The Greenhouse Gas (GHG) Monitoring Project for the Global Stocktake 2023

The COP26 Japan Pavilion Seminar
2nd November 2021, 15:00-16:30 (UTC+0) at the Japan Pavilion


Time (GMT)
15:00 Opening remarks
Yutaka Shoda, Ministry of the Environment (MOE)
Part 1: Scientific highlights and knowledge gaps
15:05 Project for the Global Stocktake 2023
Akihiko Ito, National Institute for Environmental Studies (NIES)
15:15 Decade-long global GHG observation by GOSAT towards the global stocktake
Hiroshi Suto, Japan Aerospace Exploration Agency (JAXA)
15:25 Satellite data helping estimation and evaluation of regional CO2 and CH4 fluxes
Prabir Patra, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
15:35 Pilot national-scale estimates of carbon dioxide and methane emissions and removals from space-based measurements
David Crisp, Jet Propulsion Laboratory (JPL)/California Institute of Technology (Caltech), USA
15:45 The UNFCCC BUR preparation in Mongolia using GOSAT satellite data and its application to other countries
Masataka Watanabe, Chuo University
Part 2: Q&A and Panel discussion
15:55 Q&A and discussion
Ito, Suto, Crisp, Patra, Watanabe, Nobuko Saigusa (NIES), Moeko Yoshitomi (MOE)
Moderator: Tomohiro Oda, Universities Space Research Association (USRA), USA


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.


  • Ministry of the Environment, Government of Japan (MOE)
  • Japan Aerospace Exploration Agency (JAXA)
  • National Institute for Environmental Studies, Japan (NIES)

to be confirmed


  • Ministry of the Environment, Government of Japan
  • Japan Aerospace Exploration Agency
  • National Institute for Environmental Studies, Japan