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A review of four decades of atmospheric trace gas measurements at Cape Point, South Africa

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References

  • Abiodun, B.J., Ojumu, A.M., Jenner, S. & Ojumu, T.V. 2013. The transport of atmospheric NOx and HNO3 over Cape Town. Atmospheric Chemistry and Physics 14(2): 559–575. doi: 10.5194/acp-14-559-2014
  • Ayers, G.P., Granek, H. & Boers, R. 1997. Ozone in the marine boundary layer at Cape Grim: Model simulation. Journal of Atmospheric Chemistry 27(2): 179–195. doi: 10.1023/A:1005828930552
  • Barnola, J.M., Raynaud, D., Lorius, C. & Barkov, N.I. 1987. Historical carbon dioxide record from the Vostok ice core. Nature 329: 408–414. doi: 10.1038/329408a0
  • Battle, M., Bender, M.L., Tans, P.P., White, J.W.C., Ellis, J.T., Conway, T. & Francey, R.J. 2000. Global carbon sinks and their variability inferred from atmospheric O2 and 13C. Science 287: 2467–2470. doi: 10.1126/science.287.5462.2467
  • Battle, M., Fletcher, S.M., Bender, M.L., Keeling, R.F., Manning, A.C., Gruber, N., Tans, P.P., Hendricks, M.B., Ho, D.T., Simonds, C., Mika, R. & Paplawsky, B. 2006. Atmospheric potential oxygen: New observations and their implications for some atmospheric and oceanic models. Global Biogeochemical Cycles 20(1): 1–15. doi: 10.1029/2005GB002534
  • Bergamaschi, P., Houweling, S., Segers, A., Krol, M., Frankenberg, C., Scheepmaker, R.A., Dlugokencky, E.J., Wofsy, S.C., Kort, E.A., Sweeney, C., Schuck, T., Brenninkmeijer, C., Chen, H., Beck, V. & Gerbig, C. 2013. Atmospheric CH4 in the first decade of the 21st century: Inverse modeling analysis using SCIAMACHY satellite retrievals and NOAA surface measurements. Journal of Geophysical Research Atmospheres 118(13): 7350–7369. doi: 10.1002/jgrd.50480
  • Blake, D.R. & Rowland, F.S. 1988. Continuing worldwide increase in tropospheric methane, 1978 to 1987. American Association for the Advancement of Science 239(4844): 1129–1131. doi: 10.1126/science.239.4844.1129
  • Bousquet, P., Ciais, P., Miller, J.B., Dlugokencky, E.J., Hauglustaine, D.A., Prigent, C., van der Werf, G.R., Peylin, P., Brunke, E.G., Carouge, C., Langenfelds, R.L., Lathière, J., Papa, F., Ramonet, M., Schmidt, M., Steele, L.P., Tyler, S.C., Whibousquet, P., Ringeval, B., Pison, I., Dlugokencky, E.J., Brunke, E.G., Carouge, C., Chevallier, F., Fortems-Cheiney, A., Frankenberg, C., Hauglustaine, D.A., Krummel, P.B., Langenfelds, R.L., Ramonet, M., Schmidt, M., Steele, L.P., Szopa, S., Yver, C., Viovy, N. & Ciais, P. 2011. Source attribution of the changes in atmospheric methane for 2006–2008. Atmospheric Chemistry and Physics 11(8): 3689–3700. doi: 10.5194/acp-11-3689-2011
  • Bremaud, P.J. & Taupin, F. 1998. Ozone nighttime recovery in the marine boundary layer : diurnal cycle at Reunion Island Then we assume an entrainment velocity equal the night to closely match. J. Geophys. Res. 103, 3463–3473. doi: 10.1029/97JD01972
  • Broucek, J. 2014. Production of methane emissions from ruminant husbandry: a review. Journal of Environmental Protection 5(5): 1482–1493. doi: 10.4236/jep.2014.515141
  • Brunke, E.G. & Halliday, E.C. 1983. Halocarbon measurements in the southern hemisphere since 1977. Atmospheric Environment 17(4): 823–826. doi: 10.1016/0004-6981(83)90433-X
  • Brunke, E.G. & Scheel, H.E. 1998. Surface ozone measurements at Cape Point (34° S, 18° E). In Atmospheric Ozone, Proceedings of the XVIII Quadrennial Ozone Symposium. L’Aquila, Italy.
  • Brunke, E.G. & Scheel, H.E. 2002. Characterisation of the Origin of Air Masses reaching Cape Point (34°S, 18°E). Final Report (Project Code: 39.2.F7A.1A). Forschungs-zentrum Jülich, Germany and National Research Foundation, Pretoria. pp. 39.
  • Brunke, E.G., Scheel, H.E. & Seiler, W. 1990. Trends of tropospheric CO, N2O and CH4 as observed at cape point, South Africa. Atmospheric Environment Part A, General Topics 24(3): 585–595. doi: 10.1016/0960-1686(90)90013-D
  • Brunke, E.G., Labuschagne, C. & Scheel, H.E. 2001. Trace gas variations at Cape Point, South Africa, during May 1997 following a regional biomass burning episode. Atmospheric Environment 35(4): 777–786. doi: 10.1016/S1352-2310(00)00260-0
  • Brunke, E.G., Labuschagne, C., Parker, B., Scheel, H.E. & Whittlestone, S. 2004. Baseline air mass selection at Cape Point, South Africa: Application of 222Rn and other filter criteria to CO2. Atmospheric Environment 38(33): 5693–5702. doi: 10.1016/j.atmosenv.2004.04.024
  • Brunke, E.G., Labuschagne, C., Parker, B. & Scheel, H-E. 2009. Recent results from measurements of CO2, CH4, CO and N2O at the GAW station Cape Point. 15th WMO/IAEA Meeting of Experts on Carbon Dioxide, other Greenhouse Gases and Tracer Measurement Techniques, Jena, Germany.
  • Brunke, E.G., Walters, C., Mkololo, T., Martin, L., Labuschagne, C., Silwana, B., Slemr, F., Weigelt, A., Ebinghaus, R. & Somerset, V. 2016. Mercury in the atmosphere and in rainwater at Cape Point, South Africa. Atmospheric Environment 125: 24–32. doi: 10.1016/j.atmosenv.2015.10.059
  • Brunke, E.G, Labuschagne, C., Mkololo, T. & Scheel, H E. 2011a. Analysis of ozone trends at the Cape Point GAW station. In Schultz, M.G. & Thouret, V. (Eds), Second Tropospheric Ozone Workshop, Tropospheric Ozone Changes: Observations, state of understanding, and model performances. WMO/GAW Report No. 199. pp. 72–75.
