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DOI	10.1016/j.atmosres.2021.105503
	Synoptic patterns and mesoscale precursors of Italian tornadoes
	Bagaglini L.; Ingrosso R.; Miglietta M.M.
发表日期	2021
ISSN	0169-8095
卷号	253
英文摘要	An analysis of synoptic patterns and mesoscale precursors is produced for Italian tornadoes for the period 2000–2018. Anomaly maps of different parameters are extracted from ERA-5 reanalysis. To highlight typical large-scale configurations, a clustering analysis is applied to define different regional clusters, representative of areas affected by a large number of tornadoes. The analysis shows that: a)Significant anomalies of synoptic variables and mesoscale precursors are generally present over and nearby the region where tornadoes occur, in particular for significant tornadoes (EF2+). b) Differences among clusters suggest that the environmental conditions favourable to tornado development differ between southern and northern Italian regions. In the Ionian region and Sicily, tornadoes occur when the northern end of a warm/moist tongue is advected toward an area of strong low-level shear. In the northern regions, high-shear cold air intrusions from continental Europe, combined with the high humidity content due to intense evaporation from the Mediterranean during summer, favour supercell triggering. c) tornadoes in southern regions are characterised by the highest anomaly values in wind shear, storm relative helicity and CAPE; d) significant SST positive anomalies are observed for southern tornadoes. © 2021 Elsevier B.V.
英文关键词	Anomalies; Clustering; ERA-5; Precursors; Sea surface temperature; Statistical analysis; Synoptic scale; Tornado
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/236838
作者单位	ISAC-CNR, Istituto di Scienze dell'Atmosfera e del Clima - Consiglio Nazionale delle Ricerche, Roma, Italy; Department of Earth and Atmospheric Sciences, University of Quebec in Montreal (UQAM), Montreal, QC, Canada; ISAC-CNR, Istituto di Scienze dell'Atmosfera e del Clima - Consiglio Nazionale delle Ricerche, Lecce/Padua, Italy
推荐引用方式 GB/T 7714	Bagaglini L.,Ingrosso R.,Miglietta M.M.. Synoptic patterns and mesoscale precursors of Italian tornadoes[J],2021,253.
APA	Bagaglini L.,Ingrosso R.,&Miglietta M.M..(2021).Synoptic patterns and mesoscale precursors of Italian tornadoes.Atmospheric Research,253.
MLA	Bagaglini L.,et al."Synoptic patterns and mesoscale precursors of Italian tornadoes".Atmospheric Research 253(2021).