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HyMeX-SOP1: The Field Campaign Dedicated to Heavy Precipitation and Flash Flooding in the Northwestern Mediterranean

Véronique Ducrocq 1 Isabelle Braud 2 Silvio Davolio 3 Rossella Ferretti 4 Cyrille Flamant 5 Agustin Jansa 6 Norbert Kalthoff 7 Evelyne Richard 8 Isabelle Taupier-Letage 9 Pierre-Alain Ayral 10 Sophie Belamari 1 Alexis Berne 11 Marco Borga 12 Brice Boudevillain 13 Olivier Bock 14 Jean-Luc Boichard 15 Marie-Noëlle Bouin 1 Olivier Bousquet 1, 16 Christophe Bouvier 17 Jacopo Chiggiato 18 Domenico Cimini 19 Ulrich Corsmeier 7 Laurent Coppola 20 Philippe Cocquerez 21 Eric Defer 22 Julien Delanoë 5 Paolo Di Girolamo 23 Alexis Doerenbecher 1 Philippe Drobinski 24 Yann Dufournet 25 Nadia Fourrié 1 Jonathan J. Gourley 26, 27 Laurent Labatut 1 Dominique Lambert 8 Jérôme Le Coz 2 Frank S. Marzano 4 Gilles Molinié 13 Andrea Montani 28 Guillaume Nord 13 Mathieu Nuret 1 Karim Ramage 29 Bill Rison Odile Roussot 1 Frédérique Saïd 8 Alfons Schwarzenboeck 30 Pierre Testor 31 Joël van Baelen 30 Béatrice Vincendon 1 Montserrat Aran 32 Jorge Tamayo 6
5 SPACE - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
14 LAREG - LAboratoire de REcherche en Géodésie [Paris]
LaSTIG - Laboratoire des Sciences et Technologies de l'Information Géographique
31 VOG - Variabilité de l'Océan et de la Glace de mer
LOCEAN - Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
Abstract : The Mediterranean region is frequently affected by heavy precipitation events associated with flash floods, landslides, and mudslides that cause hundreds of millions of euros in damages per year and often, casualties. A major field campaign was devoted to heavy precipitation and flash floods from 5 September to 6 November 2012 within the framework of the 10-year international HyMeX (Hydrological cycle in the Mediterranean Experiment) dedicated to the hydrological cycle and related high-impact events. The 2- month field campaign took place over the Northwestern Mediterranean Sea and its surrounding coastal regions in France, Italy, and Spain. The observation strategy of the field experiment was devised to improve our knowledge on the following key components leading to heavy precipitation and flash flooding in the region: i) the marine atmospheric flows that transport moist and conditionally unstable air towards the coasts; ii) the Mediterranean Sea acting as a moisture and energy source; iii) the dynamics and microphysics of the convective systems producing heavy precipitation; iv) the hydrological processes during flash floods. This article provides the rationale for developing this first HyMeX field experiment and an overview of its design and execution. Highlights of some Intense Observation Periods illustrate the potential of the unique datasets collected for process understanding, model improvement and data assimilation.
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Véronique Ducrocq, Isabelle Braud, Silvio Davolio, Rossella Ferretti, Cyrille Flamant, et al.. HyMeX-SOP1: The Field Campaign Dedicated to Heavy Precipitation and Flash Flooding in the Northwestern Mediterranean. Bulletin of the American Meteorological Society, American Meteorological Society, 2014, 95 (7), pp.1083-1100. ⟨10.1175/BAMS-D-12-00244.1⟩. ⟨hal-00907518⟩

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