  • Brunke, E.G., Labuschagne, C., Parker, B. & Scheel, H.E. 2011b. Recent results from measurements of CO2, CH4, CO and N2O at the GAW station Cape Point. In Brand, W.A. (Ed.), 15th WMO/IAEA Meeting of Experts on Carbon Dioxide, other Greenhouse Gases and Tracers Measurement Techniques. WMO GAW Report No. 194, pp. 37–40.
  • Butterworth, B.J. & Miller, S.D. 2016. Air-sea exchange of carbon dioxide in the Southern Ocean and Antarctic marginal ice zone. Geophysical Research Letters 43(13): 7223–7230. doi: 10.1002/2016GL069581
  • Caldeira, K. & Duffy, P.B. 2000. The role of the Southern Ocean in uptake and storage of anthropogenic carbon dioxide. Science 287(5453): 620–622. doi: 10.1126/science.287.5453.620
  • Campbell, J.E., Berry, J.A., Seibt, U., Smith, S.J., Montzka, S.A., Launois, T., Belviso, S., Bopp, L. & Laine, M. 2017. Large historical growth in global terrestrial gross primary production. Nature 544(7648): 84–87. doi: 10.1038/nature22030
  • Chameides, W. & Walker, J.C.C.G. 1973. A photochemical theory of tropospheric ozone. Journal of Geophysical Research 78(36): 8751–8760. doi: 10.1029/JC078i036p08751
  • Chameides, W.L. & Walker, J.C.G. 1976. A time-dependent photochemical model for ozone near the ground. Journal of Geophysical Research 81(3): 413–420. doi: 10.1029/JC081i003p00413
  • Cicerone, R.J. 1988. How has the atmospheric concentration of CO changed? In Rowland, F.S. & Isaksen, I.S.A. (Eds), The Changing Atmosphere, Wiley, New York, pp. 44–61.
  • Clark, A.G. & Tomlin, A.S. 1999. The atmosphere. In: Harrison, R.M. (Ed.), Understanding Our Environment An Introduction to Environmental Chemistry and Pollution. Cambridge, UK: Royal Society of Chemistry, pp. 9–69.
  • Crutzen, P.J. 1974. Photochemical reactions initiated by and influencing ozone in unpolluted tropospheric air. Tellus A XXVI 1971(1/2): 47–57.
  • Crutzen, P.J. 1976. The possible importance of COS for the sulphate layer of the stratosphere. Geophysical Research Letters 3(2): 73–76. doi: 10.1029/GL003i002p00073
  • Crutzen, P.J. 1995. On the role of CH4 in atmospheric chemistry: sources, sinks and possible reductions in anthropogenic sources. Ambio 24(1): 52–55.
  • Crutzen, P.J., Mosier, A., Smith, K.A. & Winiwarter, W. 2008. N2O release from agro-biofuel production negates global warming reduction by replacing fossil fuels. Atmospheric Chemistry and Physics Discussions 7, 11191–11205. https://doi.org/10.5194/acpd-7-11191-2007
  • Daniel, J.S., Solomon, S. & Albritton, D.L. 1995. On the evaluation of halocarbon radiative forcing and global warming potentials. Journal of Geophysical Research 100(D1): 1271–1285. doi: 10.1029/94JD02516
  • Danielsen, E.F. & Mohnen, V.A. 1977. Project dustorm report: ozone transport, in situ measurements, and meteorological analyses of tropopause folding. Journal of Geophysical Research 82(37): 5867–5877. doi: 10.1029/JC082i037p05867
  • Davidson, E.A. 2009. The contribution of manure and fertilizer nitrogen to atmospheric nitrous oxide since 1860. Nature Geoscience 2(9): 659–662. doi: 10.1038/ngeo608
  • Davidson, E.A. & Kanter, D. 2014. Inventories and scenarios of nitrous oxide emissions. Environmental Research Letters 9(10): 105012. doi: 10.1088/1748-9326/9/10/105012
  • Dimmer, C.H., McCulloch, A., Simmonds, P.G., Nickless, G., Bassford, M.R. & Smythe-Wright, D. 2001. Tropospheric concentrations of the chlorinated solvents, tetrachloroethene and trichloroethene, measured in the remote northern hemisphere. Atmospheric Environment 35: 1171:1182. doi: 10.1016/S1352-2310(00)00427-1
  • Dlugokencky, E.J., Bruhwiler, L., White, J.W.C., Emmons, L.K., Novelli, P.C., Montzka, S.A., Masarie, K.A., Lang, P.M., Crotwell, A.M., Miller, J.B. & Gatti, L.V. 2009. Observational constraints on recent increases in the atmospheric CH4 burden. Geophysical Research Letters 36(18): 3–7. doi: 10.1029/2009GL039780
  • Dlugokencky, E.J., Masaire, K.A., Lang, P.M., Tans, P.P., Steele, L.P. & Nisbet, E.G. 1994. A dramatic decrease in the growth rate of atmospheric methane in the northern hemisphere during 1992. Geophysical Research Letters 21(1): 45–48. doi: 10.1029/93GL03070
  • Dlugokencky, E.J., Masarie, K.A., Tans, P.P., Conway, T.J. & Xiong, X. 1997. Is the Amplitude of the Methane Seasonal Cycle Changing? Atmospheric Environment 31: 21–26.
  • Dlugokencky, E.J., Walter, B.P., Masarie, K.A., Lang, P.M. & Tans, P.P. 2000. The growth rate of atmospheric methane as a constraint on its budget. Annual Meeting of the NOAA Climate Monitoring and Diagnostics Laboratory, Boulder, Colorado, USA.
  • Edwards, D.P., Emmons, L.K., Hauglustaine, D.A., Chu, D.A., Gille, J.C., Kaufman, Y.J., Pétron, G., Yurganov, L.N., Giglio, L., Deeter, M.N., Yudin, V., Ziskin, D.C., Warner, J., Lamarque, J.F., Francis, G.L., Ho, S.P., Mao, D., Chen, J., Grechko, E.I. & Drummond, J.R. 2004. Observations of carbon monoxide and aerosols from the Terra satellite: Northern Hemisphere variability. Journal of Geophysical Research Atmospheres 109(24): 1–17.
  • Ehhalt, D., Prather, M., Dentener, F., Derwent, R., Dlugokencky, E.J., Holland, E., Isaksen, I., Katima, J., Kirchhoff, V., Matson, P. & Midgley, P. (Eds). 2001. Atmospheric Chemistry and Greenhouse Gases. Richland, WA, Pacific Northwest National Laboratory (PNNL), Richland, USA.
  • Elkins, J.W., Thompson, T.M., Swanson, T.H., Butler, J.H., Hall, B.D., Cummings, S.O., Fisher, D.A., Raffo, A.G. 1993. Decrease in the growth rates of atmospheric chlorofluorocarbons 11 and 12. Nature 364: 780–783.
