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The Global Greenhouse Gas Watch (G3W) initiative is crucial for supporting the objectives of the Paris Agreement by improving the monitoring of greenhouse gas (GHG) net fluxes globally. Through enhanced observational networks and advanced data integration, G3W aims to coordinate a global technical framework to provide precise, actionable data on GHG net fluxes, helping countries track progress and make informed decisions in their climate actions.

The G3W will provide global monthly net fluxes of carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O) with 1° × 1° geographic latitude-longitude grid resolution (about 100x100 km spatial resolution), aiming to reduce uncertainties and improve the reliability of GHG monitoring.

This initiative is also instrumental in addressing data gaps in critical regions, thereby enabling a more accurate assessment of global GHG net flux.

G3W Implementation

The G3W Implementation Plan is built around six key pillars, ranging from Observing System to User Engagement, with an additional vital focus on Capacity Building. Explore each component of G3W in greater detail.

G3W Governance

On June 10th, 2024, the G3W plans were unanimously endorsed by the WMO Executive Council (EC-78) through Resolution 3.2/1. This resolution marks the beginning of the G3W implementation phase, including forming a G3W Joint Advisory Group (AG-G3W), co-chaired by INFCOM and Research Board, with the support of SERCOM.