ACP Atmospheric Chemistry and Physics ACP Atmos. Chem. Phys. 1680-7324 Copernicus Publications Göttingen, Germany 10.5194/acp-15-2791-2015 Biomass burning related ozone damage on vegetation over the Amazon forest: a model sensitivity study Pacifico F. 1 Folberth G. A. https://orcid.org/0000-0002-1075-440X 2 Sitch S. 3 Haywood J. M. https://orcid.org/0000-0002-2143-6634 1 2 Rizzo L. V. 4 Malavelle F. F. https://orcid.org/0000-0002-2754-9226 1 Artaxo P. https://orcid.org/0000-0001-7754-3036 5 College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK Met Office Hadley Centre, Exeter, UK Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK Department of Earth and Exact Sciences, Institute of Environmental, Chemical and Pharmaceutics Sciences, Federal University of Sao Paulo, Sao Paulo, Brazil Department of Applied Physics, Institute of Physics, University of Sao Paulo, Sao Paulo, Brazil 10 03 2015 15 5 2791 2804 Copyright: © 2015 F. Pacifico et al. 2015 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://acp.copernicus.org/articles/15/2791/2015/acp-15-2791-2015.html The full text article is available as a PDF file from https://acp.copernicus.org/articles/15/2791/2015/acp-15-2791-2015.pdf

The HadGEM2 earth system climate model was used to assess the impact of biomass burning on surface ozone concentrations over the Amazon forest and its impact on vegetation, under present-day climate conditions. Here we consider biomass burning emissions from wildfires, deforestation fires, agricultural forest burning, and residential and commercial combustion. Simulated surface ozone concentration is evaluated against observations taken at two sites in the Brazilian Amazon forest for years 2010 to 2012. The model is able to reproduce the observed diurnal cycle of surface ozone mixing ratio at the two sites, but overestimates the magnitude of the monthly averaged hourly measurements by 5–15 ppb for each available month at one of the sites. We vary biomass burning emissions over South America by ±20, 40, 60, 80 and 100% to quantify the modelled impact of biomass burning on surface ozone concentrations and ozone damage on vegetation productivity over the Amazon forest. We used the ozone damage scheme in the "high" sensitivity mode to give an upper limit for this effect. Decreasing South American biomass burning emissions by 100% (i.e. to zero) reduces surface ozone concentrations (by about 15 ppb during the biomass burning season) and suggests a 15% increase in monthly mean net primary productivity averaged over the Amazon forest, with local increases up to 60%. The simulated impact of ozone damage from present-day biomass burning on vegetation productivity is about 230 TgC yr<sup>−1</sup>. Taking into account that uncertainty in these estimates is substantial, this ozone damage impact over the Amazon forest is of the same order of magnitude as the release of carbon dioxide due to fire in South America; in effect it potentially doubles the impact of biomass burning on the carbon cycle.