  • Fishman, J., Ramanathan, V., Crutzen, P.J. & Liu, S.C. 1979. Tropospheric ozone and climate. Nature 288: 818–820. doi: 10.1038/282818a0
  • Fleming, E.L., Jackman, C.H., Stolarski, R.S. & Douglass, A.R. 2011. A model study of the impact of source gas changes on the stratosphere for 1850–2100. Atmospheric Chemistry and Physics 11(16): 8515–8541. doi: 10.5194/acp-11-8515-2011
  • Forster, P.M.D.F. & Joshi, M. 2005. The role of halocarbons in the climate change of the troposphere and stratosphere. Climatic Change 71(1–2): 249–266. doi: 10.1007/s10584-005-5955-7
  • Frölicher, T.L., Joos, F., Raible, C.C. & Sarmiento, J.L. 2013. Atmospheric CO2 response to volcanic eruptions: The role of ENSO, season, and variability. Global Biogeochemical Cycles 27(1): 239–251. doi: 10.1002/gbc.20028
  • Fuhlbrügge, S. 2011. Analysis of atmospheric VSLS measurements during the DRIVE campaign in the tropical East Atlantic. Diploma thesis, Mathematics, Faculty of Natural Sciences of Christian-Albrechts, University of Kiel.
  • Galbally, I.E., Tully, M.B., Klekociuk, P. & Molloy, S.B. 2011. Long-term trends in ozone in the Southern Ocean marine boundary layer and in the southern hemisphere free troposphere. In Second Tropospheric Ozone Workshop, Tropospheric Ozone Changes: Observations, state of understanding and model performances, Toulouse, France. WMO/GAW Report No. 199.
  • Garstang, M., Tyson, P.D., Edwards, M., Kallberg, P. & Lindesay, J.A. 1996. Horizontal and vertical transport of air over southern Africa. Journal of Geophysical Research 101(D19): 23721–23736. doi: 10.1029/95JD00844
  • Gaubert, B., Worden, H.M., Arellano, A.F.J., Emmons, L.K., Tilmes, S., Barré, J., Alonso, S.M., Vitt, F., Anderson, J.L., Alkemade, F., Houweling, S., Edwards, D.P. 2017. Chemical feedback from decreasing carbon monoxide emissions. Geophysical Research Letters, 44(19): 9985–9995. doi: 10.1002/2017GL074987
  • Hashimoto, H., Nemani, R.R., White, M.A., Jolly, W.M., Piper, S.C., Keeling, C.D., Myneni, R.B. & Running, S.W. 2004. El Niño-Southern Oscillation-induced variability in terrestrial carbon cycling. Journal of Geophysical Research Atmospheres 109(23): 1–8.
  • Hauck, J., Völker, C., Wang, T., Hoppema, M., Losch, M. & Wolf-Gladrow, D.A. 2013. Seasonally different carbon flux changes in the Southern Ocean in response to the southern annular mode. Global Biogeochemical Cycles 27(4): 1236–1245. doi: 10.1002/2013GB004600
  • Hodnebrog, Ø., Etminan, M., Fuglestvedt, J.S., Marston, G., Myhre, G., Nielsen, C.J., Shine, K.P. & Wallington, T.J. 2013. Global warming potentials and radiative efficiencies of halocarbons and related compounds: A comprehensive review. Reviews of Geophysics 51(2): 300–378. doi: 10.1002/rog.20013
  • Hofmann, D., Butler, J., Conway, T., Dlugokencky, E., Elkins, J., Masarie, K., Montzka, S., Schnell, R. & Tans, P. 2006. Tracking climate forcing: The Annual Greenhouse Gas Index. Eos Transactions AGU 87(46): 1–3. doi: 10.1029/2006EO460002
  • Hopcroft, P.O., Valdes, P.J., O’Connor, F.M., Kaplan, J.O. & Beerling, D.J. 2017. Understanding the glacial methane cycle. Nature Communications 8: 14383. doi: 10.1038/ncomms14383
  • Houweling, S., Bergamaschi, P., Chevallier, F., Heimann, M., Kaminski, T., Krol, M., Michalak, A.M. & Patra, P. 2017. Global inverse modeling of CH4 sources and sinks: An overview of methods. Atmospheric Chemistry and Physics 17(1): 235–256. doi: 10.5194/acp-17-235-2017
  • Huarte, A., Cifuentes, V., Gratton, R. & Clausse, A. 2010. Correlation of methane emissions with cattle population in Argentine Pampas. Atmospheric Environment 44(23): 2780–2786. doi: 10.1016/j.atmosenv.2010.03.012
  • Intergovernmental Panel on Climate Change 2001. Climate change 2001; IPCC third assessment report. Geneva, IPCC Secretariat.
  • Intergovernmental Panel On Climate Change 2013. Climate Change 2013. In Stocker, T.F., Qin, D., Plattner, G.K., Tignor, M.M., Allen, S.K. et al. (Eds), The Physical Science Basis, Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, Cambridge University Press.
  • Jacob, D. (1999). Introduction to Atmospheric Chemistry. Princeton, NJ, Princeton University Press.
  • Jaeglé, L., Steinberger, L., Martin, R.V. & Chance, K. 2005. Global partitioning of NOx sources using satellite observations: Relative roles of fossil fuel combustion, biomass burning and soil emissions. The Royal Society of Chemistry 130: 407–423.
  • Jenner, S.L. & Abiodun, B.J. 2013. The transport of atmospheric sulfur over Cape Town. Atmospheric Environment 79: 248–260. doi: 10.1016/j.atmosenv.2013.06.010
  • Keeling, R.F., Piper, S.C., Bollenbacher, A.F. & Walker, J.S. 2009. Atmospheric CO2 records from sites in the SIO air sampling network. In Trends: A Compendium of Data on Global Change. Oak Ridge, TN, U.S. Department of Energy. pp. 16–26.
