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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.

Further information on the Integrated Farm System Model is available at:

This software was last updated on February 8, 2022.


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.

Further information on DairyGEM is available at

The software was last updated on September 28, 2016.


Projected Climate Data for IFSM

Downscaled climate data (1950 to 2100) are available for 78 locations across the United States. Each location includes 18 climate files created using 9 general circulation models and 2 projected emission scenarios. Those files can be accessed at: