Joint Study Group on WMO Greenhouse Gas Monitoring (SG-GHG)

Establishment of the joint Study Group on WMO Greenhouse Gas Monitoring

Circular Letter 20441/2022/I/GHG_en



SG-GHG-1   Date: 8 August, 2022

SG-GHG-2   Date: 22 August, 2022

SG-GHG-3   Date: 6 September, 2022

SG-GHG-4   Date: 20 September, 2022


Related activities

WMO International Greenhouse Gas Monitoring Symposium, 30 January-1 February, 2023  GO>>


Terms of Reference

Approved, August 22, 2022

Full text is available here.


a. Oversee and guide the further development of the concept for the GHG monitoring system, as per EC-75/Resolution 4, taking into account the need to

  • Identify the primary users of GHG information and services and establish the priority needs of these users;
  • Secure continued broad support for this development in the existing greenhouse gas monitoring community through building on existing activities and coordination mechanisms;
  • Act without delay, given the importance of providing input to currently ongoing First Global Stocktake by the Parties to the Paris Agreement;
  • Engage, as appropriate, all elements of the WMO governance structure in this development;
  • Engage and closely collaborate with the wider scientific community and other UN agencies international entities (e.g. CEOS; CGMS; GEO; IOC/GOOS) with GHG monitoring activities, in particular the land surface and ocean observation and modeling communities;
  • Minimize overlap with WMO activities by clearly positioning this infrastructure with respect to GAW and IG3IS;

b.  Aim to present an early version of the draft proposal for the concept of this at INFCOM-2 and SERCOM-2 in October 2022 and the Research Board in December 2022 for their feedback and preliminary endorsement;

c. Convene a WMO Greenhouse Gas Monitoring Symposium in January 2023, with the aim of seeking input to the concept from a broad group of scientific, operational and policy-setting stakeholders;

d. Provide a draft concept proposal to EC-76 in February 2023, with the aim of getting EC recommendation for approval by Congress-19 in May 2023;

e. Take every opportunity to further socialize and seek input to the development of this concept, e.g., via scientific conferences, IPCC meetings, UNFCCC Workshops, COP27, IOC meetings, WMO Climate Policy Advisors.


Background Materials

  •      System Design

                         African network design
                         GEO Carbon Strategy
                         CEOS strategy for Carbon Observation