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The global gradient-based groundwater model framework G³M-f is an extesible model framework.
Its main purpose is to be used as a main building block for the global groundwater mode G³M.
G³M is a newly developed gradient-based groundwater model which adapts MODFLOW ( principles for the global scale.
It is written in C++ and intended to be coupled to the global hydrology model WaterGAP (, but can also be used for regional groundwater models and coupling to other hydrology models.
While it is intended to be used as a in memory coupled model it is also capable of running a standard standalone groundwater model.

Archive DOI: pending