Methodology / Tool 
This interactive web mapping tool was developed to help communities in the United States estimate the local greenhouse gas (GHG) impacts of their forests and trees. It combines methods outlined in the ICLEI Greenhouse Gas Protocol’s Appendix J with national data sources to derive a first-order approximation of annual GHG impacts over a given time period. Results can be saved as a report and entered into ICLEI’s ClearPath GHG reporting tool.
The calculator does not provide estimates that can be used for selling carbon credits, nor does it provide a methodology to estimate the GHG impacts of specific mitigation activities. The estimates reflect direct GHGs only, and do not measure the indirect or non-GHG benefits (or land-use trade-offs) associated with local changes in forest and tree cover.
This tool was developed with support from the Doris Duke Charitable Foundation and the Climate and Land Use Alliance.
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