Analysis of mesoscale convective systems with hail precipitation

Sánchez, José Luis; Valle, Pilar del; Fernández, J.; Tudurí, Elisa; Ramis, C.

doi:10.1016/s0169-8095(03)00074-7

Cited by 35 publications

(13 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The hail potential over the western parts, especially over Great Britain and the Iberian Peninsula, is substantially underestimated by the modLHM. Only over the lower Ebro valley does the model quantify higher PHI values in accordance to several observational studies [e.g., Sánchez et al, 2003;Ceperuelo Mallafré et al, 2009;García-Ortega et al, 2011]. For other regions in Spain, such as the Valencia province [Saa Requejo et al, 2011], or the eastern flanks of the Iberian highlands, where an increased hail hazard is observed, the modLHM does not produce reliable results.…”

Section: Discussionsupporting

confidence: 65%

Hail potential in Europe based on a regional climate model hindcast

Mohr

Kunz

Geyer

2015

Geophysical Research Letters

View full text Add to dashboard Cite

Due to the local‐scale nature of hail and a lack of appropriate observation systems, comprehensive, reliable, and consistent information about hail frequency and intensity in Europe is not available. To overcome this constraint, we developed a logistic hail model that quantifies the potential of the atmosphere to form hailstorms. The model is based on a combination of appropriate hail‐relevant meteorological parameters. This paper presents the application of an adjusted version of the logistic model with the objective being to estimate the hail potential across Europe based on dynamically downscaled National Centers for Environmental Prediction/National Center for Atmospheric Research1 reanalysis over a long‐term period of 60 years (1951–2010). The model output, in terms of the potential hail index (PHI), identified several hot spots that are well known from other observational studies. Time series of the PHI over the 60 year period show a high correlation at different sites across Europe and high annual and multiannual variability, but no overall trend.

show abstract

Section: Discussionsupporting

confidence: 65%

Hail potential in Europe based on a regional climate model hindcast

Mohr

Kunz

Geyer

2015

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…Tudurí et al (2003) showed, through numerical simulations, that the action of the thermal low that developed around the Ebro Valley is to inflow moist air from the Mediterranean and then to promote severe convection. Sánchez et al (2003) numerically investigated the same subject, with similar results. Analogously, convergence produced by Mediterranean cyclones over the maritime areas can lead to organised convective developments like squall lines, often linked to severe weather (Ramis et al, 2009).…”

Section: Dynamical and Physical Mechanisms -Numerical Modellingmentioning

confidence: 55%

MEDEX: a general overview

Jansà

Alpert

Arbogast

et al. 2014

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The general objective of the international MEDiterranean EXperiment (MEDEX) was the better understanding and forecasting of cyclones that produce high impact weather in the Mediterranean. This paper reviews the motivation and foundation of MEDEX, the gestation, history and organisation of the project, as well as the main products and scientific achievements obtained from it. MEDEX obtained the approval of World Meteorological Organisation (WMO) and can be considered as framed within other WMO actions, such as the ALPine EXperiment (ALPEX), the Mediterranean Cyclones Study Project (MCP) and, to a certain extent, THe Observing System Research and Predictability EXperiment (THORPEX) and the HYdrological cycle in Mediterranean EXperiment (HyMeX). Through two phases (2000-2005 and 2006-2010), MEDEX has produced a specific database, with information about cyclones and severe or high impact weather events, several main reports and a specific data targeting system field campaign (DTS-MEDEX-2009). The scientific achievements are significant in fields like climatology, dynamical understanding of the physical processes and social impact of cyclones, as well as in aspects related to the location of sensitive zones for individual cases, the climatology of sensitivity zones and the improvement of the forecasts through innovative methods like mesoscale ensemble prediction systems.

show abstract

“…The humid air from the Mediterranean favors the development of convective clouds that, in many cases, result in hail or heavy precipitation in the northeastern Iberian Peninsula (e.g. Sánchez et al, 2003). During this season the number of registered records in the southern half of Spain is very low.…”

Section: Daily Rainfall Recordsmentioning

confidence: 99%

Daily precipitation records over mainland Spain and the Balearic Islands

Ramis

Homar

Amengual

et al. 2013

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Understanding the spatial distribution of extreme precipitations is of major interest in order to improve our knowledge of the climate of a region and its relationship with society. These analyses inevitably require the use of directly observed values to account for the actual extreme amounts rather than analyzed gridded values. A study of daily rainfall extremes observed over mainland Spain and the Balearic Islands is performed by using records from 8135 rain gauge stations from the Spanish Weather Agency (AEMET). Results show that the heaviest daily precipitations have been observed mainly on the coastal Mediterranean zone from Gibraltar to the Pyrenees. In particular, a record value of 817 mm was recorded in the Valencia region in 1987. The current map of daily records in Spain, which updates the pioneering work of the Spanish meteorologist Font, shows similar distribution of extreme events but with notably higher amounts. Generalized extreme values distributions fit the Mediterranean and Atlantic rain gauge measurements and shows the different characteristics of the extreme daily precipitations in both regions. We identify the most extreme events (above 500 mm per day) and provide a brief description of a typical meteorological situation in which these damaging events occur. An analysis of the low-level circulation patterns producing such extremes -by means of simple indices such as NAO, WeMOi and IBEI -confirms the relevance of local flows in the generation of either Mediterranean or Atlantic episodes. WeMOi, and even more IBEI, are good discriminants of the region affected by the record precipitation event.

show abstract

Analysis of mesoscale convective systems with hail precipitation

Cited by 35 publications

References 24 publications

Hail potential in Europe based on a regional climate model hindcast

Hail potential in Europe based on a regional climate model hindcast

MEDEX: a general overview

Daily precipitation records over mainland Spain and the Balearic Islands

Contact Info

Product

Resources

About