气候变化领域集成服务门户(CCPortal): Synoptic patterns of severe hailstorm events in Spain

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DOI	10.1016/j.atmosres.2020.105397
	Synoptic patterns of severe hailstorm events in Spain
	de Pablo Dávila F.; Soriano L.J.R.; Alonso C.J.; García M.M.; Martín J.R.
发表日期	2021
ISSN	0169-8095
卷号	250
英文摘要	A study of severe hailstorm (with size ≥3 cm) over Spain has been conducted using 8 years (2012–2019) of data. The 73 events of heavy hail selected were classified using the moisture flux at the 850 hPa pressure level (qv)850 and the lifted index (LI) as variables and a principal component analysis, coupled with a K-means clustering, as statistical technique. The application of this procedure provided four groups with their respective final cluster centre. We studied four cases, selected for being close to each final cluster centre. It was found that high values of low levels moisture flux (~ 89 g m/kg s on the average) are accompanied by static instability (SBCAPE ~600 j/kg and average LI ~ −4). The temperature values exceeded 20 °C at the 850 hPa pressure level and range between −10 °C and − 20 °C at the 500 hPa pressure level. The most typical configuration corresponded to geopotential and thermal trough at mean levels of the troposphere and low pressure at low levels. Likewise, high values of precipitable water (> 25 kg/m2) have been detected and the presence of storm relative helicity and shear was moderate or strong in all cases. © 2020 Elsevier B.V.
英文关键词	Cluster analysis; Severe hailstorms; Spain; Stability index
语种	英语
scopus关键词	Moisture; Precipitation (meteorology); Storms; Geopotentials; Low pressures; Moisture fluxes; Precipitable water; Pressure level; Static instability; Statistical techniques; Temperature values; K-means clustering; atmospheric moisture; atmospheric pressure; cluster analysis; hail; principal component analysis; severe weather; storm; synoptic meteorology; Spain
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162047
作者单位	Departamento de Física Fundamental, Universidad de Salamanca, Salamanca, Spain; Agencia Estatal de Meteorología, (AEMet), Málaga, Spain; Agencia Estatal de Meteorología, (AEMet), Valladolid, Spain
推荐引用方式 GB/T 7714	de Pablo Dávila F.,Soriano L.J.R.,Alonso C.J.,et al. Synoptic patterns of severe hailstorm events in Spain[J],2021,250.
APA	de Pablo Dávila F.,Soriano L.J.R.,Alonso C.J.,García M.M.,&Martín J.R..(2021).Synoptic patterns of severe hailstorm events in Spain.Atmospheric Research,250.
MLA	de Pablo Dávila F.,et al."Synoptic patterns of severe hailstorm events in Spain".Atmospheric Research 250(2021).