The European Space Agency (ESA) in collaboration with the Land Product Validation subgroup of the Committee on Earth Observation Satellites (CEOS) Working Group on Calibration Validation (WGCV) are inviting scientists and experts to share the latest results from their on-going research, at the 2023 Workshop on Land Product Validation and Evolution (LPVE23).

The workshop will be held at ESA/ESRIN, Frascati, Italy, from 12 to 14 June 2023, where it intends to address the following objectives:

• Review status and evolution of retrieval methods, calibration and validation (Cal/Val) approaches for satellite-derived terrestrial essential climate variables (ECVs)

• Revisit existing Cal/Val infrastructure and protocols and their readiness in the light of future satellite land missions, e.g., FLEX, BIOMASS, CHIME, LSTM

• 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