GEOtop is a distributed model of the mass and energy balance of the hydrological cycle. GEOtop is applicable to simulations in continuum in small or relatively large mountain catchments. GEOtop deals with the effects of topography on the interaction between energy balance (evapotranspiration, heat transfer) and hydrological cycle (water, glacier and snow).
To start with GEOtop probably the best way is to read the two most general papers first.
Rigon, R., Bertoldi, G., & Over, T. M. (2006). GEOtop: A Distributed Hydrological Model with Coupled Water and Energy Budgets. Journal of Hydrometeorology, 7, 371–388.
Endrizzi S., Gruber S., Dall’Amico M., Rigon R., GEOtop 2.0.: Simulating the combined energy and water balance at and below the land surface accounting for soil freezing, snow cover and terrain effects, Geosci. Model Dev., 2014
- The older versions: Up to version 0.5
- The most recent ones, up to version 2.0: The addition of Land atmosphere interactions, and beyond.
The (not-so-out-of-date) manual, can be found here.
Finally if you want to execute GEOtop, you can find the executable by following the links:
Please observe that these executables assume the use of the MeteoIO libraries, for input data interpolation and treatment, and not at all the use of the internal routines, called meteodistr. Therefore some of the examples, based on the latter routines, could not work.
The source code of GEOtop 2.0 with detailed documentation is available at the following link:
Stefano Endrizzi, is maintaining is own source code at:
Add-ons were developed to deal with landslide triggering and vegetation growth. An experimental version was built inside the Object Modelling System to have the capability to deal with various calibrators and other tools.
A paper describing the various uses of this type of models can be found here.
The overall set of information, including new directions, are here.