Influencia de la orografía y de la inestabilidad convectiva en la distribución espacial de lluvias extremas en Cataluña

Abstract

All the flash flood events in Catalonia in the last half century have been methodically studied, with special emphasis on the Novernber 1982 event. The relationship between the space distribution of the rainfall and the orography has been analysed. On the basis of the Palma de Mallorca radiosonde ascents, the convective instability has been ascertained and the minimum necessary ascent for the instabilization has been obtained. Streamlines in the lower troposphere have been drawn, which has enabled us to ascertain the dominant flow direction. Some hydrological information has also been included.