Articles | Volume 18, issue 9
https://doi.org/10.5194/acp-18-6625-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-18-6625-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Mass spectrometric measurement of hydrogen isotope fractionation for the reactions of chloromethane with OH and Cl
Frank Keppler
CORRESPONDING AUTHOR
Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld
234–236, 69120 Heidelberg, Germany
Heidelberg Center for the Environment (HCE), Heidelberg University,
69120 Heidelberg, Germany
Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz,
Germany
Enno Bahlmann
Leibniz Centre for Tropical Marine Research, Fahrenheitstraße 6,
28359 Bremen, Germany
Institute of Geology, University Hamburg, Bundesstraße 55, 20146
Hamburg, Germany
Markus Greule
Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld
234–236, 69120 Heidelberg, Germany
Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz,
Germany
Heinz Friedrich Schöler
Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld
234–236, 69120 Heidelberg, Germany
Julian Wittmer
Atmospheric Chemistry Research Unit, BayCEER, University of Bayreuth, Dr
Hans-Frisch Strasse 1–3, 95448 Bayreuth, Germany
Agilent Technologies Sales & Services GmbH & Co. KG,
Hewlett-Packard-Str. 8, 76337 Waldbronn, Germany
Cornelius Zetzsch
Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz,
Germany
Atmospheric Chemistry Research Unit, BayCEER, University of Bayreuth, Dr
Hans-Frisch Strasse 1–3, 95448 Bayreuth, Germany
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Anna Wieland, Markus Greule, Philipp Roemer, Jan Esper, and Frank Keppler
Clim. Past, 18, 1849–1866, https://doi.org/10.5194/cp-18-1849-2022, https://doi.org/10.5194/cp-18-1849-2022, 2022
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We examined annually resolved stable carbon and hydrogen isotope ratios of wood lignin methoxy groups of beech trees growing in temperate, low elevation environments. Here, carbon isotope ratios reveal highest correlations with regional summer temperatures while hydrogen isotope ratios correlate more strongly with large-scale temperature changes. By combining the dual isotope ratios of wood lignin methoxy groups, a proxy for regional- to subcontinental-scale temperature patterns can be applied.
Moritz Schroll, Frank Keppler, Markus Greule, Christian Eckhardt, Holger Zorn, and Katharina Lenhart
Biogeosciences, 17, 3891–3901, https://doi.org/10.5194/bg-17-3891-2020, https://doi.org/10.5194/bg-17-3891-2020, 2020
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Fungi have recently been identified to produce the greenhouse gas methane. Here, we investigated the stable carbon isotope values of methane produced by saprotrophic fungi. Our results show that stable isotope values of methane from fungi are dependent on the fungal species and the metabolized substrate. They cover a broad range and overlap with stable carbon isotope values of methane reported for methanogenic archaea, the thermogenic degradation of organic matter, and other eukaryotes.
Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Anna Wieland, Katharina Lenhart, and Frank Keppler
Biogeosciences, 16, 4129–4144, https://doi.org/10.5194/bg-16-4129-2019, https://doi.org/10.5194/bg-16-4129-2019, 2019
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Marine algae might contribute to the observed methane oversaturation in oxic waters, but so far direct evidence for methane production by marine algae is limited. We investigated three widespread haptophytes for methane formation. Our results provide unambiguous evidence that all investigated marine algae produce methane per se and at substantial rates. We conclude that each of the three algae studied here could substantially account for the methane production observed in field studies.
Simon Michael Ritter, Margot Isenbeck-Schröter, Christian Scholz, Frank Keppler, Johannes Gescher, Lukas Klose, Nils Schorndorf, Jerónimo Avilés Olguín, Arturo González-González, and Wolfgang Stinnesbeck
Biogeosciences, 16, 2285–2305, https://doi.org/10.5194/bg-16-2285-2019, https://doi.org/10.5194/bg-16-2285-2019, 2019
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Unique and spectacular under water speleothems termed as Hells Bells were recently reported from sinkholes (cenotes) of the Yucatán Peninsula, Mexico. However, the mystery of their formation remained unresolved. Here, we present detailed geochemical analyses and delineate that the growth of Hells Bells results from a combination of biogeochemical processes and variable hydraulic conditions within the cenote.
