Supply Chain Greenhouse Gas Emission Factors for U.S. Commodities

A single Excel file 'SupplyChainGHGEmissionFactorsv1.4.0.xlsx' contains sheets:

1. 'CO2e' for the Factors in kg CO2e (carbon dioxide equivalent) per USD 2024 output of the commodity, where the AR6 GWP-100 values have been applied to each gas and summed
2. 'byGHG' for the Factors in kg gas per USD 2024 output of the commodity (before GWP is applied). 

The attached PDF 'About the Supply Chain Greenhouse Gas Emission Factors v1.4.0.pdf' provided a full description of the background, methods, a quantitative summary of the dataset, use of the dataset, a comparison to the previous version, and an analysis of the correlation between price change and Factor change. 

'SI_RelativeChangefromv1.3.0tov1.4.0inSEFs.xlsx' is supporting information showing relative change in the SEFs with Margins from the previous version to the current version, also with sheets for CO2e changes and by GHG.

'USEEIOv2.6.0-phoebe-23.rds' is the USEEIO model in native R format used to generate the Factors. An excel version of USEEIOv2.6.0-phoebe-23 is available at https://zenodo.org/records/17457336.