 NE/J010057/1 GA01101 08/58100-2 12/14437-9 References Ainsworth, E. A., Yendrek, C. R., Sitch, S., Collins, W. J., and Emberson, L. D.: The Effects of Tropospheric Ozone on Net Primary Productivity and Implications for Climate Change, Annu. Rev. Plant Biol., 63, 637–661 , 2012. Appel, K. W., Foley, K. M., Bash, J. O., Pinder, R. W., Dennis, R. L., Allen, D. J., and Pickering, K.: A multi-resolution assessment of the Community Multiscale Air Quality (CMAQ) model v4.7 wet deposition estimates for 2002–2006, Geosci. Model Dev., 4, 357–371, <a href="http://dx.doi.org/10.5194/gmd-4-357-2011">https://doi.org/10.5194/gmd-4-357-2011</a>, 2011. Arneth, A., Monson, R. K., Schurgers, G., Niinemets, Ü., and Palmer, P. I.: Why are estimates of global terrestrial isoprene emissions so similar (and why is this not so for monoterpenes)?, Atmos. Chem. Phys., 8, 4605–4620, <a href="http://dx.doi.org/10.5194/acp-8-4605-2008">https://doi.org/10.5194/acp-8-4605-2008</a>, 2008. Arneth, A., Schurgers, G., Lathiere, J., Duhl, T., Beerling, D. J., Hewitt, C. N., Martin, M., and Guenther, A.: Global terrestrial isoprene emission models: sensitivity to variability in climate and vegetation, Atmos. Chem. Phys., 11, 8037–8052, <a href="http://dx.doi.org/10.5194/acp-11-8037-2011">https://doi.org/10.5194/acp-11-8037-2011</a>, 2011. Artaxo, P., Martins, J. V., Yamasoe, M. A., Procópio, A. S., Pauliquevis, T. M., Andreae, M. O., Guyon, P., Gatti, L. V., and Leal., A. M. C.: Physical and chemical properties of aerosols in the wet and dry season in Rondônia, Amazonia, J. Geophys. Res., 107, 8081–8095, 2002. Artaxo, P., Gatti, L V., Leal, A. M. C, Longo, K. M., de Freitas, S. R., Lara, L. L., Pauliquevis, T. M., Procópio, A. S., and Rizzo, L. V.: Atmospheric Chemistry in Amazonia: The forest and the biomass burning emissions controlling the composition of the Amazonian atmosphere, Acta Amazonica, 35, 185–196, 2005. Artaxo, P., Rizzo, L. V., Brito, J. F., Barbosa, H. M. J., Arana, A., Sena, E. T., Cirino, G. G., Bastos, W., Martin, S. T., and Andreae, M. O.: Atmospheric aerosols in Amazonia and land use change: from natural biogenic to biomass burning conditions, Faraday Discuss., 165, 203–235, 2013. Ashmore, M. R: Assessing the future global impacts of ozone on vegetation, Plant Cell Environ., 28, 949–964, 2005. Bela, M. M., Longo, K. M., Freitas, S. R., Moreira, D. S., Beck, V., Wofsy, S. C., Gerbig, C., Wiedemann, K., Andreae, M. O., and Artaxo, P.: Ozone production and transport over the Amazon Basin during the dry-to-wet and wet-to-dry transition seasons, Atmos. Chem. Phys., 15, 757–782, <a href="http://dx.doi.org/10.5194/acp-15-757-2015">https://doi.org/10.5194/acp-15-757-2015</a>, 2015. Brito, J., Rizzo, L. V., Morgan, W. T., Coe, H., Johnson, B., Haywood, J., Longo, K., Freitas, S., Andreae, M. O., and Artaxo, P.: Ground-based aerosol characterization during the South American Biomass Burning Analysis (SAMBBA) field experiment, Atmos. Chem. Phys., 14, 12069–12083, <a href="http://dx.doi.org/10.5194/acp-14-12069-2014">https://doi.org/10.5194/acp-14-12069-2014</a>, 2014. Burnett, R. T., Brook, J. R., Yung, W. T., Dales, R. E., and Krewski, D.: Association between Ozone and Hospitalization for Respiratory Diseases in 16 Canadian Cities, Environ. Res., 72, 24–31, 1997. Cirino, G. G., Souza, R. A. F., Adams, D. K., and Artaxo, P.: The effect of atmospheric aerosol particles and clouds on net ecosystem exchange in the Amazon, Atmos. Chem. Phys., 14, 6523–6543, <a