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
Innovation in Halocarbon Measurements and Emission Validation
• 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. doi.org/10.2533/chimia.2020.136
• 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. doi.org/10.1038/s43017-020-0048-8
• 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. doi.org/10.1038/s41586-019-1193-4
• 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. 2019, 19, 3481-3492. doi.org/10.5194/acp-19-3481-2019
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.