Enno Bahlmann, Frank Keppler, Julian Wittmer, Markus Greule, Heinz Friedrich Schöler, Richard Seifert, and Cornelius Zetzsch
Atmos. Chem. Phys., 19, 1703–1719, https://doi.org/10.5194/acp-19-1703-2019, https://doi.org/10.5194/acp-19-1703-2019, 2019
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Chloromethane is the most important natural carrier of chlorine to the stratosphere. From a newly determined carbon isotope effect of −11.2 ‰ for the tropospheric loss of CH3Cl we derive a tropical rainforest CH3Cl source of 670 ± 200 Gg a−1, 60 % smaller than previous estimates. A revision of previous bottom-up estimates using above-ground biomass instead of rainforest area strongly supports this lower estimate. Our results suggest a large unknown tropical value of 1530 ± 200 Gg a−1.
Tobias Anhäuser, Birgit Sehls, Werner Thomas, Claudia Hartl, Markus Greule, Denis Scholz, Jan Esper, and Frank Keppler
Clim. Past Discuss., https://doi.org/10.5194/cp-2019-8, https://doi.org/10.5194/cp-2019-8, 2019
Revised manuscript not accepted
Katharina Lenhart, Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Michael Bunge, Sylvia Schnell, and Frank Keppler
Biogeosciences, 13, 3163–3174, https://doi.org/10.5194/bg-13-3163-2016, https://doi.org/10.5194/bg-13-3163-2016, 2016
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In this study we investigated marine algae as a source of CH4 in oxic surface waters of oceans. Algae-derived CH4 may explain the CH4 oversaturating state within the surface mixed layer, sometimes also termed the "oceanic methane paradox".
This finding of an overlooked source of CH4 in marine environments will be of considerable importance to scientists in many disciplines because algae play a crucial role in organic matter cycling in marine and freshwater ecosystems.
K. Lenhart, F. Althoff, M. Greule, and F. Keppler
Biogeosciences, 12, 1907–1914, https://doi.org/10.5194/bg-12-1907-2015, https://doi.org/10.5194/bg-12-1907-2015, 2015
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Plants are known as a source of methane (CH4), but the biochemical mechanisms involved in CH4 formation are still unknown. Employing 13C-labelled methionine clearly identified the sulfur-bound methyl group of methionine as a carbon precursor of CH4 released from lavender plants. When relating CH4 emission rates to dark respiration of intact plants, we found a molar CH4:CO2 emission ratio of 2.0 ±1.1 (pmol:µmol). After physical stress CH4 release rates greatly increased.
A. Jugold, F. Althoff, M. Hurkuck, M. Greule, K. Lenhart, J. Lelieveld, and F. Keppler
Biogeosciences, 9, 5291–5301, https://doi.org/10.5194/bg-9-5291-2012, https://doi.org/10.5194/bg-9-5291-2012, 2012
Anna Wieland, Markus Greule, Philipp Roemer, Jan Esper, and Frank Keppler
Clim. Past, 18, 1849–1866, https://doi.org/10.5194/cp-18-1849-2022, https://doi.org/10.5194/cp-18-1849-2022, 2022
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We examined annually resolved stable carbon and hydrogen isotope ratios of wood lignin methoxy groups of beech trees growing in temperate, low elevation environments. Here, carbon isotope ratios reveal highest correlations with regional summer temperatures while hydrogen isotope ratios correlate more strongly with large-scale temperature changes. By combining the dual isotope ratios of wood lignin methoxy groups, a proxy for regional- to subcontinental-scale temperature patterns can be applied.
Moritz Schroll, Frank Keppler, Markus Greule, Christian Eckhardt, Holger Zorn, and Katharina Lenhart
Biogeosciences, 17, 3891–3901, https://doi.org/10.5194/bg-17-3891-2020, https://doi.org/10.5194/bg-17-3891-2020, 2020
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Fungi have recently been identified to produce the greenhouse gas methane. Here, we investigated the stable carbon isotope values of methane produced by saprotrophic fungi. Our results show that stable isotope values of methane from fungi are dependent on the fungal species and the metabolized substrate. They cover a broad range and overlap with stable carbon isotope values of methane reported for methanogenic archaea, the thermogenic degradation of organic matter, and other eukaryotes.
Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Anna Wieland, Katharina Lenhart, and Frank Keppler
Biogeosciences, 16, 4129–4144, https://doi.org/10.5194/bg-16-4129-2019, https://doi.org/10.5194/bg-16-4129-2019, 2019
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Marine algae might contribute to the observed methane oversaturation in oxic waters, but so far direct evidence for methane production by marine algae is limited. We investigated three widespread haptophytes for methane formation. Our results provide unambiguous evidence that all investigated marine algae produce methane per se and at substantial rates. We conclude that each of the three algae studied here could substantially account for the methane production observed in field studies.
