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United States Department of Agriculture

Agricultural Research Service


Integrated Farm System Model (IFSM)

The Integrated Farm System Model (IFSM) is a process-based simulation of dairy, beef, and crop farming systems. This whole farm model provides a tool for evaluating the long term performance, economics, and environmental impacts of production systems over many years of weather.

Dairy Gas Emissions Model (DairyGEM)

The Dairy Gas Emissions Model (DairyGEM)  uses process level simulation and process related emission factors to predict ammonia, hydrogen sulfide, VOC and greenhouse gas emissions along with the carbon, energy and water footprints of dairy production systems.
Last Modified: 11/30/2015
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