Davos received the status of an ICOS Class 1 station in November 2019. It provides the 8th longest time series for CO2 and H2O vapour fluxes globally (since 1997) and is the only subalpine Class 1 forest ecosystem station within ICOS. The coniferous forest is located at 1639 m a.s.l. and mainly consists of Norway spruce trees, which are about 30 meters tall and up to 450 years old. Davos is part of Swiss FluxNet.
Measurements at the Davos station are jointly organized by ETH Zurich, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) and Swiss Federal Laboratories for Materials Science and Technology (Empa) / National Air Pollution Monitoring Network (NABEL). The infrastructure is provided by the Federal Office of Environment (FOEN).
The ICOS relevant measurement programme at Davos is organised as follows:
- Greenhouse gas measurements (CO2, H2O, CH4 and N2O) using the eddy covariance technique and custom-made automated soil chambers, soil meteorology (ETH Zurich)
- Meteorology (Empa)
- Measurements of tree growth, stem CO2 exchange as well as leaf area index, biomass, N losses etc. (WSL)