Simon Michael Ritter, Margot Isenbeck-Schröter, Christian Scholz, Frank Keppler, Johannes Gescher, Lukas Klose, Nils Schorndorf, Jerónimo Avilés Olguín, Arturo González-González, and Wolfgang Stinnesbeck
Biogeosciences, 16, 2285–2305, https://doi.org/10.5194/bg-16-2285-2019, https://doi.org/10.5194/bg-16-2285-2019, 2019
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Unique and spectacular under water speleothems termed as Hells Bells were recently reported from sinkholes (cenotes) of the Yucatán Peninsula, Mexico. However, the mystery of their formation remained unresolved. Here, we present detailed geochemical analyses and delineate that the growth of Hells Bells results from a combination of biogeochemical processes and variable hydraulic conditions within the cenote.
Kazuki Kamezaki, Shohei Hattori, Enno Bahlmann, and Naohiro Yoshida
Atmos. Meas. Tech., 12, 1141–1154, https://doi.org/10.5194/amt-12-1141-2019, https://doi.org/10.5194/amt-12-1141-2019, 2019
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Knowledge related to sulfur isotopic composition of carbonyl sulfide (OCS or COS), the most abundant atmospheric sulfur species, remains scarce. We present a new sampling system for collecting approx. 10 nmol of OCS from ambient air coupled with a purification system. The system presented herein is useful for application of sulfur isotopic compositions for investigation of OCS sources and sinks in the troposphere to elucidate its cycle and its contribution to background stratospheric sulfate.
Enno Bahlmann, Frank Keppler, Julian Wittmer, Markus Greule, Heinz Friedrich Schöler, Richard Seifert, and Cornelius Zetzsch
Atmos. Chem. Phys., 19, 1703–1719, https://doi.org/10.5194/acp-19-1703-2019, https://doi.org/10.5194/acp-19-1703-2019, 2019
Short summary
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Chloromethane is the most important natural carrier of chlorine to the stratosphere. From a newly determined carbon isotope effect of −11.2 ‰ for the tropospheric loss of CH3Cl we derive a tropical rainforest CH3Cl source of 670 ± 200 Gg a−1, 60 % smaller than previous estimates. A revision of previous bottom-up estimates using above-ground biomass instead of rainforest area strongly supports this lower estimate. Our results suggest a large unknown tropical value of 1530 ± 200 Gg a−1.
Tobias Anhäuser, Birgit Sehls, Werner Thomas, Claudia Hartl, Markus Greule, Denis Scholz, Jan Esper, and Frank Keppler
Clim. Past Discuss., https://doi.org/10.5194/cp-2019-8, https://doi.org/10.5194/cp-2019-8, 2019
Revised manuscript not accepted
Katharina Lenhart, Thomas Klintzsch, Gerald Langer, Gernot Nehrke, Michael Bunge, Sylvia Schnell, and Frank Keppler
Biogeosciences, 13, 3163–3174, https://doi.org/10.5194/bg-13-3163-2016, https://doi.org/10.5194/bg-13-3163-2016, 2016
Short summary
Short summary
In this study we investigated marine algae as a source of CH4 in oxic surface waters of oceans. Algae-derived CH4 may explain the CH4 oversaturating state within the surface mixed layer, sometimes also termed the "oceanic methane paradox".
This finding of an overlooked source of CH4 in marine environments will be of considerable importance to scientists in many disciplines because algae play a crucial role in organic matter cycling in marine and freshwater ecosystems.
K. Lenhart, F. Althoff, M. Greule, and F. Keppler
Biogeosciences, 12, 1907–1914, https://doi.org/10.5194/bg-12-1907-2015, https://doi.org/10.5194/bg-12-1907-2015, 2015
Short summary
Short summary
Plants are known as a source of methane (CH4), but the biochemical mechanisms involved in CH4 formation are still unknown. Employing 13C-labelled methionine clearly identified the sulfur-bound methyl group of methionine as a carbon precursor of CH4 released from lavender plants. When relating CH4 emission rates to dark respiration of intact plants, we found a molar CH4:CO2 emission ratio of 2.0 ±1.1 (pmol:µmol). After physical stress CH4 release rates greatly increased.
