The following plots are automatically generated. The data represent raw data and have not undergone quality control.
Live webcam and meteorology data
Webcam source: SWITCH (www.switch.ch). Meteorology data provided by partner MeteoSwiss.
Aerosol number concentrations
Time series of total aerosol particle number concentrations. The measurements are performed with a Condensation Particle Counter (CPC) and a Scanning Mobility Particle Sizer (SMPS; integrated concentrations) at the Jungfraujoch Observatory (Sphinx), as well as with a CPC at the nearby East Ridge site. Measurements of Cloud Condensation Nuclei Concentrations (CCNC; at a supersaturation of 1%) are currently unavailable. Responsible partner: PSI.
Concentrations of Ice-Nucleating Particles (INPs)
Concentrations of Ice-Nucleating Particles (INPs) measured from Jungfraujoch Observatory. INPs are a small but important part of the total aerosol — they are the particles responsible for ice formation in clouds. Responsible partner: IAC, ETH.
Aerosol number size distributions
The size distributions of fine aerosol particles as measured by a Scanning Mobility Particle Sizer at Jungfraujoch Observatory. The colours indicate the number concentrations of particles of a given size: reds mean high particle concentrations while purples, blues and greens mean low particles concentrations. The particle sizes are indicated on the y-axis scale (mobility diameter). Responsible partner: PSI.
Aerosol optical properties: scattering and absorption
Time series of aerosol optical properties at different wavelengths measured at Jungfraujoch Observatory. The ability of aerosol particles to scatter light is represented by total and backwards-hemispheric light scattering coefficients measured by two separate instruments: a TSI and an AirPhoton nephelometer. Light absorption by aerosol particles is shown as aerosol absorption coefficients measured with a 7-wavelength aethalometer (AE33). Responsible partner: PSI.
Black carbon concentrations
Black carbon, or soot, is an important part of the total aerosol because it absorbs light and causes atmospheric warming. Black carbon is also a good tracer for pollution from vehicles and wildfires. At Jungfraujoch Observatory and the nearby East Ridge site black carbon mass concentrations are measured by absorption photometers (MAAP, AE33). Responsible partner: PSI.