• 46.547°N 7.985°E 3580 m a.s.l.

Observational platform

Switzerland

• ETH Zurich
• Paul Scherrer Institute (PSI)
• Swiss Federal Laboratories for Materials Science and Technology (EMPA)

https://www.actris.ch/

• Stefan Reimann
  PI deputy
• Martin Gysel-Beer
  Facility PI

The ACTRIS national facility at Jungfraujoch has a long history of providing continuous atmospheric observations since ~1995, and it also is a global station of the Global Atmosphere Watch programme. The observatory is hosted by the Foundation High Altitude Research Stations Jungfraujoch and Gornergrat (HFSJG), which serves as a base infractructure. It is a fixed ground-based observatory situated on a mountain saddle at high altitude in the Swiss alps. The surface surrounding the station either is blank rocks or glaciers and snow all year round. The site is inside clouds around 40% of time.

The Jungfraujoch observatory is a high-altitude site ideally suited to study free tropospheric and aged polluted air masses. Saharan dust and wildfire plumes are regularly observed, volcanic ash plumes occasionally. The site also serves for aerosol-cloud interaction studies. The permanent in-situ observations comprehensively cover all three ACTRIS topical components, that is aerosol, clouds and trace gases. Additionally, remote sensing of trace gases are also performed.

• Bukowiecki et al. (2016). A Review of More than 20 Years of Aerosol Observation at the High Altitude Research Station Jungfraujoch, Switzerland (3580 m asl). Aerosol Air Qual. Res., 16(3), 764-788. https://doi.org/10.4209/aaqr.2015.05.0305
• Bianchi et al. (2016). New particle formation in the free troposphere: A question of chemistry and timing. Science, 352(6289), 1109-1112. https://doi.org/10.1126/science.aad5456