  • Khalil, M.A.K., Butenhoff, C.L. & Rasmussen, R.A. 2007. Atmospheric methane: Trends and cycles of sources and sinks. Environmental Science and Technology 41(7): 2131–2137. doi: 10.1021/es061791t
  • Kirschke, S., Bousquet, P., Ciais, P., Saunois, M., Canadell, J.G., Dlugokencky, E.J., Bergamaschi, P., Bergmann, D., Blake, D.R., Bruhwiler, L., Cameron-Smith, P., Castaldi, S., Chevallier, F., Feng, L., Fraser, A., Heimann, M., Hodson, E.L., Houweling, S., Josse, B., Fraser, P.J., Krummel, P.B., Lamarque, J.-F., Langenfelds, R.L., Le Quéré, C., Naik, V., O’Doherty, S., Palmer, P.I., Pison, I., Plummer, D., Poulter, B., Prinn, R.G., Rigby, M., Ringeval, B., Santini, M., Schmidt, M., Shindell, D.T., Simpson, I.J., Spahni, R., Steele, L.P., Strode, S.A., Sudo, K., Szopa, S., van der Werf, G.R., Voulgarakis, A., van Weele, M., Weiss, R.F., Williams, J.E. & Zeng, G. 2013. Three decades of global methane sources and sinks. Nature Geoscience 6: 813–823. doi: 10.1038/ngeo1955
  • Kroeze, C., Mosier, A. & Bouwman, L. 1999. Closing the global N20 budget: A retrospective analysis 1500–1994. Global Biogeochemical Cycles 13(1): 1–8. doi: 10.1029/1998GB900020
  • Lassey, K.R., Lowe, D.C., Manning, M.R. & Waghorn, G.C. 1992. A source inventory for atmospheric methane in New Zealand and its global perspective. Journal of Geophysical Research Atmospheres 97(D4): 3751–3765. doi: 10.1029/91JD02294
  • Le Quéré, C., Rödenbeck, C., Buitenhuis, E.T., Conway, T.J., Langenfelds, R., Gomez, A., Labuschagne, C., Ramonet, M., Nakazawa, T., Metzl, N., Gillett, N. & Heimann, M. 2007. Saturation of the Southern Ocean CO2 sink due to recent climate change. Science 316(1994): 1735–1738. doi: 10.1126/science.1136188
  • Le Quéré, C., Raupach, M.R., Canadell, J.G., Marland, G., Bopp, L., Ciais, P., Conway, T.J., Doney, S.C., Feely, R.A., Foster, P., Friedlingstein, P., Gurney, K., Houghton, R.A., House, J.I., Huntingford, C., Levy, P.E., Lomas, M.R., Majkut, J., Metzl, N., Ometto, J.P., Peters, G.P., Prentice, I.C., Randerson, J.T., Running, S.W., Sarmiento, J.L., Schuster, U., Sitch, S., Takahashi, T., Viovy, N., van der Werf, G.R. & Woodward, F.I. 2009. Trends in the sources and sinks of carbon dioxide. Nature Geoscience 2(12): 831–836. doi: 10.1038/ngeo689
  • Le Quéré, C., Andrew, R.M., Canadell, J.G., Sitch, S., Ivar Korsbakken, J., Peters, G.P., Manning, A.C., Boden, T.A., Tans, P.P., Houghton, R.A., Keeling, R.F., Alin, S., Andrews, O.D., Anthoni, P., Barbero, L., Bopp, L., Chevallier, F., Chini, L.P., Ciais, P., Currie, K., Delire, C., Doney, S.C., Friedlingstein, P., Gkritzalis, T., Harris, I., Hauck, J., Haverd, V., Hoppema, M., Klein Goldewijk, K., Jain, A.K., Kato, E., Körtzinger, A., Landschützer, P., Lefèvre, N., Lenton, A., Lienert, S., Lombardozzi, D., Melton, J.R., Metzl, N., Millero, F., Monteiro, P.M.S., Munro, D.R., Nabel, J.E.M.S., Nakaoka, S.I., O’Brien, K., Olsen, A., Omar, A.M., Ono, T., Pierrot, D., Poulter, B., Rödenbeck, C., Salisbury, J., Schuster, U., Schwinger, J., Séférian, R., Skjelvan, I., Stocker, B.D., Sutton, A.J., Takahashi, T., Tian, H., Tilbrook, B., van der Laan-Luijkx, I.T., van der Werf, G.R., Viovy, N., Walker, A.P., Wiltshire, A.J. & Zaehle, S. 2016. Global Carbon Budget 2016. Earth System Science Data 8(2): 605–649. doi: 10.5194/essd-8-605-2016
  • Lelieveld, J. & Dentener, F.J. 2000. What controls tropospheric ozone? Journal of Geophysical Research Atmospheres 105(D3): 3531–3551. doi: 10.1029/1999JD901011
  • Lelieveld, J., Crutzen, P.J. & Dentener, F.J. 1998. Changing concentration, lifetime and climate forcing of atmospheric methane. Tellus B: Chemical and Physical Meteorology 50(2): 128–150. doi: 10.3402/tellusb.v50i2.16030
  • Lenton, A., Codron, F., Bopp, L., Metzl, N., Cadule, P., Tagliabue, A. & Le Sommer, J. 2009. Stratospheric ozone depletion reduces ocean carbon uptake and enhances ocean acidification. Geophysical Research Letters 36(12): 1–5. doi: 10.1029/2009GL038227
  • Lenton, A. & Matear, R.J. 2007. Role of the Southern Annular Mode (SAM) in Southern Ocean CO2 uptake. Global Biogeochemical Cycles 21(2): 1–17. doi: 10.1029/2006GB002714
  • Levin, I. 2012. The balance of the carbon budget. Nature 488: 35. doi: 10.1038/488035a
  • Logan, J.A., Prather, M.J., Wofsy, S.C. & McElroy, M.B. 1981. Tropospheric chemistry: A global perspective. Journal of Geophysical Research 86(C8): 7210–7254. doi: 10.1029/JC086iC08p07210
  • Lovenduski, N.S., Gruber, N., Doney, S.C. & Lima, I.D. 2007. Enhanced CO2 outgassing in the Southern Ocean from a positive phase of the Southern Annular Mode. Global Biogeochemical Cycles 21(2): 1–14. doi: 10.1029/2006GB002900
  • Lüthi, D., LE Floch, M., Bereiter, B., Blunier, T., Barnola, J.-M., Siegenthaler, U., Raynaud, D., Jouzel, J., Fischer, H., Kawamura, K. & Stocker, T.F. 2008. High-resolution carbon dioxide concentration record 650,000–800,000 years before present. Nature 453(7193): 379–382. doi: 10.1038/nature06949
  • Martin, L.G., Labuschagne, C., Brunke, E.G., Weigelt, A., Ebinghaus, R. & Slemr, F. 2017. Trend of atmospheric mercury concentrations at Cape Point for 1995–2004 and since 2007. Atmospheric Chemistry and Physics 17(3): 2393–2399. doi: 10.5194/acp-17-2393-2017
  • McNorton, J., Chipperfield, M.P., Gloor, M., Wilson, C., Feng, W., Hayman, G.D., Rigby, M., Krumme, P.B., O’Doherty, S., Prinn, R.G., Weiss, R.F., Young, D., Dlugokencky, E. & Montzka, S.A. 2016. Role of OH variability in the stalling of the global atmospheric CH4 growth rate from 1999 to 2006. Atmospheric Chemistry and Physics 16(12): 7943–7956. doi: 10.5194/acp-16-7943-2016
  • Metzl, B.N., Tilbrook, B., Poisson, A. & Physique, D. 1999. The annual fCO cycle and the air–sea CO flux in the sub-Antarctic Ocean. Tellus B 51(B): 849–861. doi: 10.3402/tellusb.v51i4.16495
  • Minschwaner, K., Salawitch, R.J. & McElroy, M.B. 1993. Absorption of solar radiation by o2: implications for O3 and lifetimes of N2O, CFCl3 and CF2Cl2. Journal of Geophysical Research 98(D6): 10543–10561. doi: 10.1029/93JD00223
  • Molina, M.J. & Rowland, F.S. 1974. Stratospheric sink for chlorofluoromethanes: Chlorine-atom catalysed destruction of ozone. Nature 249: 810–812. doi: 10.1038/249810a0
  • Monks, P.S. 2005. Gas-phase radical chemistry in the troposphere. Chemical Society Reviews 34(5): 376. doi: 10.1039/b307982c
  • Monks, P.S., Archibald, A.T., Colette, A., Cooper, O., Coyle, M., Derwent, R., Fowler, D., Granier, C., Law, K.S., Mills, G.E., Stevenson, D.S., Tarasova, O., Thouret, V., von Schneidemesser, E., Sommariva, R., Wild, O. & Williams, M.L. 2015. Tropospheric ozone and its precursors from the urban to the global scale from air quality to short-lived climate forcer. Atmospheric Chemistry and Physics 15(15): 8889–8973. doi: 10.5194/acp-15-8889-2015
  • Montzka, S.A., Dlugokencky, E.J. & Butler, J.H. 2011. Non-CO2 greenhouse gases and climate change. Nature 476(7358): 43–50. doi: 10.1038/nature10322
  • Moore, J.K. & Abbot, M.R. 2000. Phytoplankton chlorophyll distributions and primary production. Journal of Geophysical Research Oceans 105(C12): 28709–28722. doi: 10.1029/1999JC000043
  • Myhre, G., Shindell, D., Bréon, F.M., Collins, W., Fuglestvedt, J., Huang, J., Koch, D., Lamarque, J.F., Lee, D., Mendoza, B. & Nakajima, T. 2013. Anthropogenic and natural radiative forcing. Climate Change 423: 658–740.
