Abstract
The vertical distribution of the CH3Cl mixing ratio in the stratosphere has been measured from samples collected during two balloon flights on the 21 October 1982 and 10 September 1983. Measurements were made with two analytical techniques that were also employed for previous analyses of stratospheric samples: gas chromatography (GC) and a gas chromatograph/mass spectrometer (GC/MS) combination. The results from all balloon flights performed to date are combined to derive an average experimental profile of CH3Cl at midlatitudes. The profile shows that the CH3Cl mixing ratio decreases by about one order of magnitude between 20 and 30 km altitude. A comparison of the new observations with model profiles reveals discrepancies in the lower stratosphere that amount to a factor of about 3. Possible causes for these discrepancies are discussed.
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Cronn, D. R., Rasmussen, R. A., Robinson, E., and Harsch, D. E., 1977, Halogenated compound identification and measurements in the tropospere and lower stratosphere, J. Geophys. Res. 82, 5935–5947.
Cronn, D. R. and Robinson, E., 1979, Determination of trace gases in Learjet and U-2 whole air samples collected during the Intertropical Convergence Zone Experiment; 1977 Intertropical Convergence Zone Experiment, NASA Technical Memorandum 78577, National Aeronautics and Space Administration, Moffett Field, Calif. pp. 61–106.
Crutzen, P. J., Heidt, L. E., Krasnec, J. P., Pollock, W. H., and Seiler, W., 1979, Biomass burning as a source of atmospheric gases CO, H2, N2O, NO, CH3Cl, and COS, Nature 282, 253–256.
de More, W. B., Margitan, J. J., Molina, M. J., Watson, R. T., Golden, D. M., Hampson, R. F., Kurylo, M. J., Howard, C. J., and Ravishankara, A. R., 1985, Chemical kinetics and photochemical data for use in stratospheric modelling, Evaluation number 7, JPL Publication 85–37. Jet Propulsion Laboratory, Pasadena, Calif., U.S.A.
Ehhalt, D. H. and Tönnißen, A., 1980, Hydrogen and carbon compounds in the stratosphere, Proceedings of the NATO Advanced Study Institute on Atmospheric Ozone, Report No. FAA-EE-80–20, US DOT, Federal Aviation Administration, Washington, D.C. pp. 129–152.
Ehhalt, D. H., Röth, E. P., and Schmidt, U., 1983, On the temporal variance of stratospheric trace gas concentrations, J. Atmos. Chem. 1, 27–51.
Fabian, P., Borchers, R., Weiler, K. H., Schmidt, U., Volz, A., Ehhalt, D. H., Seiler, W., and Müller, F., 1979, Simultaneously measured vertical profiles of H2, CH4, CO, N2O, CFCl3, and CF2Cl2 in the mid-latitude stratosphere and troposphere. J. Geophys. Res. 84, 3149–3154.
Fabian, P., Borchers, R., Penkett, S. A., and Prosser, N. J. D., 1981a, Halocarbons in the stratosphere, Nature 294, 733–735.
Fabian, P., Borchers, R., Flentje, G., Matthews, W. A., Seiler, W., Giehl, H., Bunse, K., Müller, F., Schmidt, U., Volz, A., Khedim, A., and Johnen, F. J., 1981b, The vertical distribution of stable trace gases at mid-latitudes, J. Geophys. Res. 86, 5179–5184.
Gidel, L. T., Crutzen, P. J., and Fishman, J., 1983, A two-dimensional photochemical model of the atmosphere, 1, chlorocarbon emissions and their effect on stratospheric ozone, J. Geophys. Res. 88, 6622–6640.
Grimsrud, E. P. and Rasmussen, R. A., 1975, Survey and analysis of halocarbons in the atmosphere by gas chromatography/mass spectrometry, Atmos. Environ. 9, 1014–1017.
Knapska, D., Schmidt, U., Jebsen, C., Johnen, F. J., Khedim, A., Kulessa, G., 1985 A laboratory test of cryogenic sampling of longlived trace gases under simulated stratospheric conditions, Proceedings of the Quadrennial Ozone Symposium, Kassandra, Halkidiki, Greece, 3–7 Sept. 1984. D. Reidel, Dordrecht, The Netherlands.
Ko, M. K. W., Sze, N. D., Livshits, M., McElroy, M. B., and Pyle, J. A., 1984, The seasonal and latitudinal behaviour of trace gases and O2 as simulated by a two-dimensional model of the atmosphere, J. Atmos. Sci. 41, 2381–2408.
