Human-caused greenhouse gas (GHG) emissions drive climate change. This dataset includes time series of emissions data by country using four measures that differ in scope and methodology: Climate Watch, PIK PRIMAP-hist, UNFCCC and GCP. The Paris Agreement requires participating countries to submit emission inventories that are based on activities within their territory. All the inventories on Climate Watch are based on this production-based accounting. This dataset is published via Climate Watch, a free online platform designed to empower policymakers, researchers, media and other stakeholders with the open climate data, visualizations and resources they need to gather insights on national and global progress on climate change.