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  • Station or cluster: CryoNet Station
  • Type: Reference
  • Attribute(s): Cal/val, Research
  • Belongs to cluster: Davos
  • WMO ID (if any):
  • Shape: polygon
  • Latitude, longitude: 46.82963, 9.80923
  • Altitude and/or range (m): 2536
  • Landscape: Mountain
  • Year established: 1937
  • Year-round? Yes
  • Operations contact: Marc Ruesch
  • Science contact: Charles Fierz
  • Data contact: Joel Caduff
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Weissfluhjoch Versuchsfeld (WFJV)
Reference CryoNet Station Information

In autumn 1936, the Expert Commission for Snow and Avalanche Research (now the SLF) in Switzerland built the first snow laboratory on the Weissfluhjoch. Since these early days, SLF employees have been observing the weather and snow conditions on the adjacent test site daily. The site is located on a flat area of the Dorftälli, approximately 150 m below the Weissfluhjoch towards Davos, at an altitude of 2536 m. In view of the good accessibility and the numerous avalanche-prone slopes in the vicinity, researchers have conducted countless major experiments and studies here in the fields of snow mechanics, snow metamorphism, snow characterisation and measuring methodology. They have also tested the prototypes of various instruments, calibrated remote sensing products, and used the data collected at the test site to compare their snowpack models with those of other scholars.
The Weissfluhjoch test site is now the only one in the world at this altitude that has a daily record of snow depths and snowfall dating back more than 75 years.
An Automatic Weather Station operating since ~ 1990 is also located on the Versuchsfeld, including high quality radiation and albedo measurements.

Interactive map available here: http://bit.ly/1qEgXRJ

Other Networks to Which This CryoNet Station Belongs

Other relevant measurement method documents:

SLF-Beobachterhandbuch: Vergleichsstationen

International Classification for Seasonal Snow on the Ground

Data Information


Marty, C. and Meister, R.: Long-term snow and weather observations at Weissfluhjoch and its relation to other high-altitude observatories in the Alps, Theoretical and Applied Climatology, 110(4), 573–583, doi:10.1007/s00704-012-0584-3, 2012.

Additional Information Documents


The measurements made at Weissfluhjoch Versuchsfeld (WFJV) are listed in the following tables. (Note: If End Year is blank, measurements are ongoing.)

Cryosphere Measurements

Element Variable Start Year End Year Frequency
SnowSnow on the ground (WMO code 0957)1937Continuous
SnowSnow water equivalent1941Continuous
SnowSnowpack profile1938Continuous
SnowSnowfall depth1937Continuous
SnowWater equivalent of snowfall1941Continuous
SnowSurface temperature1996Continuous
FrozengroundGround temperature2015Continuous

Atmosphere Measurements

Element Variable Start Year End Year Frequency
MetAir temperature1996Continuous
MetHumidity/vapour pressure1996Continuous
MetWind speed and direction1996Continuous
MetAir pressure1996Continuous
MetSensible and latent heat2015Continuous
RadiationDownwelling shortwave1996Continuous
RadiationUpwelling shortwave1996Continuous
RadiationDownwelling longwave1996Continuous
RadiationUpwelling longwave1996Continuous

Measurement Notes and Other Measurements

Category Description or List
SnowLysimeter (5 m^2) start 1992;

snow pillow start 2005; weighing gauge start 20yy;

Seasonally frozen groundmeasurements at depths of 10, 30, and 50 cm
AtmosphereTotal precipitation: daily values from 1974 - 1982, not digitalized

Last updated: 30 April 2018