Lueb, R. A., Ehhalt, D. H. and Heidt, L. E., 1975, Balloon-borne low temperature air sampler, Rev. Sci. Instr. 46, 702–705.
Palmer, T. Y., 1976, Combustion sources of atmospheric chlorine, Nature 263, 44–46.
Penkett, S. A., Brice, K. A., Derwent, R. G., and Eggleton, A. E. J., 1979, Measurement of CFCl3 and CCl4 at Harwell over the period January 1975 to November 1977, Atmos. Environ. 13, 1011–1019.
Penkett, S. A., Derwent, R. G., Fabian, P., Borchers, R., Schmidt, U., 1980, Methyl chlorid in the stratosphere, Nature 283, 58–60.
Rasmussen, R. A., Rasmussen, L. E., Khalil, M. A. K., and Dalluge, R. W., 1980, Concentration distribution of methyl chloride in the atmosphere, J. Geophys. Res. 85, 7350–7356.
Rasmussen, R. A., Khalil, M. A. K., Dalluge, R. W., Penkett, S. A., and Jones, B., 1982, Carbonyl sulfide and carbon disulfide from the eruptions of Mount St Helens, Science 215, 665–667.
Rudolph, J. and Jebsen, C., 1983, The use of photoionisation, flameionization, and electron capture detectors in series for the determination of low molecular weight trace components in the non urban atmosphere, Int. J. Environ. Anal. Chem. 13, 129–139.
Rudolph, J., Ehhalt, D. H., and Khedim, A., 1984, Vertical profiles of acetylene in the troposphere and stratosphere, J. Atmos. Chem. 2, 117–124.
Schmidt, U., Rudolph, J., Johnen, F. J., Ehhalt, D. H., and Volz, A., 1980, The vertical distribution of CH3Cl, CFCl3, CF2Cl2 in the midlatitude stratosphere, Proceedings of the Quadrennial International Ozone Symposium, Vol. II, Boulder, Colorado, 4–9 August 1980, pp. 816–823.
Schmidt, U. Kulessa, G., Khedim, A., Knapska, D., and Rudolph, J., 1983, Sampling of long lived trace gases in the middle and upper stratosphere, Proceedings of the Sixth ESA Symposium on European rocket and balloon programmes, Report ESA SP-183, ESA, Noordwijk, Netherlands, pp. 141–145.
Schmidt, U., Khedim, A., Knapska, D., Kulessa, G., and Johnen, F. J., 1984, Stratospheric trace gas distributions observed in different seasons, Adv. Space Res. 4, pp. 131–134.
Schmidt, U., Kulessa, G., Borchers, R., and Fabian, P., 1985, Intercomparison of balloon borne cryogenic whole air samples during the MAP/Globus 83 campaign, to be submitted.
Singh, H. B., Salas, L. J., Shigeishi, H., and Scribner, E., 1979, Atmospheric halocarbons, hydrocarbons and sulfur hexafluoride: global distributions, sources, and sinks, Science 203, 899–903.
Singh, H. B., Salas, L. J., and Stiles, R. E., 1983, Methyl halides in and over the Eastern Pacific (40°N−32°S), J. Geophys. Res. 88, 3684–3690.
Volz, A., Schmidt, U., Rudolph, J., Ehhalt, D. H., Johnen, F. J., and Khedim, A., 1981, Vertical profiles of trace gases at mid-latitudes, Report Nr. Jül-1742, Kernforschunsanlage Jülich GmbH, Jülich, FRG, 26 pp.
Watson, A. J., Lovelock, J. E., and Stedman, D. H., 1980, The problem of atmospheric methyl chloride, Proceedings of the NATO Advanced Study Institute on Atmospheric Ozone, Report No. FAA-EE-80–20, US DOT, Federal Aviation Administration, Washington, D.C. pp. 365–372.
WMO, 1981, The Stratosphere 1981, Theory and Measurements, World Meteorological Organization, Report No. 11, Geneva, Switzerland.
Wuebbles, D. J., 1983, A theoretical analysis of the past variations in global atmospheric composition and temperature structure, PhD Thesis, University of California, Davis, California, Report No. UCRL-53423, Lawrence Livermore National Laboratory, Livermore, California, U.S.A.
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Schmidt, U., Knapska, D. & Penkett, S.A. A study of the vertical distribution of methyl chloride (CH3Cl) in the midlatitude stratosphere. J Atmos Chem 3, 363–376 (1985). https://doi.org/10.1007/BF00122524
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DOI: https://doi.org/10.1007/BF00122524