Climate Gases

The main activities of the Group for Climate Gases are centered around the observations of anthropogenic trace gases in the atmosphere. Data are exploited for detection of sources and sinks of these gases as well as trends and their influence on atmospheric chemistry.

Trace Gas Measurements at Jungfraujoch

The recently installed heated air inlet lines at Jungfraujoch: Spectacular video and pictures

CLIMGAS-CH (HALCLIM) / AGAGE: Continuous measurements of halogenated greenhouse gases at the high Alpine site of Jungfraujoch for identification of trends and regional European emissions.

CO2, CH4, N2O and CO: The important greenhouse gases carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and carbon monoxide (CO) are also continuously measured at Jungfraujoch.

Volatile Organic Compounds VOC

NABEL VOCs: Continuous measurements of volatile organic compounds (VOCs) at the NABEL sites of Dübendorf (suburban), Beromünster (rural) and Jungfraujoch (high Alpine, background).

ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.

Advancement Analytical Techniques
Analytical techniques are constantly improved. The Group for Climate Gases has developed a large expertise in trace gas analysis. The team is specialized in gas chromatography and mass spectrometry analysis, allowing to detect as low as 1 ppq (fmol/mol) of a given trace gas in the atmosphere.
Innovation in Halocarbon Measurements and Emission Validation
IHALOME: Atmospheric halocarbon measurements during three field campaigns in Switzerland, Estonia and the Netherlands; assessment of regional abundances, emissions and sources of halocarbons; search for new halogenated greenhouse gases by advanced analytical measurement techniques
Latest Publications

•   Reimann, S.; Vollmer, M. K.; Hill, M.; Schlauri, P.; Guillevic, M.; Brunner, D.; Henne, S.; Rust, D.; Emmenegger, L. Long-term observations of atmospheric halogenated organic trace gases. Chimia 2020, 74 (3), 136-141.

•   Chipperfield, M. P.; Hossaini, R.; Montzka, S. A.; Reimann, S.; Sherry, D.; Tegtmeier, S. Renewed and emerging concerns over the production and emission of ozone-depleting substances. Nat. Rev. Earth & Environ. 2020.

•   Rigby, M., Park, S., Saito, T., Western, L. M., Redington, A. L., Fang, X., … Young, D. (2019). Increase in CFC-11 emissions from eastern China based on atmospheric observations. Nature, 569(7757), 546-550.

•   Vollmer, M. K.; Bernard, F.; Mitrevski, B.; Steele, L. P.; Trudinger, C. M.; Reimann, S.; Langenfelds, R. L.; Krummel, P. B.; Fraser, P. J.; Etheridge, D. M.; et al. Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O) in the atmosphere. Atmos. Chem. Phys. 201919, 3481-3492.


more publications

Completed Projects

HIGHGAS: Development of traceable standards with long-term stability for high impact greenhouse gases.

MEDEMPA: Building of the Medusas for Norway and China.

LEMURE: The LEMURE project will advance methods to obtain reliable and independent emission numbers of non-CO2 greenhouse gases, which can be used to check emissions to be reported by the signatory countries within the Kyoto Protocol.

SOGE: To develop a new cost-effective long-term European observation system for halocarbons.

Mehal-GG: First-time top down estimation of halocarbon emissions for Southeastern Europe and the Iberian Peninsula, based on atmospheric measurement campaigns in Finokalía (Crete, Greece) and  Pic du Midi (Pyrenees, France).

ENOVO: Campaign measurements of oxidised volatile organic compounds (OVOCs) at Zürich (urban) and Jungfraujoch (high Alpine, background).

SASHA-THT: The PhD thesis “Sources and Sinks of Hydrogen in the Atmosphere during Transition to Hydrogen-based Transportation” commenced in the summer of 2007.