气候变化领域集成服务门户(CCPortal): Synoptic analysis of unexampled super-heavy rainfall on April 1, 2019, in west of Iran

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DOI	10.1007/s11069-020-04232-0
	Synoptic analysis of unexampled super-heavy rainfall on April 1, 2019, in west of Iran
	Ghavidel Y.; Jafari Hombari F.
发表日期	2020
ISSN	0921030X
起始页码	1567
结束页码	1580
卷号	104 期号:2
英文摘要	The aim of this study is to analyze the synoptic and analyzing the mechanisms of flood occurrence on April 1, 2019, in the western half of Iran. In order to statistically analyze super-heavy precipitation in western Iran, the daily meteorological data from April 2019 for 13 synoptic stations in Kermanshah, Hamadan, and Lorestan Provinces were received and used by the Meteorological Organization. The results show that on the peak day of precipitation in the western half of the country, most stations recorded more than 100 mm of precipitation, the highest of which, 127 mm, occurred at Nahavand station. The arrangement of sea level pressure patterns also indicates the existence of severe pressure gradients between the low pressure in northern Saudi Arabia and western Iran and the high pressure of Siberian and European cold cores, which have created contradictory weather conditions and a strong front at sea level. Also, in the middle and upper levels of the troposphere, with the penetration of cold air flow and cyclonic from Russia and its settlement in West Asia and the region in the form of cutoff low-pressure blocking, severe positive vorticity and divergent and humid ascent flows at all analyzed levels in the western half of the country have been created. Humidity advection maps of 500–1000 hPa levels show that at the 850 and 1000 hPa levels a humidity supply is provided from various sources in the Gulf of Aden, Red Sea, and Mediterranean Sea. But at levels of 500 and 700 hPa, only the Mediterranean Sea plays a key role in supplying and injecting humidity. © 2020, Springer Nature B.V.
关键词	Climate hazard Flood Heavy precipitation Synoptic analysis West of Iran
英文关键词	climate effect; flood damage; flood frequency; natural hazard; precipitation intensity; rainfall; synoptic meteorology; vorticity; Iran
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205705
作者单位	Department of Physical Geography, Tarbiat Modares University, Tehran, Iran; Department of Physical Geography, Shahid Beheshti University, Tehran, Iran
推荐引用方式 GB/T 7714	Ghavidel Y.,Jafari Hombari F.. Synoptic analysis of unexampled super-heavy rainfall on April 1, 2019, in west of Iran[J],2020,104(2).
APA	Ghavidel Y.,&Jafari Hombari F..(2020).Synoptic analysis of unexampled super-heavy rainfall on April 1, 2019, in west of Iran.Natural Hazards,104(2).
MLA	Ghavidel Y.,et al."Synoptic analysis of unexampled super-heavy rainfall on April 1, 2019, in west of Iran".Natural Hazards 104.2(2020).