T. Krause, C. Tubbesing, K. Benzing, and H. F. Schöler
Biogeosciences, 11, 2871–2882, https://doi.org/10.5194/bg-11-2871-2014, https://doi.org/10.5194/bg-11-2871-2014, 2014
S. Bleicher, J. C. Buxmann, R. Sander, T. P. Riedel, J. A. Thornton, U. Platt, and C. Zetzsch
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acpd-14-10135-2014, https://doi.org/10.5194/acpd-14-10135-2014, 2014
Revised manuscript has not been submitted
D. J. Hoch, J. Buxmann, H. Sihler, D. Pöhler, C. Zetzsch, and U. Platt
Atmos. Meas. Tech., 7, 199–214, https://doi.org/10.5194/amt-7-199-2014, https://doi.org/10.5194/amt-7-199-2014, 2014
A. Jugold, F. Althoff, M. Hurkuck, M. Greule, K. Lenhart, J. Lelieveld, and F. Keppler
Biogeosciences, 9, 5291–5301, https://doi.org/10.5194/bg-9-5291-2012, https://doi.org/10.5194/bg-9-5291-2012, 2012
Related subject area
Subject: Isotopes | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core
Quantifying the nitrogen isotope effects during photochemical equilibrium between NO and NO2: implications for δ15N in tropospheric reactive nitrogen
Temporal variation in 129I and 127I in aerosols from Xi'an, China: influence of East Asian monsoon and heavy haze events
High time-resolved measurement of stable carbon isotope composition in water-soluble organic aerosols: method optimization and a case study during winter haze in eastern China
Dependence between the photochemical age of light aromatic hydrocarbons and the carbon isotope ratios of atmospheric nitrophenols
Evidence for a major missing source in the global chloromethane budget from stable carbon isotopes
Atmospheric Δ17O(NO3−) reveals nocturnal chemistry dominates nitrate production in Beijing haze
Stable carbon isotope ratios of ambient aromatic volatile organic compounds
Kinetic isotope effects of 12CH3D + OH and 13CH3D + OH from 278 to 313 K
Investigation of post-depositional processing of nitrate in East Antarctic snow: isotopic constraints on photolytic loss, re-oxidation, and source inputs
Chlorine isotope composition in chlorofluorocarbons CFC-11, CFC-12 and CFC-113 in firn, stratospheric and tropospheric air
NOx cycle and the tropospheric ozone isotope anomaly: an experimental investigation
Fractionation of sulfur isotopes during heterogeneous oxidation of SO2 on sea salt aerosol: a new tool to investigate non-sea salt sulfate production in the marine boundary layer
Sulfur isotope fractionation during oxidation of sulfur dioxide: gas-phase oxidation by OH radicals and aqueous oxidation by H2O2, O3 and iron catalysis
Molecular hydrogen (H2) emissions and their isotopic signatures (H/D) from a motor vehicle: implications on atmospheric H2
Isotope effect in the formation of H2 from H2CO studied at the atmospheric simulation chamber SAPHIR
Pressure dependence of the deuterium isotope effect in the photolysis of formaldehyde by ultraviolet light
Yanzhi Cao, Zhuang Jiang, Becky Alexander, Jihong Cole-Dai, Joel Savarino, Joseph Erbland, and Lei Geng
Atmos. Chem. Phys., 22, 13407–13422, https://doi.org/10.5194/acp-22-13407-2022, https://doi.org/10.5194/acp-22-13407-2022, 2022
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We investigate the potential of ice-core preserved nitrate isotopes as proxies of stratospheric ozone variability by measuring nitrate isotopes in a shallow ice core from the South Pole. The large variability in the snow accumulation rate and its slight increase after the 1970s masked any signals caused by the ozone hole. Moreover, the nitrate oxygen isotope decrease may reflect changes in the atmospheric oxidation environment in the Southern Ocean.
Jianghanyang Li, Xuan Zhang, John Orlando, Geoffrey Tyndall, and Greg Michalski
Atmos. Chem. Phys., 20, 9805–9819, https://doi.org/10.5194/acp-20-9805-2020, https://doi.org/10.5194/acp-20-9805-2020, 2020
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Nitrogen isotopic compositions of atmospheric reactive nitrogen are widely used to infer their sources. However, the reactions between NO and NO2 strongly impact their isotopes, which was not well understood. We conducted a series of experiments in an atmospheric simulation chamber to determine the isotopic effects of (1) direct isotopic exchange between NO and NO2 and (2) the isotopic fractionations during NOx photochemistry, then developed an equation to quantify the overall isotopic effect.
