The Lightning Jump Algorithm for Nowcasting Convective Rainfall in Catalonia

Farnell, Carme; Rigo, Tomeu

doi:10.3390/atmos11040397

Cited by 10 publications

(4 citation statements)

References 59 publications

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“…The strongest correlation has been found between lightning jump and hail occurrence. Some heavy rainfall events induced by less well‐developed thunderstorms do not produce significant amounts of lightning (Farnell & Rigo, 2020). An added problem is the splitting and merging of the cells, so the automation of lightning jump detection is a challenging task.…”

Section: Evolution Of Components For Nowcasting In Europe Towards 2030mentioning

confidence: 99%

Towards nowcasting in Europe in 2030

Bojinski,

Blaauboer,

Calbet

et al. 2023

Meteorological Applications

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The increasing impact of severe weather over Europe on lives and weather‐sensitive economies can be mitigated by accurate 0–6 h forecasts (nowcasts), supporting a vital ‘last line of defence’ for civil protection and many other applications. Recognizing lack of skill in some complex situations, often at convective and local sub‐kilometre scales and associated with rare events, we identify seven recommendations with the aim to improve nowcasting in Europe by the national meteorological and hydrological services (NMHSs) by 2030. These recommendations are based on a review of user needs, the state of the observing system, techniques based on observations and high‐resolution numerical weather models, as well as tools, data and infrastructure supporting the nowcasting community in Europe. Denser and more accurate observations are necessary particularly in the boundary layer to better characterize the ingredients of severe storms. A key driver for improvement is next‐generation European satellite data becoming available as of 2023. Seamless ensemble prediction methods to produce enhanced weather forecasts with 0–24 h lead times and probabilistic products require further development. Such products need to be understood and interpreted by skilled forecasters operating in an evolving forecasting context. We argue that stronger co‐development and collaboration between providers and users of nowcasting‐relevant data and information are key ingredients for progress. We recommend establishing pan‐European nowcasting consortia, better exchange of data, common development platforms and common verification approaches as key elements for progressing nowcasting in Europe in this decade.

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Section: Evolution Of Components For Nowcasting In Europe Towards 2030mentioning

confidence: 99%

Towards nowcasting in Europe in 2030

Bojinski,

Blaauboer,

Calbet

et al. 2023

Meteorological Applications

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“…Strong correlations between mountain ranges and enhanced lightning activity (in comparison to lightning intensity in surrounding lowlands) are noted in numerous studies globally (Etherington and Perry, 2017;Feudale and Manzato, 2014;Mushtaq et al, 2018;Vogt, 2014;Vogt andHodanish, 2014, 2016;Xia et al, 2015). More analytical information can be obtained by attributing a mean slope or elevation value to each grid square (Galanaki et al, 2015) and choosing appropriate statistical methods to establish correlation.…”

Section: Lightning Flash Density and Topographymentioning

confidence: 99%

Review article: A comprehensive review of datasets and methodologies employed to produce thunderstorm climatologies

Hayward

Whitworth

Pepin

et al. 2020

Nat. Hazards Earth Syst. Sci.

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Abstract. Thunderstorm and lightning climatological research is conducted with a view to increasing knowledge about the distribution of thunderstorm-related hazards and to gain an understanding of environmental factors increasing or decreasing their frequency. There are three main methodologies used in the construction of thunderstorm climatologies: thunderstorm frequency, thunderstorm tracking or lightning flash density. These approaches utilise a wide variety of underpinning datasets and employ many different methods ranging from correlations with potential influencing factors and mapping the distribution of thunderstorm day frequencies to tracking individual thunderstorm cell movements. Meanwhile, lightning flash density climatologies are produced using lightning data alone, and these studies therefore follow a more standardised format. Whilst lightning flash density climatologies are primarily concerned with the occurrence of cloud-to-ground lightning, the occurrence of any form of lightning confirms the presence of a thunderstorm and can therefore be used in the compilation of a thunderstorm climatology. Regardless of approach, the choice of analysis method is heavily influenced by the coverage and quality (detection efficiency and location accuracy) of available datasets as well as by the controlling factors which are under investigation. The issues investigated must also reflect the needs of the end-use application to ensure that the results can be used effectively to reduce exposure to hazard, improve forecasting or enhance climatological understanding.

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“…Regarding heavy rainfalls (hourly rainfall exceeding 20 mm), the percentages are 6.7% in episodes without lightning activity and 47.1% in case of lightning. Further, it is possible to have hail and/or heavy rainfall without lightning activity (probably associated with cases of warm rain, [24,26,34]), and not all lightning cases lead to hail and/or heavy rainfall.…”

Section: Radar Variablesmentioning

confidence: 99%

Evolution of Radar and Lightning Variables in Convective Events in Barcelona and Surroundings for the Period 2006–2020

Rigo¹,

Castillo²

2020

aeer

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The Metropolitan Area of Barcelona is a densely populated region in the North-East of the Iberian Peninsula. Infrastructures in this area play a significant role in the economy of this part of Europe. The combination of the Mediterranean Sea and the complex topography is responsible for the occurrence of severe weather events in this location and the surrounding areas. The use of remote sensing data in an hourly resolution allows the identification and characterization of those severe episodes, helping in determining the future trends of the adverse weather. This fact is crucial in the development of new engineering projects, as well as in the maintenance of the current ones. Weather radar and lightning observations have enabled the monitoring of an increase in severe weather occurrence and, in addition, the prime characteristics of the thunderstorms responsible for producing them. Deepening vertical developments, the presence of hail, and the decrease of the rainfall efficiency are some of the characteristics that must be taken into account in the near future.

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The Lightning Jump Algorithm for Nowcasting Convective Rainfall in Catalonia

Cited by 10 publications

References 59 publications

Towards nowcasting in Europe in 2030

Towards nowcasting in Europe in 2030

Review article: A comprehensive review of datasets and methodologies employed to produce thunderstorm climatologies

Evolution of Radar and Lightning Variables in Convective Events in Barcelona and Surroundings for the Period 2006–2020

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