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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
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
Barriopedro Cepero, David ; Gimeno, L. ; García Herrera, Ricardo ; Nieto, R. ; Lorente, J. ; Redaño, A. ; Gordillo, A. ; Serrano, A. ; Ribera, P. ; Torre, L. de la | Springer Wien | 2007-04An earlier developed multidecadal database of Northern Hemisphere cut-off low systems (COLs), covering a 41 years period (from 1958 to 1998) is used to study COLs interannual variability in the European sector (25 degrees-47.5 degrees N, 50 degr[...]texto impreso
Hernández, Emiliano ; Cana, L. ; Díaz, J. ; García Herrera, Ricardo ; Gimeno, L. | Springer-Verlag Wien | 1998Mesoscale Convective Systems (MCSs) data registers from June to December during 1990-94 were obtained from the Spanish National Meteorological Institute (INM). Fifteen Mesoscale Convective Complexes (MCCs) were identified through this database. [...]texto impreso
Barriopedro Cepero, David ; Álvarez, I. ; Gómez Gesteira, M. ; Gimeno, L. ; Taboada, J. J. ; Lorenzo, M. N. ; Castro, M. de ; Nieto, R. ; Crespo, A. J. C. ; Ramos, A. M. ; Iglesias, I. ; Gómez Gesteira, J. L. ; Santo, F. E. ; Trigo, I. F. | Inter-Research | 2011Since 1974, there has been a significant increasing trend in land and sea surface temperatures of 0.5 and 0.24 degrees C decade(-1), respectively, in the NW Iberian Peninsula. Over the same period, annual precipitation does not show any trend, a[...]texto impreso
Ribera, P. ; Gallego, D. ; Gimeno, L. ; Pérez Campos, J. F. ; García Herrera, Ricardo ; Hernández, E. ; Torre, L. de la ; Nieto, R. ; Calvo Fernández, Natalia | Springer | 2004-04Equivalent temperature based in the NCEP/NCAR reanalysis database has been used as a simultaneous measure of temperature and humidity. Its variations during the 1958-1998 added to the effect of the inclusion of satellite data during the late sev[...]texto impreso
Sousa, P. M. ; Trigo, R. M. ; Aizpurua, P. ; Nieto, R. ; Gimeno, L. ; García Herrera, Ricardo | European Geosciences Union | 2011Average monthly precipitation, the original Palmer Drought Severity Index (PDSI) and a recent adaptation to Europe, the Self Calibrated PDSI (scPDSI) have been used here to analyse the spatial and temporal evolution of drought conditions in the [...]texto impreso
Calvo Fernández, Natalia ; Ribera, P. ; Gimeno, L. ; Gallego, D. ; García Herrera, Ricardo ; Hernández, E. ; Torre, L. de la ; Nieto, R. | Springer | 2004-04Two different groups of indices have been defined to analyze the evolution of global temperature between 1958 and 1998. All the indices were evaluated at three different levels (850, 500 and 200 hPa), and averaged indices were calculated using t[...]
