It is important to describe the surface, and its properties, as well as possible. To do this SURFEX uses elevation data (from the GTOPO3 database of USGS), data on sand- and clay fraction in soil (from the HWSD database of FAO) and data on land surface parameters (from the ECOCLIMAP-
II).
SURFEX
Figure 1. The processes simulated with the model SURFEX (from the SURFEX website).
The current set-up
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