The Open-source Data Inventory for Anthropogenic CO₂ (ODIAC) is a 1 x 1 km global high-resolution fossil fuel CO₂ emissions data product. ODIAC first introduced the combined use of point source profiles and nighttime light satellite data to create high-resolution emissions spatial distributions and it has been intensively used in the carbon cycle research community. This manuscript describes the 2016 version of ODIAC data, the modeling approach, and future data production and model developments.