Today, ICOS Switzerland enters its new project phase! Funding by SNF (ICOS-CH Phase 3, 2021-2025) and in-house contributions will ensure continued measurements at the two ICOS Class 1 stations Jungfraujoch and Davos. With these two unique measurement stations and their exceptional geographical location in the central part of the Alps, ICOS-CH is an outstanding node within the ICOS RI network.