Registering for a COMET-Farm account allows you to store your management information safely and securely, so that you may later return to update your information or try other management scenarios. The USDA will not use, share, or view your information; nor will any other user of the tool. Please see the Privacy Policy for more information.
The system uses your information on management practices together with spatially-explicit information on climate and soil conditions from USDA databases (which are provided automatically in the tool) to run a series of models for each potential source of greenhouse gas emissions. For the Field Module, estimates are made using the DayCent dynamic model, which is the same model used in the official U.S. National Greenhouse Gas Inventory. Emissions in the Livestock Module are estimated using statistical models based on USDA and university research result and are similar to models used in the U.S. National Inventory.