Luyuan Zhang, Xiaolin Hou, Sheng Xu, Tian Feng, Peng Cheng, Yunchong Fu, and Ning Chen
Atmos. Chem. Phys., 20, 2623–2635, https://doi.org/10.5194/acp-20-2623-2020, https://doi.org/10.5194/acp-20-2623-2020, 2020
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To trace the long-range transport of air pollutants and understand the atmospheric effect of iodine, the daily-resolution temporal variations of 129I and 127I in aerosols from a monsoonal city indicate the East Asian monsoon and fossil fuel combustion plays crucial roles on transport of 129I from Europe to East Asia and on elevated 127I concentrations. Through linking iodine isotopes with five major air pollutants, this study proposes the possible role of iodine in urban air pollution.
Wenqi Zhang, Yan-Lin Zhang, Fang Cao, Yankun Xiang, Yuanyuan Zhang, Mengying Bao, Xiaoyan Liu, and Yu-Chi Lin
Atmos. Chem. Phys., 19, 11071–11087, https://doi.org/10.5194/acp-19-11071-2019, https://doi.org/10.5194/acp-19-11071-2019, 2019
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A novel method to determine the concentration and the isotopes of WSOC in aerosols is established and applied in the analysis of a severe haze in eastern China. The results show that the studied site is affected by the photochemical aging, biomass burning and dust aerosols in different episodes during the sampling period. The analysis of WSOC and its isotopes offers a great potential to better understand the source emission, the atmospheric aging and the secondary production of WSOC.
Marina Saccon, Anna Kornilova, Lin Huang, and Jochen Rudolph
Atmos. Chem. Phys., 19, 5495–5509, https://doi.org/10.5194/acp-19-5495-2019, https://doi.org/10.5194/acp-19-5495-2019, 2019
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As compound are emitted into the atmosphere, they can undergo chemical reactions to produce secondary products. This paper investigates the relations of compounds' unique chemical characteristics to the processes that formed them from emissions in the atmosphere. A model is applied to help with this investigation. The complexity of the atmosphere, including mixing of air masses and variability in precursor reactivity, is taken into consideration, and results are presented.
Enno Bahlmann, Frank Keppler, Julian Wittmer, Markus Greule, Heinz Friedrich Schöler, Richard Seifert, and Cornelius Zetzsch
Atmos. Chem. Phys., 19, 1703–1719, https://doi.org/10.5194/acp-19-1703-2019, https://doi.org/10.5194/acp-19-1703-2019, 2019
Short summary
Short summary
Chloromethane is the most important natural carrier of chlorine to the stratosphere. From a newly determined carbon isotope effect of −11.2 ‰ for the tropospheric loss of CH3Cl we derive a tropical rainforest CH3Cl source of 670 ± 200 Gg a−1, 60 % smaller than previous estimates. A revision of previous bottom-up estimates using above-ground biomass instead of rainforest area strongly supports this lower estimate. Our results suggest a large unknown tropical value of 1530 ± 200 Gg a−1.
Pengzhen He, Zhouqing Xie, Xiyuan Chi, Xiawei Yu, Shidong Fan, Hui Kang, Cheng Liu, and Haicong Zhan
Atmos. Chem. Phys., 18, 14465–14476, https://doi.org/10.5194/acp-18-14465-2018, https://doi.org/10.5194/acp-18-14465-2018, 2018
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We present the first observations of the oxygen-17 excess of atmospheric nitrate (Δ17O(NO−3)) collected in Beijing haze to reveal the relative importance of different nitrate formation pathways. We found that nocturnal pathways (N2O5 + H2O/Cl– and NO3 + HC) dominated nitrate production during polluted days (PM2.5 ≥ 75 μg m–3), with a mean possible fraction of 56–97 %.
Anna Kornilova, Lin Huang, Marina Saccon, and Jochen Rudolph
Atmos. Chem. Phys., 16, 11755–11772, https://doi.org/10.5194/acp-16-11755-2016, https://doi.org/10.5194/acp-16-11755-2016, 2016
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The photochemical oxidation of organic compounds in the atmosphere results in the formation of important secondary pollutants such as ozone and fine particles. The extent of oxidation the organic compounds have been subjected too since there emissions is essential is key for understanding the formation of secondary pollutants. This paper demonstrates that measurements of the carbon isotope ratios allow determining the extent of photochemical processing for individual compounds.
