G3W Network Design Workshop
Observations are fundamental for G3W, for data assimilation, modelling and verification. A global GHG observation network is a complex system across almost all Earth system domains (land, ocean, atmosphere, and cryosphere) consisting of surface-based and space-based efforts. It includes a variety of initiatives and collaborations among international organizations, government agencies, research institutions, and private sector. Implementation of such observing system will require a common set of monitoring approaches and principles applied across observing networks for integration in WIGOS.
The GHG community should define whether and how tiered network structure can be adopted. The cost-efficient design of the observing network should be offered for the implementation to WMO member countries and international community utilizing common monitoring principles across domains. While the strategies for the development of the satellite segment of the GHG observing system are well established, the surface (including over the ocean) network design need further optimization.
To advance this task a dedicated hybrid G3W Network Design Workshop will be organized in Geneva, Switzerland on 7-9 October 2025. Members of the Task Team on G3W Networks and invited experts are the expected participants of this workshop.
The workshop will build on the preparatory work to be conducted by the Task Team over July-September 2025. The workshop will combine limited number of presentation and discussion sessions focused on the outputs of preliminary work of the Task Team and related studies to come up with the recommendations on the G3W network design. Initial priority is on carbon dioxide. Studies related to other greenhouse gases are also encouraged.
The topics addressed by the workshop include:
• Network optimization based on the results of model intercomparisons and satellite data utilization,
• Network optimization based on the footprint analysis,
• Optimization of the surface ocean observing networks,
• Results of the Observing System Simulation Experiments, including benefits and impact of the optimized network.
Please submit your abstract and register via a registration form by 20 August 2025. It is expected that your participation in the workshop is supported by your institution. If this is not possible, please contact WMO Secretariat regarding potential travel support.
