Community Emissions Data Systems (CEDS): Emissions to 2020

Data on historical trends and spatial distribution of greenhouse gas emissions and air pollutants is central to our understanding of their past and current impacts on health and the global environment. The Community Emissions Data Systems (CEDS) produces historical anthropogenic emissions by country, sector, and fuel, recently updated to v_2021_04_21 extending to 2019 (see Figure). Recent improvements include updated default and country inventory data, updated energy data, improved assumptions for BC/OC from coke production in China, improved trends for emissions from petroleum production over time, and lower assumed biomass consumption in Nigeria and Ethiopia. We will present the next update to historical trends out to 2020, which will reflect the global impact of changes in energy consumption during the first part of the COVID-19 pandemic. In addition to general improvements, we are breaking out sectors into more detail and adding satellite-driven point source emissions to the inventory. Providing more detailed sectors (such as refining) and pinpointing pollutants from specific sources (power plants, refineries, metal smelters) can provide more accurate emissions data for models. The breakdown to finer resolution allows us to use more precise data from satellites and other sector specific driver data, which increases spatial and temporal accuracy. Figure: CEDS Emissions by Sectors 1990-2019, showing trends for 9 emissions compared to CMIP6. DOI: 10.5281/zenodo.3592072, https://github.com/JGCRI/CEDS