CLIMATOLOGY

Author: SOLANA ORTEGA ALBERTO.
Year: 2004.
University: COMPLUTENSE DE MADRID.
Place of defense: FACULTAD CC FÍSICA.
Place of preparation: INSTITUTO MATEMÁTICAS Y FÍSICA FUNDAMENTAL (CSIC).

Summary: It examines the current status of studies on risks associated with fonómenos extremes, highlighting the obstacles that limit to the statistical techniques that are commonly used for modelización.Se introduced a new framework of analysis based on the probability logic, which built languages plausible logic with observational data, adecudos to represent the uniqueness that comprise elmentos facts of evidencia.A from requirements of rationality and morality derives procedure inference entrópica REF, which was characterized by double extremización the relative entropy subject to ligatures fractiles of equiprobabilidad anchored at the datos.Apoyadas in the use of this procedure are proposed paths methodologies for the analysis of variability of recurrence and regionalization of extreme events, which require advance the solution of two problemas-tipo: the problem inference climb conditioned units funcionales.Por Finally, in order to illustrate these methodologies will include several examples of application, namely estudioo Probabilistic variability of the historical recurrence of the flooding river Guadelquivir in Andújar, probabilistic modeling of the accident tanker spills and causing major oil spills off the coast of Galicia and the regional analysis of the maximum annual avenues of a set of unregulated rivers of northern Spain.

Author: GOMEZ RODRIGUEZ MÓNICA.
Year: 2005.
University: VALENCIA.
Place of defense: FACULTAD DE FÍSICA.
Place of preparation: FACULTAD DE FÍSICA.

Summary: Researchers from various international programs have studied over the years, the potential use of remote sensing techniques for obtaining information on the processes taking place on the Earth's surface. These studies have demonstrated that the quantitative assessment of the transfer processes taking place entresuelo-vegetación-atmósfera can lead to a better understanding of the relationship between crop growth and water use. Although in the past 20 years there has been a significant increase in the use of Remote Sensing, it remains under-utilized by management of water resources. The Remote Sensing offers great advantages over field measurement, and that the measures obtained through remote sensing techniques are objective, that is not dependent on human perception to implement the various techniques and in addition, the information is collected in a systematic and covering large areas in order to obtain time series. Evapotranspiration is of great importance since his determination allows optimum use of water for irrigation especially in arid and semi-arid areas, where the shortage is a big problem. The work presented here is intended to provide a simple method that will produce maps of evapotranspiration using data from sensors of high and low resolution platforms located in space or on board aircraft. The analysis and the results are displayed throughout this work is a continuation of the study presented in the research work "Estimating the evapotraspiración through Remote sensing techniques. Application to the experimental areas Barrax and Alphille" held within at the University of Valencia and submitted in September 2003