CLIMATOLOGY 69.1-2(2001):103-122. |
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