Abstract

We analysed temporal and spatial trends in rainfall volume and concentration from 96 pluviometric stations in the Region of Valencia (E. Spain) from 1961 to 1990. The main results of analysis are the following: 1) We find a decrease in annual rainfall in 43% of the stations studied. Variability in rainfall volume remains unchanged or increase (52% and 38% of the stations respectively). 2) Monthly rainfall concentration shows no temporal trend in 41% of the stations and a gradual increase in 39% of the stations. Similar figures are obtained for variability in rainfall concentration. 3) In areas with low average rainfall (semiarid climate), annual rainfall volume increases or remain unchanged, whereas, in are as with high average precipitation (dry to subhumid climate) a negative trend dominate. 4) We discuss results in relation to predictions from GCM studies and to the origin of the rainfall events.

Highlights

  • 2) Monthly rainfall concentration shows no temporal trend in 41% of the stations and a gradual increase in 39% of the stations

  • El segundo sub sector muestra pautas semejantes en la tendencia anual de la precipitación y su variabilidad interanual, pero las tendencias no han sido tan evidentes como en el caso previo; por el contrario, la concentración de la lluvia ha aumentado en muchas estaciones principalmente en las localidades del interior

  • ESTUDIO ESPACIAL Y TEMPORAL DE LAS TENDENCIAS DE LA LLUVIA EN LA COMUNIDAD VALENCIANA (1961-15>90)

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Summary

Introduction

2) Monthly rainfall concentration shows no temporal trend in 41% of the stations and a gradual increase in 39% of the stations. Junto al análisis citado hemos estudiado la tendencia de los residuos al objeto de observar los cambios en la variabilidad entre años (predictibilidad), tanto de la cantidad de lluvia anual como de la concentración.

Results
Conclusion
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