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García Herrera, Ricardo ; Barriopedro Cepero, David ; Correoso, Juan Francisco ; Hernández Martín, Emiliano ; Paredes, Daniel | Elsevier Science INC | 2006-02In this paper cloud-to-ground (CG) lightning flashes of 33 Mesoscale Convective Systems (MCSs) over the Western Mediterranean area are analyzed. Mean values of 22% for the positive CG ratio, 1.1 (2.4) for positive (negative) CG multiplicity, 17 [...]texto impreso
Calvo Fernández, Natalia ; García, Rolando R. ; García Herrera, Ricardo ; Gallego Puyol, David ; Gimeno Presa, Luis ; Hernández Martín, Emiliano ; Ribera Rodríguez, Pedro | American Meteorological Society | 2004-10The El Niño-Southern Oscillation (ENSO) signal in the troposphere and lower stratosphere was investigated using Microwave Sounding Unit (MSU) data for the period 1979-2000. Empirical orthogonal functions (EOFs) were computed separately for zonal[...]texto impreso
This paper aims to provide a new blocking definition with applicability to observations and model simulations. An updated review of previous blocking detection indices is provided and some of their implications and caveats discussed. A novel blo[...]texto impreso
Barriopedro Cepero, David ; García Herrera, Ricardo ; González Rouco, J. Fidel ; Trigo, R. M. | Springer | 2010-12A previously defined automatic method is applied to reanalysis and present-day (1950-1989) forced simulations of the ECHO-G model in order to assess its performance in reproducing atmospheric blocking in the Northern Hemisphere. Unlike previous [...]texto impreso
García Herrera, Ricardo ; Ribera, Pedro ; Gimeno, Luis ; Hernández Martín, Emiliano | Springer | 2000-02The North Atlantic Oscillation (NAO) and the Southern Oscillation (SO) are compared from the standpoint of a possible common temporal scale of oscillation. To do this a cross-spectrum of the temporal series of NAO and SO indices was determined, [...]texto impreso
Domínguez Castro, F. ; Ribera, P. ; García Herrera, Ricardo ; Vaquero, J. M. ; Barriendos, M. ; Cuadrat, J. M. ; Moreno, J. M. | Copernicus Gesellschaft MBH | 2012Among the different meteorological hazards, droughts are those with the highest socio-economical impact on the Iberian Peninsula. Drought events have been largely studied in the instrumental period, but very little is known about the characteris[...]texto impreso
Garrido Pérez, José Manuel ; García Herrera, Ricardo ; Ordoñez García, Carlos | Elsevier Science INC | 2021-01-15Different air stagnation indices (ASIs) have been proposed to measure the atmospheric diffusion conditions. This paper undertakes a comparative analysis of three ASIs and explores their ability to capture the conditions conducive to elevated PM1[...]texto impreso
This paper is concerned with the use of Royal Navy ships’ logbooks for the period 1685 to 1750, thereby embracing the oldest members of this documentary series that extends to the present day. The geographic range of the undertaking is confined [...]texto impreso
García, Rolando R. ; Díaz, Henry F. ; García Herrera, Ricardo ; Eischeid, Jon ; Prieto, María del Rosario ; Hernández Martín, Emiliano ; Gimeno, Luis ; Rubio Durán, Francisco ; Bascary, Ana María | American Meteorological Society | 2001-11Historical accounts of the voyages of the Manila galleons derived from the Archivo General de Indias (General Archive of the Indies, Seville, Spain) are used to infer past changes in the atmospheric circulation of the tropical Pacific Ocean. It [...]texto impreso
García Herrera, Ricardo ; Díaz, H. F. ; García, R. R. ; Prieto, M. R. ; Barriopedro Cepero, David ; Moyano, R. ; Hernández Martín, Emiliano | American Meteorological Society | 2008-05The authors present a chronology of El Niño (EN) events based on documentary records from northern Peru. The chronology, which covers the period 1550-1900, is constructed mainly from primary sources from the city of Trujillo (Peru), the Archivo [...]texto impreso
Nieto, Raquel ; Gimeno, Luis ; Torre, Laura de la ; Ribera, Pedro ; Gallego, David ; García Herrera, Ricardo ; García, José Agustín ; Nuñez, Marcelino ; Redaño, Ángel ; Lorente, Jerónimo | American Meteorological Society | 2005-08-15This study presents the first multidecadal climatology of cutoff low systems in the Northern Hemisphere. The climatology was constructed by using 41 yr (1958-98) of NCEP-NCAR reanalysis data and identifying cutoff lows by means of an objective m[...]texto impreso
García Herrera, Ricardo ; Barriopedro Cepero, David ; Lupo, Anthony R. ; Hernández Martín, Emiliano | American Meteorological Society | 2006-03-15In this paper a 55-yr (1948-2002) Northern Hemisphere blocking climatology is presented. Traditional blocking indices and methodologies are revised and a new blocking detection method is designed. This algorithm detects blocked flows and provide[...]texto impreso
García Herrera, Ricardo ; Können, G. P. ; Wheeler, D. A. ; Prieto, M. R. ; Jones, P. D. ; Koek, F. B | Springer | 2005-11We have compiled a meteorological database over the world's oceans by digitizing data from European ship logbooks of voyages in the period 1750-1854. The observations are carefully reviewed and transformed into quantitative data. The chief conte[...]texto impreso
Delgado, G. ; Redaño, A. ; Lorente, J. ; Nieto, R. ; Gimeno, L. ; Ribera, P. ; Barriopedro Cepero, David ; García Herrera, Ricardo ; Serrano, A. | Springer Wien | 2007-04This paper reports a cloud cover analysis of cut-off low pressure systems (COL) using a pattern recognition method applied to IR and VIS bispectral histograms. 35 COL occurrences were studied over five years (1994-1998). Five cloud types were id[...]texto impreso
Palmeiro Nuñez, Froila María ; Barriopedro Cepero, David ; García Herrera, Ricardo ; Calvo Fernández, Natalia | American Meteorological Society | 2015-09Sudden stratospheric warmings (SSWs) are characterized by a pronounced increase of the stratospheric polar temperature during the winter season. Different definitions have been used in the literature to diagnose the occurrence of SSWs, yielding [...]