L. M. T. Joelsson, J. A. Schmidt, E. J. K. Nilsson, T. Blunier, D. W. T. Griffith, S. Ono, and M. S. Johnson
Atmos. Chem. Phys., 16, 4439–4449, https://doi.org/10.5194/acp-16-4439-2016, https://doi.org/10.5194/acp-16-4439-2016, 2016
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We present experimental kinetic isotope effects (KIE) for the OH oxidation of CH3D and 13CH3D and their temperature dependence. Our determination of the 13CH3D + OH KIE is novel and we find no "clumped" isotope effect within the experimental uncertainty.
G. Shi, A. M. Buffen, M. G. Hastings, C. Li, H. Ma, Y. Li, B. Sun, C. An, and S. Jiang
Atmos. Chem. Phys., 15, 9435–9453, https://doi.org/10.5194/acp-15-9435-2015, https://doi.org/10.5194/acp-15-9435-2015, 2015
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We evaluate isotopic composition of NO3- in different environments across East Antarctica. At high snow accumulation sites, isotopic ratios are suggestive of preservation of NO3- deposition. At low accumulation sites, isotopes are sensitive to both the loss of NO3- due to photolysis and secondary formation of NO3- within the snow. The imprint of post-depositional alteration is not uniform with depth, making it difficult to predict the isotopic composition at depth from near-surface data alone.
S. J. Allin, J. C. Laube, E. Witrant, J. Kaiser, E. McKenna, P. Dennis, R. Mulvaney, E. Capron, P. Martinerie, T. Röckmann, T. Blunier, J. Schwander, P. J. Fraser, R. L. Langenfelds, and W. T. Sturges
Atmos. Chem. Phys., 15, 6867–6877, https://doi.org/10.5194/acp-15-6867-2015, https://doi.org/10.5194/acp-15-6867-2015, 2015
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Stratospheric ozone protects life on Earth from harmful UV-B radiation. Chlorofluorocarbons (CFCs) are man-made compounds which act to destroy this barrier.
This paper presents (1) the first measurements of the stratospheric δ(37Cl) of CFCs -11 and -113; (2) the first quantification of long-term trends in the tropospheric δ(37Cl) of CFCs -11, -12 and -113.
This study provides a better understanding of source and sink processes associated with these destructive compounds.
G. Michalski, S. K. Bhattacharya, and G. Girsch
Atmos. Chem. Phys., 14, 4935–4953, https://doi.org/10.5194/acp-14-4935-2014, https://doi.org/10.5194/acp-14-4935-2014, 2014
E. Harris, B. Sinha, P. Hoppe, S. Foley, and S. Borrmann
Atmos. Chem. Phys., 12, 4619–4631, https://doi.org/10.5194/acp-12-4619-2012, https://doi.org/10.5194/acp-12-4619-2012, 2012
E. Harris, B. Sinha, P. Hoppe, J. N. Crowley, S. Ono, and S. Foley
Atmos. Chem. Phys., 12, 407–423, https://doi.org/10.5194/acp-12-407-2012, https://doi.org/10.5194/acp-12-407-2012, 2012
M. K. Vollmer, S. Walter, S. W. Bond, P. Soltic, and T. Röckmann
Atmos. Chem. Phys., 10, 5707–5718, https://doi.org/10.5194/acp-10-5707-2010, https://doi.org/10.5194/acp-10-5707-2010, 2010
T. Röckmann, S. Walter, B. Bohn, R. Wegener, H. Spahn, T. Brauers, R. Tillmann, E. Schlosser, R. Koppmann, and F. Rohrer
Atmos. Chem. Phys., 10, 5343–5357, https://doi.org/10.5194/acp-10-5343-2010, https://doi.org/10.5194/acp-10-5343-2010, 2010
E. J. K. Nilsson, V. F. Andersen, H. Skov, and M. S. Johnson
Atmos. Chem. Phys., 10, 3455–3462, https://doi.org/10.5194/acp-10-3455-2010, https://doi.org/10.5194/acp-10-3455-2010, 2010
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Short summary
Chloromethane is involved in stratospheric ozone depletion, but detailed knowledge of its global budget is missing. In this study stable hydrogen isotope analyses were performed to investigate the dominant loss process for atmospheric chloromethane with photochemically produced hydroxyl radicals. The findings might have significant implications for the use of stable isotope signatures in elucidation of global chloromethane cycling.
Chloromethane is involved in stratospheric ozone depletion, but detailed knowledge of its global...
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