气候变化领域集成服务门户(CCPortal): Synoptic analysis of sea level pressure patterns and Vertically Integrated Moisture Flux Convergence VIMFC during the occurrence of durable and pervasive rainfall in Iran

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DOI	10.1016/j.dynatmoce.2019.02.004
	Synoptic analysis of sea level pressure patterns and Vertically Integrated Moisture Flux Convergence VIMFC during the occurrence of durable and pervasive rainfall in Iran
	Darand M.; Pazhoh F.
发表日期	2019
ISSN	03770265
起始页码	10
结束页码	17
卷号	86
英文摘要	To carry out this research, interpolated data of daily rainfall from Iran's Asfazari data base during 1/1/1979–31/12/2013 is used. The day along with pervasive rainfall considered a day that at least 50% of Iran's territory has received more than 1 mm for at least two consecutive days. Based on mentioned thresholds, 224 days selected for statistical analysis. The sea level pressure data, zonal and meridional wind components and specific humidity with spatial resolution of 0.25*0.25 Gaussian degree in spatial domain of 10 °N to 60 °N and 15 °E to 75 °E obtained from the European Center for Medium range Weather Forecasting (ECMWF) ERA-Interim for selected days. Then on the data matrix of sea level pressure, the cluster analysis by Ward linkage method done and 4 sea level pressure patterns with different configuration of synoptic systems were identified. The findings showed that in the sea level, the interaction between southern thermal low pressure systems (Arabia low pressure) with Europe and Siberia cold immigrant high pressure both by individual and integration and anticyclone circulation of Arab sea from the low level of 1000–500 hPa of troposphere have the most role on occurrence of durable and pervasive rainfall of Iran. The most Vertically Integrated Moisture Flux Convergence in the first layer of troposphere (1000–850 hPa) observed in low height regions, in the second layer of troposphere (775–700 hPa) on Zagros Mountains and in third layer of troposphere (600–500 hPa) is seen in mountains leeward of Iran. Also the results showed that the maximum rainfall cores has the most coordination with Vertically Integrated Moisture Flux Convergence (VIMFC) in the second layer of troposphere (775–700 hPa) on the Zagros heights in the southwest of Iran. © 2019 Elsevier B.V.
英文关键词	Arabian Sea anticyclone; Durability and pervasiveness; Iran; Rainfall
语种	英语
scopus关键词	Cluster analysis; Moisture; Rain; Troposphere; Weather forecasting; Arabian sea; Iran; Low pressure systems; Moisture flux convergences; Sea level pressure; Spatial resolution; Specific humidity; Synoptic analysis; Sea level; anticyclone; geostatistics; interpolation; moisture flux; rainfall; relative humidity; sea level pressure; spatial resolution; synoptic meteorology; troposphere; weather forecasting; Arabian Sea; Indian Ocean; Iran; Zagros
来源期刊	Dynamics of Atmospheres and Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178521
作者单位	Department of Climatology, Faculty of Natural Resources, University of Kurdistan, Sanandaj, Iran; Department of Natural Geography, Faculty of Geographical Sciences, Kharazmi University, Tehran, Iran
推荐引用方式 GB/T 7714	Darand M.,Pazhoh F.. Synoptic analysis of sea level pressure patterns and Vertically Integrated Moisture Flux Convergence VIMFC during the occurrence of durable and pervasive rainfall in Iran[J],2019,86.
APA	Darand M.,&Pazhoh F..(2019).Synoptic analysis of sea level pressure patterns and Vertically Integrated Moisture Flux Convergence VIMFC during the occurrence of durable and pervasive rainfall in Iran.Dynamics of Atmospheres and Oceans,86.
MLA	Darand M.,et al."Synoptic analysis of sea level pressure patterns and Vertically Integrated Moisture Flux Convergence VIMFC during the occurrence of durable and pervasive rainfall in Iran".Dynamics of Atmospheres and Oceans 86(2019).