The Ministry of the Environment of Japan has started a research project since April 2021 to build a monitoring, reporting, and verification support capability for global emissions of GHGs related to human activities in order to deliver a prototype system by 2023, i.e., the year of the first UNFCCC’s Global Stocktake. A key concept to attain is greater confidence in inversion of atmospheric observations, for estimation of carbon fluxes. Detailed measurements made by dedicated satellites and in-situ networks will be used in an operational GHGs monitoring, and develop validation support capacity that will combine the observational data with traditional GHGs emissions inventories in a data-assimilation system.
The combined data will enable transparent and consistent quantitative assessment of GHGs emissions and their trends globally, at the scale of countries, megacities and the most significant point source (large power stations). We will show the research activities in Japan using satellite and in-situ observations for making contributions to monitor greenhouse gas emission reductions, especially to the Global Stocktake of the Paris Agreement. In addition to speakers from Japan, we invite a speaker from the United States, who would talk about international activities and expectations to researches in Japan.