Promote synergies and foster cooperation across existing Cal/Val Networks, identifying gaps and working towards the harmonization of adopted protocols

Report on recent field campaigns and promote adoption of metrological practices in Cal/Val, following the principles of Fiducial Reference Measurements (FRM) 

Report on latest progress on radiative transfer models and products inter-comparison exercises and discuss data harmonisation across sensors

Formulate recommendations for future land products and gather Cal/Val needs in terms of ground-based infrastructure and data availability, accessibility, timeliness