ERGOM is a biogeochemical model which was developed at Leibniz Institute for Baltic Sea Research, Warnemuende, Germany by Thomas Neumann and Wolfgang Fennel. It incorporates the nitrogen and phosphorus cycle.

Originally developed for the Baltic Sea, the model is specifically strong in representing processes related to hypoxia and anoxia. However, due to the generality of the processes described, the model can be also used for other seas and is e.g. also used for modelling the biology of the Benguela upwelling system.

ERGOM is free software and has users in several institutes and universities around the Baltic Sea.

ERGOM scheme
Schematic view of ERGOM state variables and processes