Remedy 1: Further deployments and refinements of the GAIA-CLIM approach

To develop, refine, and deploy a system-of-systems measurement maturity assessment as developed by GAIA-CLIM across a range of use cases to determine the degree to which it is potentially applicable across non-satellite observing platforms and problems. Already under way for the Arctic domain under the H2020 INTAROS project in the context of the Copernicus Climate Change Service Evaluation and Quality Control program, its use and further development could be undertaken across a broader range of cases and with a range of international programmatic cases. This would constitute further refinement and proof-of-concept testing of the applicability, utility, and value of a measurement system maturity assessment approach to enable subsequent adoption. This testing should include a consideration of applicability across a diverse range of observational networks and across the full range of observational domains (surface, atmospheric, oceanic, terrestrial, hydrological, cryospheric). This will permit an evaluation of the value of the measurement maturity assessment, as well as its fitness-for-purpose for applications such as the Copernicus Climate Change Service and the WMO Integrated Observing System (WIGOS).