CH-AWS, Alp Weissenstein
Contents
Site Description
Managed (grazed) alpine grassland at 1900–2500 m asl, mainly on calcareous bedrock. The area and the adjacent facilities are part of the ETH Research Station. Eddy covariance flux measurements were carried out in campaign mode during summer in 2006 to 2014 (tower coordinates: 46°34’59.2″N and 9°47’26.3″E at 1978 m asl). Since 2014, measurements are running continuously.
Location
- Altitude: 1978 m a.s.l.
- Site name: Alp Weissenstein, Kt. Graubünden, Switzerland
- Parcel name: Hirschwiese 3C (location of eddy covariance station)
- Land use: Grazing 1-2 times per year, summer-grazed pasture
- Coordinates: 46°34’59.2″N 9°47’26.3″E (46.583102, 9.790624) (Google Maps)
- Location description: –
- FLUXNET ID: CH-Aws
Climate
All numbers shown are for the time period 2015-2021.
Air temperature
- Average air temperature: 4.0°C
- Warmest year: 2020 (4.5°C)
- Coolest year: 2021 (3.3°C)
- Highest measured air temperature: 26.9°C (26 Jun 2019, half-hourly average between 14:30 and 15:00)
- Lowest measured air temperature: -19.9°C (27 Feb 2018, half-hourly average between 18:30 and 19:00)
Numbers updated 8 Feb 2022
Nearby meteo stations
- Meteoswiss: Samedan (Google Maps) Data since: 1 Jan 1980 | 1709 m a.s.l. | in 9.3 km distance
- Meteoswiss: Bergün / Latsch (Google Maps) Data since: 1 Jan 1973 | 1408 m a.s.l. | in 5.7 km distance
Vegetation
- Land cover (IGBP land classification): coming soon
- Community: Deschampsio cespitosae-Poetum alpinae (at research site), Trifolio thalii-Festucetum violoceae (slope above research site)
- Height: 10-40cm
- Leaf area index (LAI): max. 4 m2 m-2
Soil
- Geology: Underlying material built by moraines from the Val Bever glacier and by limestone debris from the steep valley slopesthat overlie the glacial formation.
- Soil type: slightly humous to humous sandy loam (Hiller et al., 2008)
- Soil texture: coming soon
- Soil analysis:
Data
Current flux products
Available Level-1 fluxes
- For info about the different flux levels, see Flux Processing Chain
Eddy covariance raw data files
- Overview of eddy covariance raw data files since 2006: EC Raw Binary Format (CH-AWS)
Meteorological data
- Plots of recent meteo data (view on Grafana)
- List of meteorological variables currently recorded at the site: List of Variables (view on Grafana)
Dataflow
Photos
You are here: CH-AWS, Alp Weissenstein
Webcam
- Most recent image from main tower
Fieldbook
News
Download Report 2025: Data Sharing
The demand for open-access ecosystem data from Swiss FluxNet reached an all-time high in the past year. Our newest download statistics show that researchers and the public downloaded 11'087 datasets in 2025 (which equals to more than 30 downloads per day on average), representing an increase of 33% compared to ... Read More
Short Report – QA/QC Meeting 18 Dec 2025
The new Short Report with an overview of recent fluxes and meteo data can be downloaded from here: Short Report - QAQC Meeting 18 Dec 2025 ... Read More
Added: Info about logging scripts for EC raw data
Added info about the used logging script to pages giving info about the eddy covariance raw data files(e.g., here for CH-FRU). The logging script sonicread (PDF) was used at all sites since 2004. In recent years (starting in 2023 with the site CH-FRU), we started to migrate EC raw data ... Read More
More Info
Last Updated on 22 Dec 2025 12:07