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The surface energy balance has been modelled over the region of Sicily (IT), in order to monitor the surface moisture status by following the evolution of the evaporative fraction.

In the one-source model EVA, the sensible heat flux has been estimated. Additionally, daily rates of evaporation have been derived by assuming a constant evaporative fraction over the entire day. This simplistic approach is thought to make best use of the limited data available.

The EVA model results are compared to pan evaporation data, evapotranspiration estimates from the standard method of Priesley-Taylor and to results of the GCM of ECWMF. This comparison highlights the limited value of point measurements on the one hand and results from global circulation models on the other hand for validation purposes on the intermediate regional scale. le.

Additional information

Authors: NIEMEYER S, Swiss Federal Institute for Snow and Avalanche Research, Davos Dorf (CH);VOGT J, JRC, Space Applications Institute, Ispra (IT)
Bibliographic Reference: An article published in: Remote Sensing and Climate Modeling: Synergies and Limitations, (2001), Beniston M, Verstraete M M (editors), pp.329-343
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