DOI: 10.1002/joc.5343
论文题名: Sounding-derived parameters associated with tornadic storms in Catalonia
作者: Rodríguez O. ; Bech J.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 5 起始页码: 2400
结束页码: 2414
语种: 英语
英文关键词: Europe
; Mediterranean
; radiosonde
; thunderstorm
; tornado
; upper air conditions
; waterspout
Scopus关键词: Economics
; Radiosondes
; Storms
; Thunderstorms
; Tornadoes
; Convective weather
; Europe
; Mediterranean
; Potential capacity
; Situational awareness
; Tornadic thunderstorms
; Waterspout
; Western Mediterranean basin
; Weather forecasting
英文摘要: Catalonia, a southern Europe coastal region in the western Mediterranean basin, is regularly affected by severe local storms which every year produce an average of 5 tornadoes and 12 waterspouts, based on data recorded from 2000 to 2016. Despite these tornadoes mostly being weak – not exceeding EF1 on the enhanced Fujita (EF) damage intensity scale – they occasionally reach stronger intensities, posing an evident threat to population and socio-economic activity, particularly in densely populated coastal conurbations such as Tarragona or Barcelona. This study provides analysis of upper air conditions that favour the formation of tornadic storms in the region, considering five different stations in Spain and France to build a database of 333 soundings which included 49 tornadic soundings, 104 waterspout soundings (WAT) as well as non-tornadic thunderstorms and dry period soundings. For each one, 12 different parameters were calculated and analysed to test their potential capacity to discriminate non-tornadic from tornadic environments and also to assess the feasibility of stratifying tornado intensity (EF0, and EF1 or stronger, on the EF scale). The results indicate that storm-relative helicity for the layer 0–3 km, with a threshold value of 150 m2 s−2, wind shear for the same layer, with a threshold of 15 m s−1, and composite parameters such as the supercell composite parameter with a threshold of 1.2 and universal tornadic index with a threshold of 0.3 are all useful to distinguish between non-tornadic thunderstorms and EF1 or stronger tornadic events. These results contribute to a better description of the climatology of upper air conditions that favour tornadic storms in the region and can also help operational weather forecasting and surveillance tasks, thus increasing situational awareness in severe convective weather events. © 2017 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117032
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Applied Physics – Meteorology, University of Barcelona, Spain
Recommended Citation:
Rodríguez O.,Bech J.. Sounding-derived parameters associated with tornadic storms in Catalonia[J]. International Journal of Climatology,2018-01-01,38(5)