  • Nevison, C. & Holland, E. 1997. A re-examination of the impact of anthropogenically fixed nitrogen on atmospheric N2O and the stratospheric O3 layer. Journal of Geophysical Research 102(D21): 25519–25536. doi: 10.1029/97JD02391
  • Nisbet, E.G., Dlugokencky, E.J., Manning, M.R., Lowry, D., Fisher, R.E., France, J.L., Michel, S.E., Miller, J.B., White, J.W.C., Vaughn, B., Bousquet, P., Pyle, J.A., Warwick, N.J., Cain, M., Brownlow, R., Zazzeri, G., Lanoisellé, M., Manning, A.C., Gloor, E., Worthy, D.E.J., Brunke, E.G., Labuschagne, C., Wolff, E.W. & Ganesan, A.L. 2016. Rising atmospheric methane: 2007–2014 growth and isotopic shift. Global Biogeochemical Cycles 30: 1356–1370. doi: 10.1002/2016GB005406
  • Nyeki, S., Wehrli, C., Gröbner, J., Kouremeti, N., Wacker, S., Labuschagne, C., Mbatha, N. & Brunke, E.G. 2015. The GAW-PFR aerosol optical depth network: The 2008–2013 time series at Cape Point Station, South Africa. Journal of Geophysical Research Atmospheres 120(10): 5070–5084. doi: 10.1002/2014JD022954
  • Olsen, M.A., Douglass, A.R. & Schoeberl, M.R. 2002. Estimating downward cross-tropopause ozone flux using column ozone and potential vorticity. Journal of Geophysical Research Atmospheres 107(22): ACH11-1–ACH11-9.
  • Oltmans, S. & Hofmann, D. 1995. Increase in lower-stratospheric water vapour at a mid-latitude Northern Hemisphere site from 1981 to 1994. Nature 374: 146–149. doi: 10.1038/374146a0
  • Oltmans, S.J., Lefohn, A.S., Harris, J.M., Galbally, I., Scheel, H.E., Bodeker, G., Brunke, E.G., Claude, H., Tarasick, D., Johnson, B.J., Simmonds, P., Shadwick, D., Anlauf, K., Hayden, K., Schmidlin, F., Fujinaga, T., Akagi, S.K., Meyer, C., Nichol, S., Davies, J., Redondas, A. & Cuevas, E. 2006. Long-term changes in tropospheric ozone. Atmospheric Environment 40(17): 3156–3173. doi: 10.1016/j.atmosenv.2006.01.029
  • Oltmans, S.J., Lefohn, A.S., Shadwick, D., Harris, J.M., Scheel, H.E., Galbally, I., Tarasick, D.W., Johnson, B.J., Brunke, E.G., Claude, H., Zeng, G., Nichol, S., Schmidlin, F., Davies, J., Cuevas, E., Redondas, A., Naoe, H., Nakano, T. & Kawasato, T. 2013. Recent tropospheric ozone changes – A pattern dominated by slow or no growth. Atmospheric Environment 67: 331–351. doi: 10.1016/j.atmosenv.2012.10.057
  • Pepin, L., Raynaud, D., Barnola, J.-M. & Loutre, M.F. 2001. Hemispheric roles of climate forcing during glacial-interglacial transitions as deduced from the Vostok record and LLN-2D model experiments. Journal of Geophysical Research 106(D23): 31,885–31,892. doi: 10.1029/2001JD900117
  • Petit, R.J., Raynaud, D., Basile, I., Chappellaz, J., Ritz, C., Delmotte, M., Legrand, M., Lorius, C. & Pe, L. 1999. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399: 429–436. doi: 10.1038/20859
  • Portmann, R.W., Daniel, J.S. & Ravishankara, A.R. 2012. Stratospheric ozone depletion due to nitrous oxide: influences of other gases. Philosophical Transactions of the Royal Society B: Biological Sciences 367(1593): 1256–1264. doi: 10.1098/rstb.2011.0377
  • Prather, M.J. 1996. Time scales in atmospheric chemistry: Theory, GWPs for CH4 and Co, and runaway growth. Geophysical Research Letters 23(19): 2597–2600. doi: 10.1029/96GL02371
  • Prather, M.J., Holmes, C.D. & Hsu, J. 2012. Reactive greenhouse gas scenarios: Systematic exploration of uncertainties and the role of atmospheric chemistry. Geophysical Research Letters 39(9): 6–10. doi: 10.1029/2012GL051440
  • Preston-White, R.A. & Tyson, P.D. 1993. The Atmosphere and Weather of Southern Africa. Cape Town, Oxford University Press.
