Method for spatialization of the climatic water balance elements

Abstract

The objective of this work was to develop and evaluate a method for the spatial distribution of the climatic water balance (CWB) elements. The method applies terrain digital models containing the spatial distribution of climate elements used as input data of CWB. Evaluation was made with existing CWB data from 110 pluviometric stations of Espírito Santo state, Brazil. The proposed method’s performance was compared to the one of the following spatial interpolators: kriging and inverse distance weighting. The proposed method presented best predictions of the spatial distribution of all CWB elements – actual evapotranspiration, water deficit, water surplus and water availability.