He is a member of the scientific steering committee of the Large Scale Biosphere Atmosphere Experiment in Amazonia (LBA) and was chairman of the IGBP’s Integrated land Ecosystem Atmospheric Processes Study (ILEAPS).
Er ist Mitglied des wissenschaftlichen Lenkungsausschusses der „Large Scale Biosphere Atmosphere Experiment in Amazonia (LBA)“ und war Vorsitzender des internationalen wissenschaftlichen Programms IGBP „Integrated Land Ecosystem Atmospheric Processes Study (ILEAPS)“.