TOSCA represents the French Earth and environmental sciences community and is tasked with making recommendations to CNES’s Earth sciences team on: The space programme science priorities and direction, funding priorities for space research proposals and, where necessary, any matters concerning space programmes and projects in its science fields

TOSCA works on science foresight and is consulted by CNES’s Head of Earth Sciences in the event of programmatic changes and on any proposed decision concerning space programs and projects related to this field. Biomass is one TOSCAs scientific programs.