Interpolación espacial de la temperatura mínima diaria mediante Krigeado universal

Ponencia presentada en: XXXIII Jornadas Científicas de la AME y el XIV Encuentro Hispano Luso de Meteorología celebrado en Oviedo, del 7 al 9 de abril de 2014

Clasificación climática de Thornthwaite para España obtenida mediante técnicas SIG

Ponencia presentada en: XXIX Jornadas Científicas de la AME y el VII Encuentro Hispano Luso de Meteorología celebrado en Pamplona, del 24 al 26 de abril de 2006

Variabilidad de los climas de Köppen en la España peninsular y Baleares en el periodo 1951-2010

Ponencia presentada en: XXXII Jornadas Científicas de la AME y el XIII Encuentro Hispano Luso de Meteorología celebrado en Alcobendas (Madrid), del 28 al 30 de mayo de 2012

Características climáticas 1981-2010

Presentación realizada en: Jornada sobre fenología y cambio climático, celebrada el 26 de febrero de 2019 en la sede central de AEMET en Madrid. En dicha Jornada tuvo lugar la presentacion del libro "Selección de especies de interés fenológico en la península ibérica e islas Baleares" publicado por AEMET

Mapping minimum daily temperature in Spain using kriging with external drift

Presentación realizada en: 10th EUMETNET Data Management Workshop celebrado en St. Gallen, Suiza, del 28 al 30 de octubre de 2015.The spatial interpolation of daily temperature is often a complex process compared to the interpolation of monthly or annual data due to the necessity of dealing with local phenomenons, such as inversions, that frequently affect the daily temperatures, especially in mountainous regions. The objective of this study is to describe the methodology that it is being used in the Spanish Meteorological Agency for obtaining gridded fields of daily minimum temperature using a universal kriging method with with the altitude and the distance to the coast as an external drift. In this method, the vertical temperature gradient can vary from one point to another in the study region, so that temperature inversion effects can be properly considered in the interpolation process. A validation process is shown, including a comparison with other typical interpolation methods: regression kriging, ordinary kriging and inverse distance weighted. Finally, some examples of maps obtained by this method are shown, including several products generated for agroclimatological purposes by combining daily gridded maps, such as average number of frost days, mean first and last freezing date and average chill hours below different temperature thresholds

Development of hight resolution gridded datasets of monthly temperature since 1916 for Spain

This article describes the methodology used in the Spanish State Meteorological Agency (AEMET) for obtaining gridded datasets of monthly minimum, maximum and mean temperature with 1 × 1 km spatial resolution for Spain, covering the period 1916-2018. These datasets have been created for climate analysis and monitoring, and will be updated periodically to extend the time coverage. The data used to produce the grids have undergone a quality control process in order to remove or correct erroneous data. The spatial interpolation method consists on a multiple linear regression with ordinary kriging of the regression residuals, using elevation, easting, northing and distance to the coast as independent variables in the regression. The performance of the interpolation method and the accuracy of the grids are evaluated using a cross-validation approach to estimate the errors. Some examples of derived products are shown, as well as a temperature analysis over the 1916-2018 period in Spain based on the gridded datasets

Reconstrucción desde 1864 de la serie de precipitación útil de las cuencas del Sureste y Levante

Ponencia presentada en: III Congreso de la Asociación Española de Climatología “El agua y el clima”, celebrado en Palma de Mallorca del 16 al 19 de junio de 2002.[ES]Se reconstruyen las series de precipitación y temperatura areales de las cuencas del Sureste y Levante desde 1864 aplicando modelos de correlación múltiple paso a paso a los datos de observación, ajustados con los datos desde 1947 en el caso de la precipitación y desde 1990 en el de la temperatura. Se analiza la serie de precipitación útil y se concluye que el recurso hídrico generado en la zona no presenta tendencias significativas; sin embargo, es patente su gran variabilidad interanual, y el coeficiente de variación móvil en periodos consecutivos de treinta años presenta una tendencia al alza, lo que implicaría una mayor alternancia de periodos de alta y baja disponibilidad de agua dulce y, por tanto, un aumento de uno de los factores que condicionan el fenómeno de la desertificación y los problemas en la administración del agua.[EN]Both areal precipitation and temperature series, belonging to the Southwest and Levante basins, and beginning in 1864, are rebuilt. The observation data, collected by the main climatological stations, yield the material for the reconstruction by stepwise regression models. These models were fitted with data since 1947 for the precipitation series and with data since 1990 for the temperature series. An analysis of run-off series shows that the hydric resource generated in the study area has no significant trend. However, it is matter-of-fact the outstanding interannual variability. Furthermore, the thirty years moving average series shows a growing trend, which might determine a higher rate of changes between periods of shortage and surplus of available fresh water, responsible at last for the increase of one of the factors involved in the drought phenomenon and consequent problems of water management