The World Meteorological Congress at its 19th session (Cg-19, 22nd May - 2nd June 2023) approved the conceptnoteand established a new global greenhouse gas monitoring initiative that aims to support WMO Members in mitigation actions undertaken to implement the Paris Agreement. This concept has been developed in a close collaboration between WMO and partner organizations dealing with greenhouse gases and carbon cycle.
The Global Greenhouse Gas Watch (GGGW or G3W, hereafter G3W) fills critical information gaps and provides an integrated, operational framework that brings together all observing systems, as well as modelling and data assimilation capabilities in relation to greenhouse gas monitoring, striving to reduce the uncertainty in assessing the efficacy of climate action.
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The G3W Implementation Plan (G3W-IP hereafter) is organized in a way that allows WMO Members to understand and facilitate the actions required within the current financial period (2024-2027) to advance the G3W Implementation and Pre-operational Phase (G3W-IPP) (Figure 1). The G3W Initial Operational Phase (G3W-IOP) is foreseen in the next financial period (2028-2031), including the consolidation of the G3W systems configuration for the 2ndGlobal Stocktake (GST-2) and this is provided in the outlook section.
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This phase of the G3W development is labelled Enhanced Operational Phase (G3W-EOP) and it aims at integrating maturing technologies from satellite remote sensing, ground-based networks, conventional and data driven modelling approaches stemming from artificial intelligence, with the goal of reducing uncertainties, and increasing the reliability of the GHGs monitoring systems.
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Two governance actions have been recommended by the Joint Study Group on Greenhouse Gas Monitoring (SG-GHG):
| Action GOV1: Create a working structure under Commission for Observation, Infrastructure and Information Systems (INFCOM) for coordination of technical implementation activities. The G3W Advisory Group should be co-chaired by those designated by INFCOM and the Global Atmosphere Watch (GAW) and is expected to consist of up to 20 members, representing, the Commission for Weather, Climate, Hydrological, Marine and Related Environmental Services and Applications (SERCOM), and the Research Board (RB) and different areas of the expertise in greenhouse gases. |
| Action GOV2: UtilizeUtilize the WMO Climate Policy Advisers Group for the high-level positioning and outreach with adjustment to the Terms of Refence (ToRs) and membership to comprehensively cover the G3W topics. |