Matthias Hill

Swiss Federal Laboratories for Materials Science and Technology

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Stefan Reimann

Swiss Federal Laboratories for Materials Science and Technology

Martin K. Vollmer

Swiss Federal Laboratories for Materials Science and Technology

Paul Schlauri

Swiss Federal Laboratories for Materials Science and Technology

Myriam Guillevic

Swiss Federal Laboratories for Materials Science and Technology

Simon O’Doherty

University of Bristol

Stephan Henne

Swiss Federal Laboratories for Materials Science and Technology

Lukas Emmenegger

Swiss Federal Laboratories for Materials Science and Technology

Paul J. Fraser

Commonwealth Scientific and Industrial Research Organisation

Matthew Rigby

University of Bristol

Tae Siek Rhee

Korea Polar Research Institute

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Swiss Federal Laboratories for Materials Science and Technology

Centre National de la Recherche Scientifique

Paul Scherrer Institute

University of Bristol

CSIRO Oceans and Atmosphere

Scripps Institution of Oceanography

ETH Zurich

Deutsches Elektronen-Synchrotron DESY

University of California, San Diego

National Oceanic and Atmospheric Administration

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Atmospheric Histories and Emissions of Chlorofluorocarbons CFC-13(CClF[subscript 3]), ΣCFC-114 (C[subscript 2]Cl[subscript 2]F[subscript 4]), and CFC-115 (C[subscript 2]ClF[subscript 5]

Martin K. Vollmer Dickon Young Cathy M. Trudinger Jens Mühle Stephan Henne

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Additional file 2 of Automated fragment formula annotation for electron ionisation, high resolution mass spectrometry: application to atmospheric measurements of halocarbons

Figshare (2021)

Myriam Guillevic Aurore Guillevic Martin K. Vollmer Paul Schlauri Matthias Hill

Additional file 2. Zip file containing all input mass spectral data for ALPINAC, for the training and validation sets. There is one text file per compound.

Accelerator mass spectrometry

Fragment (logic)

10.6084/m9.figshare.16735693

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Additional file 3 of Automated fragment formula annotation for electron ionisation, high resolution mass spectrometry: application to atmospheric measurements of halocarbons

Figshare (2021)

Myriam Guillevic Aurore Guillevic Martin K. Vollmer Paul Schlauri Matthias Hill

Additional file 3. Zip file containing all output formulae produced by ALPINAC, for the training and validation sets, using the default settings. There is one text file per compound.

Fragment (logic)

10.6084/m9.figshare.16735696

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European Emissions of Halogenated Greenhouse Gases Inferred from Atmospheric Measurements

Environmental Science & Technology (2011)

Christoph A. Keller Matthias Hill Martin K. Vollmer Stephan Henne Dominik Brunner

European emissions of nine representative halocarbons (CFC-11, CFC-12, Halon 1211, HCFC-141b, HCFC-142b, HCFC-22, HFC-125, HFC-134a, HFC-152a) are derived for the year 2009 by combining long-term observations in Switzerland, Italy, and Ireland with campaign measurements from Hungary. For the first time, halocarbon emissions over Eastern Europe are assessed by top-down methods, and these results are compared to Western European emissions. The employed inversion method builds on least-squares optimization linking atmospheric observations with calculations from the Lagrangian particle dispersion model FLEXPART. The aggregated halocarbon emissions over the study area are estimated at 125 (106–150) Tg of CO2 equiv/y, of which the hydrofluorocarbons (HFCs) make up the most important fraction with 41% (31–52%). We find that chlorofluorocarbon (CFC) emissions from banks are still significant and account for 35% (27–43%) of total halocarbon emissions in Europe. The regional differences in per capita emissions are only small for the HFCs, while emissions of CFCs and hydrochlorofluorocarbons (HCFCs) tend to be higher in Western Europe compared to Eastern Europe. In total, the inferred per capita emissions are similar to estimates for China, but 3.5 (2.3–4.5) times lower than for the United States. Our study demonstrates the large benefits of adding a strategically well placed measurement site to the existing European observation network of halocarbons, as it extends the coverage of the inversion domain toward Eastern Europe and helps to better constrain the emissions over Central Europe.

Chlorofluorocarbon

Halocarbon

Global-warming potential

Atmospheric emissions

10.1021/es202453j

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Citations (68)

Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons

Zenodo (CERN European Organization for Nuclear Research) (2020)

Martin K. Vollmer Jens Mühle Stephan Henne Dickon Young Matthew Rigby

Ozone Depletion

10.5281/zenodo.4266485

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Iron, manganese and copper emitted by cargo and passenger trains in Zürich (Switzerland): Size-segregated mass concentrations in ambient air

Atmospheric Environment (2006)

Nicolas Bukowiecki Robert Gehrig Matthias Hill Peter Lienemann Christoph N. Zwicky

Abrasion (mechanical)

10.1016/j.atmosenv.2006.07.045

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Citations (95)

MetClimVOC - Deliverable D7: Report on the validation of the protocols for the preparation of SI-traceable VOC working standards including comparison with field calibration protocols

Maitane Iturrate‐Garcia Annarita Baldan Stefan Reiman Paul Schlauri Matthias Hill

Deliverable

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First Observations of the Fourth Generation Synthetic Halocarbons HFC-1234yf, HFC-1234ze(E), and HCFC-1233zd(E) in the Atmosphere

Environmental Science & Technology (2015)

Martin K. Vollmer Stefan Reimann Matthias Hill Dominik Brunner

Halogenated alkenes are a class of anthropogenic substances, which replace ozone-depleting substances and long-lived greenhouse gases in the foam-blowing, refrigeration, and solvent sectors. We report the first multiyear atmospheric measurements of the hydrofluorocarbons HFC-1234yf (2,3,3,3-tetrafluoroprop-1-ene, CF3CF═CH2), and HFC-1234ze(E) (E-1,3,3,3-tetrafluoroprop-1-ene trans-CF3CH═CHF), and the hydrochlorofluorocarbon HCFC-1233zd(E) (E-1-chloro-3,3,3-trifluoroprop-1-ene trans-CF3CH═CHCl) from the high altitude observatory at Jungfraujoch and from urban Dubendorf (Switzerland). When observations started in 2011 HFC-1234yf was undetectable at Jungfraujoch (mole fractions <0.003 ppt, parts-per-trillion, 10–12) but since then the percentage of measurements with detectable mole fractions has steadily increased to 4.5% in 2014. By contrast, in 2014 HFC-1234ze(E) was detectable in half of our samples at Jungfraujoch and in all samples at Dubendorf demonstrating the wide use of this compound within the air mass footprints of the stations. Our back trajectory analysis for the Jungfraujoch observations suggests high emission strength of HFC-1234ze(E) in the Belgium/Netherlands region. HCFC-1233zd(E) is present at very low mole fractions (typically <0.03 ppt) at both stations, and features pronounced seasonality and a general absence of pollution events during our 2013–2014 measurements. This is indicative of the presence of significant emissions from source locations outside the footprints of the two stations. Based on a simple one-box model calculation we estimate globally increasing HCFC-1233zd(E) emissions from 0.2 Gg yr–1 in 2013 to 0.5 Gg yr–1 for 2014.

10.1021/es505123x

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Supplementary material to "Atmospheric histories and emissions of chlorofluorocarbons CFC-13(CClF3), CFC-114 (C2Cl2F4), and CFC-115 (C2ClF5)"

Martin K. Vollmer Dickon Young Cathy M. Trudinger Jens Mühle Stephan Henne

Ampere

10.5194/acp-2017-935-supplement

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New halogenated trace gases discovered by non-target screening of the atmosphere at the Jungfraujoch high alpine station (Switzerland)

Myriam Guillevic Martin K. Vollmer Matthias Hill Paul Schlauri Aurore Guillevic

Non-target screening consists in searching for all present substances in a sample, suspected or unknown, with very little prior knowledge about the sample. This approach has been introduced more than a decade ago in the field of water analysis or forensics, but is still very scarce in the field of indoor and atmospheric trace gas measurements, despite the urgent need for a better understanding of the composition of the atmosphere.Recently, we have installed a novel analytical system at the Jungfraujoch high alpine station (3500 m.a.s.l., Switzerland), allowing us to conduct non-target screening of the atmosphere. The system is composed of a preconcentration unit followed by gas chromatography (GC), electron ionisation (EI), and time-of-flight high-resolution mass spectrometry (HRMS). This allows screening the air for all mass fragments from approx. 25 m/z up to 300 m/z, produced by compounds with boiling points from -128 &#176;C (NF3, CF4) to +140 &#176;C (e.g., CHBr3, chlorobenzene, parachlorobenzotrifluoride PCBTF).Here, we present a new and innovative method to detect and identify unknown organic substances in ambient air using GC-EI-HRMS. We developed an algorithm combining the identification of atom assemblage for the detected fragments and the reconstruction of a pseudo-fragmentation tree, linking fragments belonging to the same substance. This supports in particular the identification of substances for which no mass spectrum is registered in databases. Moreover, we developed a quality control strategy to ensure that the compounds have been correctly identified and are separated from potential coelutants.Finally, we present a selection of halogenated compounds newly detected in air, measured for the first time at the Jungfraujoch station.

Chlorobenzene

10.5194/egusphere-egu21-14313

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Citations (1)