Articles | Volume 19, issue 3
https://doi.org/10.5194/acp-19-1703-2019
© Author(s) 2019. 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-19-1703-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
08 Feb 2019
Research article | Highlight paper |
| 08 Feb 2019
| 08 Feb 2019
Evidence for a major missing source in the global chloromethane budget from stable carbon isotopes
Enno Bahlmann
CORRESPONDING AUTHOR
Institute of Geology, University Hamburg, Bundesstrasse 55, 20146 Hamburg, Germany
Leibniz Centre for Tropical Marine Research, Fahrenheitstraße 6, 28359 Bremen, Germany
Frank Keppler
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
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
Markus Greule
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
Heinz Friedrich Schöler
Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld 234–236, 69120 Heidelberg, Germany
Richard Seifert
Institute of Geology, University Hamburg, Bundesstrasse 55, 20146 Hamburg, 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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Cited
16 citations as recorded by crossref.
- Global Methyl Halide Emissions From Rapeseed (Brassica napus) Using Life Cycle Measurements Y. Jiao et al. 10.1029/2020GL089373
- Isotopic Characterization (2H, 13C, 37Cl, 81Br) of Abiotic Degradation of Methyl Bromide and Methyl Chloride in Water and Implications for Future Studies A. Horst et al. 10.1021/acs.est.9b02165
- N2-collisional broadening coefficients of lines in the ν2 band of chloromethane from low to room temperatures S. Leonis & M. Lepère 10.1016/j.jms.2020.111269
- Methanol on the rocks: green rust transformation promotes the oxidation of methane O. Farr et al. 10.1098/rsif.2023.0386
- Effect of immune responses on breath methane dynamics D. Polag & F. Keppler 10.1088/1752-7163/ace9f2
- Triple‐Element Stable Isotope Analysis of Chloromethane Emitted by Royal Fern and Degraded by Club Moss S. Hartmann et al. 10.1029/2022JG007256
- Gold and platinum functionalized arsenene for the detection of CH3Cl and CH3Br: first-principles insights M. Mushtaq et al. 10.1007/s10450-024-00552-w
- Characteristics and Source Apportionment of Halocarbons in Hangzhou, Eastern China X. Li et al. 10.2139/ssrn.4162360
- 13C‐chloromethane incubations provide evidence for novel bacterial chloromethane degraders in a living tree fern E. Kröber et al. 10.1111/1462-2920.15638
- Methyl Chloride and Methyl Bromide Production and Consumption in Coastal Antarctic Tundra Soils Subject to Sea Animal Activities W. Zhang et al. 10.1021/acs.est.0c04257
- Characteristics and source apportionment of some halocarbons in Hangzhou, eastern China during 2021 X. Li et al. 10.1016/j.scitotenv.2022.160894
- Application of copper(II)-based chemicals induces CH3Br and CH3Cl emissions from soil and seawater Y. Jiao et al. 10.1038/s41467-021-27779-3
- Chlorine Isotope Fractionation of the Major Chloromethane Degradation Processes in the Environment F. Keppler et al. 10.1021/acs.est.9b06139
- Global methyl halide emissions from biomass burning during 2003–2021 X. Hu et al. 10.1016/j.ese.2022.100228
- Emission Factors for Crop Residue and Prescribed Fires in the Eastern US During FIREX‐AQ K. Travis et al. 10.1029/2023JD039309
- Completing the Spectral Mosaic of Chloromethane by Adding the CHD2Cl Missing Piece Through the Interplay of Rotational/Vibrational Spectroscopy and Quantum Chemical Calculations M. Melosso et al. 10.3390/molecules30071604
16 citations as recorded by crossref.
- Global Methyl Halide Emissions From Rapeseed (Brassica napus) Using Life Cycle Measurements Y. Jiao et al. 10.1029/2020GL089373
- Isotopic Characterization (2H, 13C, 37Cl, 81Br) of Abiotic Degradation of Methyl Bromide and Methyl Chloride in Water and Implications for Future Studies A. Horst et al. 10.1021/acs.est.9b02165
- N2-collisional broadening coefficients of lines in the ν2 band of chloromethane from low to room temperatures S. Leonis & M. Lepère 10.1016/j.jms.2020.111269
- Methanol on the rocks: green rust transformation promotes the oxidation of methane O. Farr et al. 10.1098/rsif.2023.0386
- Effect of immune responses on breath methane dynamics D. Polag & F. Keppler 10.1088/1752-7163/ace9f2
- Triple‐Element Stable Isotope Analysis of Chloromethane Emitted by Royal Fern and Degraded by Club Moss S. Hartmann et al. 10.1029/2022JG007256
- Gold and platinum functionalized arsenene for the detection of CH3Cl and CH3Br: first-principles insights M. Mushtaq et al. 10.1007/s10450-024-00552-w
- Characteristics and Source Apportionment of Halocarbons in Hangzhou, Eastern China X. Li et al. 10.2139/ssrn.4162360
- 13C‐chloromethane incubations provide evidence for novel bacterial chloromethane degraders in a living tree fern E. Kröber et al. 10.1111/1462-2920.15638
- Methyl Chloride and Methyl Bromide Production and Consumption in Coastal Antarctic Tundra Soils Subject to Sea Animal Activities W. Zhang et al. 10.1021/acs.est.0c04257
- Characteristics and source apportionment of some halocarbons in Hangzhou, eastern China during 2021 X. Li et al. 10.1016/j.scitotenv.2022.160894
- Application of copper(II)-based chemicals induces CH3Br and CH3Cl emissions from soil and seawater Y. Jiao et al. 10.1038/s41467-021-27779-3
- Chlorine Isotope Fractionation of the Major Chloromethane Degradation Processes in the Environment F. Keppler et al. 10.1021/acs.est.9b06139
- Global methyl halide emissions from biomass burning during 2003–2021 X. Hu et al. 10.1016/j.ese.2022.100228
- Emission Factors for Crop Residue and Prescribed Fires in the Eastern US During FIREX‐AQ K. Travis et al. 10.1029/2023JD039309
- Completing the Spectral Mosaic of Chloromethane by Adding the CHD2Cl Missing Piece Through the Interplay of Rotational/Vibrational Spectroscopy and Quantum Chemical Calculations M. Melosso et al. 10.3390/molecules30071604
Latest update: 24 May 2025
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.
Chloromethane is the most important natural carrier of chlorine to the stratosphere. From a...
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