Now showing items 1-20 of 20

    • A mediterranean nocturnal heavy rainfall and tornadic event. Part I: overview, damage survey and radar analysis 

      Van der Velde, Oscar Arnoud; Bech, Joan; Pineda Rüegg, Nicolau; Rigo, Tomeu; Aran, Montserrat; Amaró, Jésica; Gayà, M; Arús, J; Montañá Puig, Juan (2011-01-03)
      Article
      Restricted access - publisher's policy
      This study presents an analysis of a severe weather case that took place during the early morning of the 2nd of November 2008, when intense convective activity associated with a rapidly evolving low pressure system affected ...
    • A mediterranean nocturnal heavy rainfall and tornadic event. Part II: total lightning analysis 

      Pineda Rüegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá Puig, Juan (2010-11-09)
      Article
      Restricted access - publisher's policy
      On the night from 1st to 2nd of November 2008, a multi-cell storm coming from the Mediterranean produced severe weather in the coastal area of Catalonia (NE Spain): groundlevel strong damaging wind gusts, a tornado – ...
    • A new methodology to characterise the radar bright band using doppler spectral moments from vertically pointing radar observations 

      Garcia Benadí, Albert; Bech, Joan; González Herrero, Sergi; Udina, Mireia; Codina Sánchez, Bernat (Multidisciplinary Digital Publishing Institute (MDPI), 2021-10-27)
      Article
      Open Access
      The detection and characterisation of the radar Bright Band (BB) are essential for many applications of weather radar quantitative precipitation estimates, such as heavy rainfall surveillance, hydrological modelling or ...
    • A study of thunderstorm characteristics using lightning and weather radar observations 

      Pineda Rüegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá Puig, Juan (2004)
      Conference lecture
      Restricted access - author's decision
      The main objective of this study was to give insight into the temporal and spatial aspects of lightning activity during the life cycle of diverse types of thunderstorms, and to examine the possible relationships with ...
    • Alternative processing for micro rain radar (MRR) observations 

      Garcia Benadí, Albert; Bech, Joan; González Herrero, Sergi; Río Fernandez, Joaquín del (2018)
      Conference lecture
      Open Access
      The most common function of weather radars is to provide a description of the precipitation field, typically in four dimensions: temporal evolution of a 3D field, including characteristics of precipitation and rainfall ...
    • An observational description of a tornadic severe weather event 

      Bech, Joan; Pineda Rüegg, Nicolau; Aran, M; Amaro, J; Gayà, M; Arús, J; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2009)
      Conference lecture
      Restricted access - author's decision
      This study presents an analysis of a severe weather case study that took place during the early morning of the 2nd of November 2008, when intense convective activity associated to a rapidly evolving low pressure system ...
    • Analysis of lightning associated with a sprite displaced from its parent positive cloud to ground lightning flash 

      Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Soula, Serge; Neubert, Torsten; Bech, Joan; Mika, Agnes (2007)
      Conference lecture
      Restricted access - author's decision
    • Analysis of the electric field changes due to lightning during Catalonia thunderstorms in Summer 2003 

      Montañá Puig, Juan; Bergas Jané, Joan Gabriel; Pineda Rüegg, Nicolau; Bech, Joan; Rigo, Tomeu; Illa Arnau, Àngel; Hermoso Alameda, Blas (2004)
      Conference lecture
      Restricted access - author's decision
      Electric fields related to lightning close to storms were measured in the Catalonian region (NE of Spain) in summer 2003. The aim of this campaign was the data collection to study the total electrical charge involved in ...
    • Estudi de l'episodi tornàdic nocturn amb precipitacions intenses del 2 de novembre de 2008 a Catalunya 

      Van der Velde, Oscar Arnoud; Bech, Joan; Pineda Rüegg, Nicolau; Rigo, Tomeu; Aran, Montserrat; Amaró, Jésica; Gayà, M; Arús, J; Montañá Puig, Juan (2010)
      Conference lecture
      Restricted access - author's decision
      Aquest estudi presenta una anàlisi d’un episodi de temps sever que va tenir lloc la matinada del 2 de novembre de 2008, quan la costa sud de Catalunya va estar afectada per una intensa depressió que va dur associada ...
    • Meteorological aspects of winter upward lightning from an instrumented tower in the Pyrenees 

      Pineda, Nicolau; Montanya, Joan; Romero Durán, David; Bech, Joan; González Lopez, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Open Access
      A case study of winter upward lightning is analysed. In particular, the study focuses on the meteorological aspects that favoured the triggering of upward lightning by an instrumented tower in the eastern Pyrenees. Starting ...
    • Observations of Western Mediterranean TLE: LS8000 intracloud lightning and high-speed video 

      Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Romero Durán, David; Soula, Serge; Pineda Rüegg, Nicolau; Bech, Joan; Reglero, V. (2009)
      Conference lecture
      Restricted access - author's decision
      Transient luminous events (TLE) are electrical phenomena occurring between the ionosphere and the tops of thunderstorms. First discovered in 1989, the family of TLE now consists of different members: sprites, sprite ...
    • On the observed connection between Arctic sea ice and Eurasian snow in relation to the winter North Atlantic Oscillation 

      Santolaria-Otín, María; García Serrano, Javier; Ménégoz, Martin; Bech, Joan (IOP Publishing, 2020)
      Article
      Open Access
      Sea ice concentration (SIC) in the eastern Arctic and snow cover extent (SCE) over central Eurasia in late autumn have been proposed as potential predictors of the winter North Atlantic Oscillation (NAO). Here, maximum ...
    • Precipitation type classification of micro rain radar data using an improved doppler spectral processing methodology 

      Garcia Benadí, Albert; Bech, Joan; González Herrero, Sergi; Udina, Mireia; Codina Sánchez, Bernat; Georgis, Jean-François (Multidisciplinary Digital Publishing Institute (MDPI), 2020-12-16)
      Part of book or chapter of book
      Open Access
      This paper describes a methodology for processing spectral raw data from Micro Rain Radar (MRR), a K-band vertically pointing Doppler radar designed to observe precipitation profiles. The objective is to provide a set of ...
    • Predictability assessment of nowcasts in high-impact heavy precipitation events 

      Bech, Joan; Berenguer Ferrer, Marc (2012)
      Conference lecture
      Open Access
    • Skill in nowcasting high-impact heavy precipitation events 

      Bech, Joan; Berenguer Ferrer, Marc (2014)
      Conference lecture
      Open Access
      The objective of this study is to assess the skill of a precipitation nowcasting (very short range forecasting) system, with particular emphasis on hig-impact Heavy Precipitation Events (HPE). A threshold amount of 20 mm ...
    • Study of the total lightning activity in a hailstorm 

      Montañá Puig, Juan; Soula, Serge; Pineda, Nicolau; Van der Velde, Oscar Arnoud; Clapers, Pere; Solà de las Fuentes, Glòria; Bech, Joan; Romero Durán, David (2009)
      Article
      Restricted access - author's decision
      A thunderstorm that developed over northeastern Spain on 16 June 2006 is analyzed. This severe thunderstorm produced hailstones as large as 40 mm and had a lifetime of 3 h and 30 min. Radar cross-sections show strong ...
    • Study of the total lightning activity in a hailstorm 

      Montañá Puig, Juan; Soula, Serge; Pineda Rüegg, Nicolau; Van der Velde, Oscar Arnoud; Clapers, Pere; Solà de las Fuentes, Glòria; Bech, Joan; Romero Durán, David (2007)
      Conference lecture
      Restricted access - author's decision
      A thunderstorm which developed in North-Eastern region of Spain on 16th June, 2006 is analyzed. This thunderstorm could be severe because it produced hailstones larger than 19 mm. The cell life time was 3h 30 minutes. ...
    • Total lightning analysis of a tornadic severe weather event 

      Pineda Rüegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2009)
      Conference lecture
      Restricted access - author's decision
      This study presents an analysis of total lightning and radar data of a severe weather event that took place in the early morning of 2nd November 2008 in Catalonia (NE Spain). A general overview of the synoptic framework ...
    • Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign 

      González Herrero, Sergi; Bech, Joan; Garcia Benadí, Albert; Udina Sistach, Mireia; Codina Sánchez, Bernat; Trapero, Laura; Georgis, Jean-Francois (2021-08)
      Article
      Open Access
      Precipitations processes at windward and leeward sides of the mountains have been object of study for many decades. Instead, inner mountain valleys, where usually most mountain population lives, have received considerably ...
    • Vertically resolved precipitation intensity retrieved through a synergy between the ground-based NASA MPLNET lidar network measurements, surface disdrometer datasets and an analytical model solution 

      Lolli, S.; D'Adderio, L.P.; Campbell, J.R.; Sicard, Michaël; Welton, E.J.; Binci, A.; Rea, Alessandro; Tokay, A.; Comerón Tejero, Adolfo; Barragán Cuesta, Rubén; Baldasano Recio, José María; González, Sergio; Bech, Joan; Afflitto, Nicola; Lewis, J.R.; Madonna, Fabio (Multidisciplinary Digital Publishing Institute (MDPI), 2018-07-01)
      Article
      Open Access
      In this paper, we illustrate a new, simple and complementary ground-based methodology to retrieve the vertically resolved atmospheric precipitation intensity through a synergy between measurements from the National Aeronautics ...