  • Prinn, R.G., Weiss, R.F., Fraser, P.J., Simmonds, P.G., Cunnold, D.M., Alyea, F.N., O’Doherty, S., Salameh, P., Miller, B.R., Huang, J., Wang, R.H.J., Hartley, D.E., Harth, C., Steele, L.P., Sturrock, G., Midgley, P.M. & McCulloch, A. 2000. A history of chemically and radiatively important gases in air deduced from ALE/GAGE/AGAGE. Journal of Geophysical Research 105: 17751. doi: 10.1029/2000JD900141
  • Ramanathan, V. 1975. Greenhouse effect due to chlorofluorocarbons: Climate implications. Science 190: 50–52. doi: 10.1126/science.190.4209.50
  • Ramanathan, V. & Feng, Y. 2009. Air pollution, greenhouse gases and climate change: Global and regional perspectives. Atmospheric Environment 43(1): 37–50. doi: 10.1016/j.atmosenv.2008.09.063
  • Ravishankara, A.R., Daniel, J.S. & Portmann, R.W. 2009. Nitrous oxide (N2O): the dominant ozone-depleting substance emitted in the 21st century. Science 326(October): 123–125. doi: 10.1126/science.1176985
  • Raynaud, D., Barnola, J.-M., Souchez, R., Lorrain, R., Petit, J.E., Duval, P. & Lipenkov, V.Y. 2005. The record for marine isotopic stage 11. Nature 436(7047): 39–40. doi: 10.1038/43639b
  • Revell, L.E., Tummon, F., Salawitch, R.J., Stenke, A. & Peter, T. 2015. The changing ozone depletion potential of N2O in a future climate. Geophysical Research Letters 42(22): 10047–10055. doi: 10.1002/2015GL065702
  • Rice, A.L., Butenhoff, C.L., Teama, D.G., Röger, F.H., Khalil, M.A.K. & Rasmussen, R.A. 2016. Atmospheric methane isotopic record favors fossil sources flat in 1980s and 1990s with recent increase. Proceedings of the National Academy of Sciences of the United States of America 113(39): 10791–10796. doi: 10.1073/pnas.1522923113
  • Rigby, M., Prinn, R.G., Fraser, P.J., Simmonds, P.G., Langenfelds, R.L., Huang, J., Cunnold, D.M., Steele, L.P., Krummel, P.B., Weiss, R.F., O’Doherty, S., Salameh, P.K., Wang, H.J., Harth, C.M., Mühle, J. & Porter, L.W. 2008. Renewed growth of atmospheric methane. Geophysical Research Letters 35(22): 2–7. doi: 10.1029/2008GL036037
  • Rigby, M., Prinn, R.G., O’Doherty, S., Miller, B.R., Ivy, D., Mühle, J., Harth, C.M., Salameh, P.K., Arnold, T., Weiss, R.F., Krummel, P.B., Steele, L.P., Fraser, P.J., Young, D. & Simmonds, P.G. 2014. Recent and future trends in synthetic greenhouse gas radiative forcing. Geophysical Research Letters 41(7): 2623–2630. doi: 10.1002/2013GL059099
  • Rigby, M., Montzka, S.A., Prinn, R.G., White, J.W.C., Young, D., O’Doherty, S., Lunt, M.F., Ganesan, A.L., Manning, A.J., Simmonds, P.G., Salameh, P.K., Harth, C.M., Mühle, J., Weiss, R.F., Fraser, P.J., Steele, L.P., Krummel, P.B., McCulloch, A. & Park, S. 2017. Role of atmospheric oxidation in recent methane growth. Proceedings of the National Academy of Sciences 114(21): 5373–5377. doi: 10.1073/pnas.1616426114
  • Roelofs, G.J. & Lelieveld, J. 1997. Model study of the influence of cross-tropopause O3 transports on tropospheric O3 levels. Tellus B: Chemical and Physical Meteorology 49(1): 38–55. doi: 10.3402/tellusb.v49i1.15949
  • Saunois, M., Bousquet, P., Poulter, B., Peregon, A., Ciais, P., Canadell, J.G., Dlugokencky, E.J., Etiope, G., Bastviken, D., Houweling, S., Janssens-Maenhout, G., Tubiello, F.N., Castaldi, S., Jackson, R.B., Alexe, M., Arora, V.K., Beerling, D.J., Bergamaschi, P., Blake, D.R., Brailsford, G., Brovkin, V., Bruhwiler, L., Crevoisier, C., Crill, P., Covey, K., Curry, C., Frankenberg, C., Gedney, N., Höglund-Isaksson, L., Ishizawa, M., Ito, A., Joos, F., Kim, H.S., Kleinen, T., Krummel, P., Lamarque, J.F., Langenfelds, R., Locatelli, R., Machida, T., Maksyutov, S., McDonald, K.C., Marshall, J., Melton, J.R., Morino, I., Naik, V., O’Doherty, S., Parmentier, F.J.W., Patra, P.K., Peng, C., Peng, S., Peters, G.P., Pison, I., Prigent, C., Prinn, R., Ramonet, M., Riley, W.J., Saito, M., Santini, M., Schroeder, R., Simpson, I.J., Spahni, R., Steele, P., Takizawa, A., Thornton, B.F., Tian, H., Tohjima, Y., Viovy, N., Voulgarakis, A., van Weele, M., van der Werf, G.R., Weiss, R., Wiedinmyer, C., Wilton, D.J., Wiltshire, A., Worthy, D., Wunch, D., Xu, X., Yoshida, Y., Zhang, B., Zhang, Z. & Zhu, Q. 2016. The global methane budget 2000–2012. Earth System Science Data 8(2): 697–751. doi: 10.5194/essd-8-697-2016
  • Scheel, H.E., Brunke, E.G. & Seiler, W. 1990. Trace gas measurements at the monitoring station cape point, South Africa, between 1978 and 1988. Journal of Atmospheric Chemistry 11(3): 197–210. doi: 10.1007/BF00118348
  • Scheel, H.E., Sladkovic, R., Brunke, E.G. & Seiler, W. 1994. Measurements of lower tropospheric ozone at mid-latitudes of the Northern and Southern hemisphere. In: Hudson, R. D. (Ed.), Ozone in the Troposphere and Stratosphere. NASA Conference Publication 3266. pp. 11–14.
  • Scheel, H.E., Brunke, E.G., Sladkovic, R. & Seiler, W. 1998. In situ CO concentrations at the sites Zugspitze (47° N, 11° E) and Cape Point (34° S, 18° E) in April and October 1994. Journal of Geophysical Research 103: 295–304. doi: 10.1029/96JD04010
  • Seidel, D.J., Ao, C.O., and Li, K. 2010. Estimating climatological planetary boundary layer heights from radiosonde observations: Comparison of methods and uncertainty analysis. Journal of Geophysical Research, 115(D16): D16113. doi: 10.1029/2009JD013680
  • Seiler, W., Giehl, H., Brunke, E.G. & Halliday, E.C. 1984. The seasonality of CO abundance in the Southern Hemisphere. Tellus B 36, 219–231.
