DOI: 10.16904/envidat.429
title: Swiss FluxNet Site Davos

description: The Swiss FluxNet Site Davos is a managed subalpine evergreen forest, located on the Seehorn mountain near Davos in the Swiss Alps. The site is dominated by Norway spruce. The tower is owned by the Federal Office for the Environment (FOEN). 
Ecosystem flux measurements of CO2, H2O (since 1997) as well as CH4 and N2O (since 2016) are performed with the eddy covariance method. 
In addition to Swiss FluxNet, the site is part of the National Air Pollution Monitoring Network (NABEL), the Long term Forest Ecosystem Research (LWF), the biological drought and growth indicator network (TreeNet) and of ICOS Switzerland (Integrated Carbon Observation System). Since November 2019, the site is an ICOS Class 1 Ecosystem station.
Measurements
- Ecosystem flux measurements of CO2, H2O vapour (since 1997) as well a CH4 and N2O (since 2016) are performed with the eddy-covariance method. This method is based on measurements of trace gas mixing ratios, using infrared gas analyzers (for CO2, H2O vapor) and laser spectrometers (for CH4 and N2O), combined with wind speed and wind direction measurements, using 3D sonic anemometers. To resolve the short-term turbulent fluctuations in the atmosphere, very fast measurements are needed: we measure at 10-20 Hz, i.e., 10-20 times per second. To assess the energy budget of each ecosystem, also radiation sensors and soil climate profiles are installed at the site.
- Sub-canopy eddy fluxes (CO2, H2O, since 2023 also CH4).
- Continuous profile concentration and forest floor flux measurement of CO2, H2O, CH4, N2O.
- Auxiliary micrometeorology and soil climate measurements.
Data availability
Near real-time flux and meteo data uploaded daily to the ICOS Carbon Portal. Processed flux and meteo data are also available from the European Fluxes Database Cluster and part of Fluxnet2015 dataset.
Data policy
ICOS data license: 
[https://www.icos-cp.eu/data-services/about-data-portal/data-license](https://www.icos-cp.eu/data-services/about-data-portal/data-license)
Detailed site info: 
[https://www.swissfluxnet.ethz.ch/index.php/sites/ch-dav-davos/site-info-ch-dav/](https://www.swissfluxnet.ethz.ch/index.php/sites/ch-dav-davos/site-info-ch-dav/)
description: Resource Title: Site description
 Size: 320116 bytes
 Format: application/pdf
 URL: https://www.envidat.ch/dataset/861bec26-8e58-4796-802d-6ebad6a3484f/resource/49929929-d5d9-43de-bf2a-298230753b46/download/swissfluxnet_dav_sitedescription.pdf
 Description:
description: Resource Title: Data access
 Size: 1024 bytes
 Format: No Info
 URL: https://data.icos-cp.eu/portal/#%7B%22filterCategories%22:%7B%22station%22:%5B%22iES_CH-Dav%22%5D%7D%7D
 Description: The flux and meteo data of the Swiss FluxNet site Davos are openly available. Near real-time flux and meteo data are uploaded daily to the ICOS Carbon Portal.
description: Resource Title: Processed data
 Size: 1 bytes
 Format: No Info
 URL: http://www.europe-fluxdata.eu/home/site-details?id=CH-Dav
 Description: Processed flux and meteo data are available from the European Fluxes Database Cluster.
description: Resource Title: Fluxnet2015 dataset
 Size: 1024 bytes
 Format: No Info
 URL: https://fluxnet.org/data/fluxnet2015-dataset/
 Description: Processed flux and meteo data are also part of the Fluxnet2015 dataset.