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Autor Hernández Martín, Emiliano |
Documentos disponibles escritos por este autor (24)
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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
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
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
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
Ribera, P. ; Peña Ortiz, C. ; García Herrera, Ricardo ; Gallego, D. ; Gimeno, L. ; Hernández Martín, Emiliano | American Geophysical Union | 2004-09-23The quasi-biennial oscillation (QBO) signal in stratospheric zonal and meridional wind, temperature, and geopotential height fields is analyzed based on the use of the National Centers for Environmental Prediction (NCEP) reanalysis (1958-2001). [...]texto impreso
García Herrera, Ricardo ; Díaz, J. ; Trigo, R. M. ; Hernández Martín, Emiliano | European Geosciences Union | 2005This paper examines the effect of extreme summer temperatures on daily mortality in two large cities of Iberia: Lisbon (Portugal) and Madrid (Spain). Daily mortality and meteorological variables are analysed using the same methodology based on B[...]texto impreso
Gimeno, Luis ; Ribera, Pedro ; Iglesias, Raquel ; Torre, Laura de la ; García Herrera, Ricardo ; Hernández Martín, Emiliano | Inter-Research | 2002-06-14This study characterizes the influence of the El Niño-Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO) on the most important crops in Spain using statistical analysis of the response of historical yields to ENSO and NAO phase[...]texto impreso
García Herrera, Ricardo ; Gallego Puyol, David ; Hernández Martín, Emiliano ; Gimeno, Luis ; Ribera Rodríguez, Pedro | American Meteorological Society | 2001-10The aim of this paper is to investigate the relationship between the Canary Island rainfall and the Atlantic large-scale circulation, characterized by the North Atlantic oscillation (NAO) index. The Canary Islands are located in the Atlantic sub[...]texto impreso
García Herrera, Ricardo ; Barriopedro Cepero, David ; Hernández Martín, Emiliano ; Paredes, Daniel ; Correoso, Juan Francisco ; Prieto, L. | Elsevier Science INC | 2005-02A 3-year Mesoscale Convective Systems (MCSs) database, which extends from 2000 to 2002, has been built for the Iberian Peninsula and the Balearic Islands using the objective method MASCOTTE (MAximum Spatial COrrelation Technique). It was origina[...]texto impreso
Prieto, L. ; García Herrera, Ricardo ; Díaz, J. ; Hernández Martín, Emiliano ; Teso, T. del | European Geophysical Society | 2002-12Extremely cold days (ECDs), with minimum temperatures lower than -4.6°C, have been analysed for Madrid. This threshold corresponds to the 5th percentile of the period 1963-1999. Adopting a case analysis approach, five synoptic patterns have been[...]texto impreso
García Herrera, Ricardo ; Gimeno, Luis ; Ribera, Pedro ; Hernández Martín, Emiliano | American Geophysical Union | 2005-02-04Spanish historical documents from the Archivo General de Indias (General Archive of the Indies) have been used to identify Caribbean hurricanes and storms from the sixteenth to the nineteenth centuries. These sources provide previously unrecorde[...]texto impreso
García Herrera, Ricardo ; Ribera, Pedro ; Hernández Martín, Emiliano ; Gimeno, Luis | American Geophysical Union | 2007-03-22In recent years, the population and the value of properties in areas prone to tropical cyclone (TC) have increased dramatically. This has caused more attention to be placed on the characterization of TC climatologies and the identification of th[...]texto impreso
García Herrera, Ricardo ; Calvo Fernández, Natalia ; Gallego, David ; Hernández Martín, Emiliano ; Gimeno, Luis ; Ribera, Pedro | John WiIley & Sons LTD | 2003-02A strong decreasing trend in the Canary Islands' precipitation is detected by studying daily rainfall time series for the second half of the 20th century. An analysis of the extreme events shows that this trend is due mainly to a decrease in the[...]