  • Sherry, D., McCulloch, A., Liang, Q., Reimann, S. & Newman, P.A. 2018. Current sources of carbon tetrachloride (CCl4) in our atmosphere. Environmental Research Letters 13: 024004. doi: 10.1088/1748-9326/aa9c87
  • Shindell, D.T., Fuglestvedt, J.S. & Collins, W.J. 2017. The social cost of methane: theory and applications. Faraday Discuss. 200, 429–451. https://doi.org/10.1039/C7FD00009J
  • Shindell, D., Kuylenstierna, J.C.I., Vignati, E., van Dingenen, R., Amann, M., Klimont, Z., Anenberg, S.C., Muller, N., Janssens-Maenhout, G., Raes, F., Schwartz, J., Faluvegi, G., Pozzoli, L., Kupiainen, K., Hoglund-Isaksson, L., Emberson, L., Streets, D., Ramanathan, V., Hicks, K., Oanh, N.T.K., Milly, G., Williams, M., Demkine, V. & Fowler, D. 2012. Simultaneously mitigating near-term climate change and improving human health and food security. Science 335: 183–189. doi: 10.1126/science.1210026
  • Sillman, S. 1999. The relation between ozone, NOx and hydrocarbons in urban and polluted rural environments. Atmospheric Environment 33: 1821–1845. doi: 10.1016/S1352-2310(98)00345-8
  • Sodemann, H., Pommier, M., Arnold, S.R., Monks, S.A., Stebel, K., Burkhart, J.F., Hair, J.W., Diskin, G.S., Clerbaux, C., Coheur, P.F., Hurtmans, D., Schlager, H., Blechschmidt, A.M., Kristjánsson, J.E. & Stohl, A. 2011. Episodes of cross-polar transport in the Arctic troposphere during July 2008 as seen from models, satellite, and aircraft observations. Atmospheric Chemistry and Physics 11(8): 3631–3651. doi: 10.5194/acp-11-3631-2011
  • Solomon, S., Qin, D., Manning, M., Alley, R., Berntsen, T., Bindoff, N., Chen, Z., Chidthaisong, A., Gregory, J., Hegerl, G., Heimann, M., Hewitson, B., Hoskins, B., Joos, F., Jouzel, J., Kattsov, V., Lohmann, U., Matsuno, T., Molina, M., Nicholls, N., Overpeck, G., Raga, G., Ramaswamy, V., Ren, J., Rusticucci, M., Somerville, R., Stocker, T., Whetton, P., Wood, R. & Wratt, D. 2007. Technical summary. In Solomon, S., Qin, D., Manning, M., Marquis, M., Averyt, K., Tignor, M., Miller, H. & Chen, Z. (Eds), Climate Change 2007: The Physical Science Basis. Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, Cambridge University Press. pp. 19–91.
  • Steele, L.P., Dlugokencky, E.J., Lang, P.M., Tans, P.P., Martin, R.C. & Masarie, K.A. 1992. Slowing down of the global accumulation of atmospheric methane during the 1980s. Nature 358: 313–316. doi: 10.1038/358313a0
  • Stevenson, D.S., Young, P.J., Naik, V., Lamarque, J.F., Shindell, D.T., Voulgarakis, A., Skeie, R.B., Dalsoren, S.B., Myhre, G., Berntsen, T.K., Folberth, G.A., Rumbold, S.T., Collins, W.J., Mackenzie, I.A., Doherty, R.M., Zeng, G., van Noije, T.P.C., Strunk, A., Bergmann, D., Cameron-Smith, P., Plummer, D.A., Strode, S.A., Horowitz, L., Lee, Y.H., Szopa, S., Sudo, K., Nagashima, T., Josse, B., Cionni, I., Righi, M., Eyring, V., Conley, A., Bowman, K.W., Wild, O. & Archibald, A. 2013. Tropospheric ozone changes, radiative forcing and attribution to emissions in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). Atmospheric Chemistry and Physics 13(6): 3063–3085. doi: 10.5194/acp-13-3063-2013
  • Stolper, D.A., Bender, M.L., Dreyfus, G.B., Yan, Y. & Higgins, J.A. 2016. A Pleistocene ice core record of atmospheric O2 concentrations. Science 353(6306): 1427–1430. doi: 10.1126/science.aaf5445
  • Sussmann, R., Forster, F., Rettinger, M. & Bousquet, P. 2012. Renewed methane increase for five years (2007–2011) observed by solar FTIR spectrometry. Atmospheric Chemistry and Physics 12(11): 4885–4891. doi: 10.5194/acp-12-4885-2012
  • Takahashi, T., Sutherland, S.C., Sweeney, C., Poisson, A., Metzl, N., Tilbrook, B., Bates, N., Wanninkhof, R., Feely, R.A., Sabine, C., Olafsson, J., Nojiri, Y. 2002. Global sea – air CO2 flux based on climatological surface ocean pCO2 , and seasonal biological and temperature effects. Deep Sea Research Part II 49, 1601–1622. doi: 10.1016/S0967-0645(02)00003-6
  • Tanaka, M., Nakazawa, T. & Aoki, S. 1987. Seasonal and meridional variations of atmospheric carbon dioxide in the lower troposphere of the northern and southern hemispheres. Tellus B 39(1–2): 29–41. doi: 10.3402/tellusb.v39i1-2.15321
  • Thompson, A.M. 1992. The oxidizing capacity of the Earth’s atmosphere: probable past and future changes. Science 256(5060): 1157–1165. doi: 10.1126/science.256.5060.1157
  • Thompson, A.M., Chappellaz, J.A., Fung, I.Y. & Kucsera, T.L. 1993. The atmospheric CH4 increase since the Last Glacial Maximum: (2). Interactions with oxidants. Tellus B 45(3): 242–257. doi: 10.3402/tellusb.v45i3.15727
  • Toihir, A.M., Venkataraman, S., Mbatha, N., Sangeetha, S.K., Bencherif, H., Brunke, E.G. & Labuschagne, C. 2015. Studies on CO variation and trends over South Africa and the Indian Ocean using TES satellite data. South African Journal of Science 111(9/10): 1–9. doi: 10.17159/sajs.2015/20140174
  • Turner, A.J., Frankenberg, C., Wennberg, P.O. & Jacob, D.J. 2017. Ambiguity in the causes for decadal trends in atmospheric methane and hydroxyl. PNAS 114(21): 1–6. doi: 10.1073/pnas.1616020114
  • UNEP (United Nations Environmental Programme) Ozone Secreteriat 2000. The Montreal Protocol on Substances that Deplete the Ozone Layer as either adjusted and/or amended in London 1990, Copenhagen 1992, Vienna 1995, Montreal 1997, Beijing 1999. Kenya.
  • UNEP (United Nations Environmental Programme) Ozone Secreteriat 2016. The Montreal Protocol on Substances that Deplete the Ozone Layer, Amendment To The Montreal Protocol On Substances That Deplete The Ozone Layer: Kigali. Kigali, Rwanda.
