Operational tools and applications of EO satellite data to retrieve surface fluxes in semi-arid countries
Author
Tanguy, MalikoDirector/a
Baille, Alain; Martínez Álvarez, VictorianoUniversity
Universidad Politécnica de CartagenaFecha de lectura
2012-07-27Publication date
2012Publisher
Maliko TanguyKeywords
Hydrological modelsAgricultural water management
Semi-arid regions
Mar Menor
Land surface models (LSMs)
South of Spain
Segura River Basin
Evapotranspiration (ET)
Land surface climatology
Abstract
The overall objective of the thesis is to develop and evaluate useful tools and applications of Earth Observation (EO) satellite data to estimate surface fluxes in semiarid countries. The first specific objective (Chapter 4) is to assess the performance and robustness of the triangle method, a remote sensing (RS) based method to retrieve and map land evapotranspiration (ET). Emphasis is put on the estimation of soil heat flux (G), which represents an important sink of energy in these regions. Estimating accurately G is still very problematic, because of its dependence on both vegetation cover fraction and soil physical properties. To that aim, the partial goals are: - Proposal of a new parameterisation scheme for G, based on a linear relationship with the evaporative fraction (EF) - Assessment of the ET retrieval triangle method with the new Gparameterisation As a second specific objective (Chapter 5), the triangle method was compared with predictions supplied by a land surface model ...
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