The Database of Road Transportation Emissions (DARTE) was recently updated to include annual emissions through the year 2017.
This dataset from the NASA Carbon Monitoring System (CMS) program provides a 38 year inventory of annual on-road carbon dioxide (CO2) emissions for the conterminous United States. The dataset was compiled from roadway-level vehicle traffic data and state-specific emissions factors for multiple vehicle types on urban and rural roads according to the Database of Road Transportation Emissions (DARTE). Emissions are provided annually for 1980 to 2017 as a continuous surface at a spatial resolution of 1 km.
Although the United States has 5% of the world's population and 30% of the world's automobiles, it emits 45% of global transportation CO2 emissions (1.57 billion metric tons in 2012). DARTE and its derived data products can provide valuable information to local and regional climate change mitigation initiatives by providing detailed city-scale greenhouse gas emissions estimates and a tool to assess response to policy.
NASA's Carbon Monitoring System (CMS) is designed to make significant contributions in characterizing, quantifying, understanding, and predicting the evolution of global carbon sources and sinks through improved monitoring of carbon stocks and fluxes, and its data products are designed to inform near-term policy development and planning. See all ORNL DAAC data from CMS.
Data Citation: Gately, C., L.R. Hutyra, and I.S. Wing. 2019. DARTE Annual On-road CO2 Emissions on a 1-km Grid, Conterminous USA, V2, 1980-2017. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1735
Data Center: ORNL DAAC