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COMET

CarbOn Management Evaluation Tool

Carbon, in the form of carbon dioxide (CO2) in the atmosphere traps heat. It raises the temperature of the air and contributes to what is known as the "greenhouse effect". To help reduce the amount of carbon in the atmosphere, various ways to store or "sequester" carbon are being investigated. One method is to sequester carbon as organic matter in soils ("humus") and in vegetation. Sequestering carbon helps to reduce the amount of CO2 in the atmosphere.

The CarbOn Management Evaluation Tool (COMET) is an online management tool that provides a simple and reliable method for estimating changes in soil carbon sequestration, fuel, and fertilizer use resulting from changes in land management. COMET calculates in real time the annual carbon flux using a dynamic Century model simulation.

Users of COMET specify a history of agricultural management practices on one or more parcels of land. The results are presented as ten-year averages of soil carbon sequestration or emissions with associated statistical uncertainty values. Estimates can be used to construct a soil carbon inventory for the 1605(b) program. 

COMET-Planner™ 
An evaluation tool designed to provide approximate greenhouse gas mitigation potentials for NRCS conservation practices.  Carbon sequestration and greenhouse gas emission reduction values are intended to provide generalized estimates of greenhouse gas impacts of conservation practices for initial planning purposes.  Those interested in conducting more detailed analysis of on-farm greenhouse gas emissions are encouraged to utilize COMET-Farm.

COMET-Farm™   
A whole farm and ranch carbon and greenhouse gas accounting system.  This tool guides the user by describing current farm and ranch management practices and examines alternative future management scenarios.  Once complete, a report may be generated comparing the carbon changes and greenhouse gas emissions between current management practices and future scenarios.