Tendencias opuestas de la precipitación en Europa: una atribución a partir de las anomalías del transporte de humedad

Abstract

Precipitation trends in Europe have revealed opposing trends between different regions. The causes have been attributed to the influence of teleconnection patterns and the increasing influence of persistent high-pressure systems. In this paper we investigate these changes from another perspective, taking into account the variability of atmospheric moisture transport from the climatological sources of moisture in each region. To carry out this study, regions with statistically significant trends of opposite sign were determined using precipitation data from various products. For each region, its oceanic and terrestrial moisture sources that contributed to precipitation were determined. The results confirm the agreement in the representation of positive precipitation trends in southeastern Europe and the western half of the Iberian Peninsula, as well as negative trend values in some parts of central and western Europe. The North Atlantic Ocean and the Mediterranean Sea acted as the most important sources.