Trends in precipitation, by different inputs, in the central sector of the Iberian Peninsula (1958-2008)

Previous papers from the CEAM Group in relation to the analysis of precipitation by meteorological origin, have permitted the detection of negative trends in the precipitation for frontal systems and continental advections (Northern) in the last 50 years. These negative trends have had important repercussions in the inland areas of the Valencia Region and not on the coast. The objective of this work is to analyze if the same decreasing trends can be detected in the precipitations from the Atlantic origin in areas of the interior of the Iberian Peninsula. In order to do that we have worked in two sectors, the North and the South of the Central System. We worked with the same methodology of desaggregation. The results not only confirm the hypothesis of precipitation decrease but show generalized trends in decreasing totals precipitations, especially in the North of the Central System.