  • van der Werf, G.R., Randerson, J.T., Giglio, L., Collatz, G.J., Mu, M., Kasibhatla, P.S., Morton, D.C., DeFRIES, R.S., Jin, Y. & van Leeuwen, T.T. 2010. Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997–2009). Atmospheric Chemistry and Physics 10(23): 11707–11735. doi: 10.5194/acp-10-11707-2010
  • Velders, G.J.M., Fahey, D.W., Daniel, J.S., McFARLAND, M. & Andersen, S.O. 2009. The large contribution of projected HFC emissions to future climate forcing. PNAS 106(27): 10949–10954. doi: 10.1073/pnas.0902817106
  • Viezee, W., Johnson, W.B. & Singh, H.B. 1983. Stratospheric ozone in the lower troposphere – II. Assessment of downward flux and ground-level impact. Atmospheric Environment 17(10): 1979–1993. doi: 10.1016/0004-6981(83)90354-2
  • Wagner, A., Blechschmidt, A.M., Bouarar, I., Brunke, E.G., Clerbaux, C., Cupeiro, M., Cristofanelli, P., Eskes, H., Flemming, J., Flentje, H., George, M., Gilge, S., Hilboll, A., Inness, A., Kapsomenakis, J., Richter, A., Ries, L., Spangl, W., Stein, O., Weller, R. & Zerefos, C. 2015. Evaluation of the MACC operational forecast system – Potential and challenges of global near-real-time modelling with respect to reactive gases in the troposphere. Atmospheric Chemistry and Physics 15(24): 14005–14030. doi: 10.5194/acp-15-14005-2015
  • Walton, N.M. 2005. Characterisation of Cape Town Brown Haze. University of the Witwatersrand.
  • Wang, W., Ciais, P., Nemani, R.R., Canadell, J.G., Piao, S., Sitch, S., White, M.A., Hashimoto, H., Milesi, C. & Myneni, R.B. 2013. Variations in atmospheric CO2 growth rates coupled with tropical temperature. Proceedings of the National Academy of Sciences 110(32): 13061–13066. doi: 10.1073/pnas.1219683110
  • Whittlestone, S., Gras, J.L. & Siems, S.T. 1998. Surface air mass origins during the First Aerosol Characterization Experiment (ACE 1). Journal of Geophysical Research 103(D13): 16341–16350. doi: 10.1029/97JD03752
  • Whittlestone, S., Kowalczyk, E., Brunke, E.G., & Labuschagne, C. 2009. Source regions for CO2 at Cape Point assessed by modelling, 222Rn and meteorological data. Internal Report. South African Weather Service. Pretoria, South Africa.
  • Wicking-Baird, M.C., de Villiers, M.G., & Dutkiewicz, R.K. 1997. Cape Town Brown Haze Study. Energy Research Institute, University of Cape Town. Cape Town, South Africa.
  • Wigley, T.M.L., Smith, S.J. & Prather, M.J. 2002. Radiative forcing due to reactive gas emissions. Journal of Climate 15: 2690–2696. doi: 10.1175/1520-0442(2002)015<2690:RFDTRG>2.0.CO;2
  • Wolff, E.W. 2011. Greenhouse gases in the Earth system: a palaeoclimate perspective. Philosophical Transactions of the Royal Society A 369: 2133–2147. doi: 10.1098/rsta.2010.0225
  • Worden, H.M., Deeter, M.N., Frankenberg, C., George, M., Nichitiu, F., Worden, J., Aben, I., Bowman, K.W., Clerbaux, C., Coheur, P.F., de Laat, A.T.J., Detweiler, R., Drummond, J.R., Edwards, D.P., Gille, J.C., Hurtmans, D., Luo, M., Martínez-Alonso, S., Massie, S., Pfister, G. & Warner, J.X. 2013. Decadal record of satellite carbon monoxide observations. Atmospheric Chemistry and Physics 13(2): 837–850. doi: 10.5194/acp-13-837-2013
  • World Meteorological Organization 2013. Guidelines for Continuous Measurements of Ozone in the Troposphere. In Galbally, E. & Schultz, M. (Eds), WMO/GAW Report No. 209. http://library.wmo.int/pmb-ged/wmo_1110.pdf.
  • World Meteorological Organization 2014a. 17th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases and Related Tracers Measurement Techniques (GGMT-2013), WMO/GAW Report No. 199. Bejing, China.
  • World Meteorological Organization 2014b. Scientific Assessment of Ozone Depletion: 2014. Report No. 55. World Meteorological Organization, Geneva, Switzerland.
  • World Meteorological Organization 2015. 18th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases and Related Tracers Measurement Techniques (GGMT-2015). WMO/GAW Report No. 229. La Jolla, Ca, USA. https://library.wmo.int/opac/doc_num.php?explnum_id=3074.
  • World Meteorological Organization 2017. GAW Data Summary Volume IV: Greenhouse Gases and Other Atmospheric Gases. WDCGG No. 41 [Electronic version]. World Data Centre for Greenhouse Gases (WDCGG). http://ds.data.jma.go.jp/gmd/wdcgg/products/publications.html (accessed 18 July 2017).
  • Wuebbles, D.J. & Hayhoe, K. 2002. Atmospheric methane and global change. Earth-Science Reviews 57(3–4): 177–210. doi: 10.1016/S0012-8252(01)00062-9
  • Xu, Y., Zaelke, D., Velders, G.J.M. & Ramanathan, V. 2013. The role of HFCs in mitigating 21st century climate change. Atmospheric Chemistry and Physics 13(12): 6083–6089. doi: 10.5194/acp-13-6083-2013
  • Yin, Y., Chevallier, F., Ciais, P., Broquet, G., Fortems-Cheiney, A., Pison, I., & Saunois, M. 2015. Decadal trends in global CO emissions as seen by MOPITT. Atmospheric Chemistry and Physics 15(23): 13433–13451. doi: 10.5194/acp-15-13433-2015
  • Zellweger, C. & Buchman, B., 2015. System and Performance Audit of surface O3, CO, CH4, CO2, and N2O at the Global GAW station Cape Point, South Africa. World Calibration Centre WCC-EMPA Report 15/4. EMPA/Laboratory Air Pollution – Environment Technology. CH-800. Dübendorf. Switzerland.
  • Zhang, Y., Cooper, O.R., Gaudel, A., Thompson, A.M., Nédélec, P., Ogino, S.-Y. & West, J.J. 2016. Tropospheric ozone change from 1980 to 2010 dominated by equatorward redistribution of emissions. Nature Geoscience 9(12): 875–879. doi: 10.1038/ngeo2827
  • Zhao, F. & Zeng, N. 2014. Continued increase in atmospheric CO2 seasonal amplitude in the 21st century projected by the CMIP5 Earth system models. Earth System Dynamics 5(2): 423–439. doi: 10.5194/esd-5-423-2014

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