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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
Gimeno, Luis ; De la Torre, Laura ; Nieto, Raquel ; Gallego, David ; Ribera, Pedro ; García Herrera, Ricardo | Pergamon- Elsevier Science Ltd | 2007-11We studied the main climatological features of the Arctic and Antarctic stratospheric vortices, using a new approach based on defining the vortex edge as the 50 hPa geostrophic streamline of maximum average velocity at each hemisphere. Given the[...]texto impreso
Gallego, David ; Ribera, Pedro ; García Herrera, Ricardo ; Hernández, Emiliano ; Gimeno, Luis | Springer | 2005-05A new jet stream description, defined as the geostrophic streamline of maximum average velocity is proposed. An objective algorithm for detecting and tracking the jet has been developed, tested and applied to the NCEP/NCAR 200-hPa geopotential h[...]texto impreso
Gallego, David ; García Herrera, Ricardo ; Calvo Fernández, Natalia ; Ribera, Pedro | American Geophysical Union | 2007-06-23A new documentary source of data for wind, atmospheric pressure and air temperature for the city of Cadiz (southern Spain) has been abstracted, analyzed and compared with present-day data. Wind records cover the period 1806-1852 with three obser[...]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[...]texto impreso
García Herrera, Ricardo ; Macias, Antonio ; Gallego, David ; Hernández Martín, Emiliano ; Gimeno, Luis ; Ribera, Pedro | American Meteorological Society | 2003-08Records of taxes collected during the seventeenth and eighteenth centuries contribute to understanding of climatic variability of the subtropical North Atlantic region. Historical documentary sources in the Canary Islands have been used to const[...]texto impreso
Gallego, David ; García Herrera, Ricardo ; Peña Ortiz, Cristina ; Ribera, Pedro | Nature Publishing Group | 2017-11-23A new bicentennial series of the Australian monsoon strength based on historical wind observations has allowed for the assessment of the variability of this system since the early 19th century. Our series covers a period in which the scarcity of[...]texto impreso
García Herrera, Ricardo ; Calvo Fernández, Natalia ; Gallego, David ; Hernández Martín, Emiliano ; Gimeno, Luis ; Ribera, Pedro ; Peña Ortiz, Cristina | American Geophysical Union | 2003-07-08The spatiotemporal evolution of the zonal wind in the stratosphere is analyzed based on the use of the NCEP reanalysis (1958-2001). MultiTaper Method-Singular Value Decomposition (MTM-SVD), a frequency-domain analysis method, is applied to isola[...]texto impreso
Gallego, David ; García Herrera, Ricardo ; Gómez Delgado, Francisco de Paula ; Ordóñez Pérez, Paulina ; Ribera, Pedro | Copernicus Gesellschaft MBH | 2019-05-02In this paper, we develop an instrumental index based on historical wind direction observations aimed to quantify the moisture transport from the tropical Pacific to Central and northern South America at a monthly scale. This transport is mainly[...]texto impreso
Barriopedro Cepero, David ; Gallego, David ; Álvarez Castro, M. Carmen ; García Herrera, Ricardo ; Wheeler, Dennis ; Peña Ortiz, Cristina ; Barbosa, Susana M. | Springer | 2014-08A monthly index based on the persistence of the westerly winds over the English Chanel is constructed for 1685–2008 using daily data from ships’ logbooks and comprehensive marine meteorological datasets. The socalled Westerly Index (WI) provides[...]
