Last month we released a new internet version of the Soil Water Atmosphere Plant (SWAP) model. SWAP simulates transport processes in the soil (water, solutes and heat) and vegetation growth.
The SWAP website provides detailed information, including an overview of international studies in which SWAP has been used. You can use SWAP as it is, or use the modelling environment of SWAP to implement and test your own ideas.
If you have questions concerning SWAP, you can always contact Jos van Dam.