href="http://dx.doi.org/10.5194/acp-14-6523-2014">https://doi.org/10.5194/acp-14-6523-2014</a>, 2014. Clark, D. B., Mercado, L. M., Sitch, S., Jones, C. D., Gedney, N., Best, M. J., Pryor, M., Rooney, G. G., Essery, R. L. H., Blyth, E., Boucher, O., Harding, R. J., Huntingford, C., and Cox, P. M.: The Joint UK Land Environment Simulator (JULES), model description – Part 2: Carbon fluxes and vegetation dynamics, Geosci. Model Dev., 4, 701–722, <a href="http://dx.doi.org/10.5194/gmd-4-701-2011">https://doi.org/10.5194/gmd-4-701-2011</a>, 2011. Colbeck, I. and Harrison, R. M.: Dry deposition of ozone: some measurements of deposition velocity and of vertical profiles to 100 metres, Atm. Environ., 19, 11, 1807–1818, 1967 Collins, W. J., Bellouin, N., Doutriaux-Boucher, M., Gedney, N., Halloran, P., Hinton, T., Hughes, J., Jones, C. D., Joshi, M., Liddicoat, S., Martin, G., O'Connor, F., Rae, J., Senior, C., Sitch, S., Totterdell, I., Wiltshire, A., and Woodward, S.: Development and evaluation of an Earth-System model – HadGEM2, Geosci. Model Dev., 4, 1051–1075, <a href="http://dx.doi.org/10.5194/gmd-4-1051-2011">https://doi.org/10.5194/gmd-4-1051-2011</a>, 2011. Cox, P. M., Huntingford, C., and Harding, R. J.: A canopy conductance and photosynthesis model for use in a GCM land surface scheme, J. Hydrol., 212, 79–94, 1998. Cox, P. M., Betts, R. A., Bunton, C. B., Essery, R. L. H., Rowntree, P. R., and Smith, J.: The impact of new land surface physics on the GCM simulation of climate and climate sensitivity, Clim. Dyn., 15, 183–203, 1999. Cox, P. M.: Description of the "TRIFFID" Dynamic Global Vegetation Model, Tech. Note 24, 17 pp., Met Off. Hadley Cent., Exeter, UK, 2001. Emmons, L., Hauglustaine, D., Muller, J., Carroll, M., Brasseur, G., Brunner, D., Staehelin, J., Thouret, V., and Marenco, A.: Data composites of airborne observations of tropospheric ozone and its precursors, J. Geophys. Res., 105, 20497–20538, 2000. Essery, R. L. H., Best, M. J., Betts, R. A., Cox, P. M., and Taylor, C. M.: Explicit representation of subgrid heterogeneity in a GCM Land Surface Scheme, J. Hydrometeorol., 4, 530–543, 2003. Felzer, B., Reilly, J., Melillo, J., Kicklighter, D., Sarofim, M., Wang, C., Prinn, R., and Zhuang, Q.: Future effects of ozone on carbon sequestration and climate change policy using a global biogeochemical model, Clim. Change 73, 345–373, 2005. Felzer, B. S., Cronin, T., Reilly, J. M., Melillo, J. M., and Wang, X.: Impacts of ozone on trees and crops, C. R. Geosci., 339, 784–798, 2007. Fiscus, E. L., Booker, F. L., and Burkey, K. O.: Crop responses to ozone: uptake, modes of action, carbon assimilation and partitioning, Plant Cell Environ, 28, 997–1011, 2005. Fishman, J., Hoell, J., Bendura, R., McNeil, R., and Kirchhoff, V.: NASA GTE TRACE A experiment (September October 1992): Overview, J. Geophys. Res., 101, 23865–23879, <a href="http://dx.doi.org/10.1029/96JD00123">https://doi.org/10.1029/96JD00123</a>, 1996. Folberth, G. A., Abraham, N. L., Dalvi, M., Johnson, C. E., Morgenstern, O., O'Connor, F. M., Pacifico, F., Young, P. A., Collins, W. J., and Pyle, J. A.: Evaluation of the new UKCA climate-composition model. Part IV. Extension to Tropospheric Chemistry and Biogeochemical Coupling between Atmosphere and Biosphere, to be summitted to Geosci. Model Dev., 2015. Gatti, L.V., Gloor, M., Miller, J. B., Doughty, C. E., Malhi Y., Domingues, L. G., Basso, L. S., Martinewski, A., Correia, C. S., Borges, V. F., Freitas, S., Braz, R., Anderson, L. O., Rocha, H., Grace, J., Phillips, O. L., and Lloyd, J.: Drought sensitivity of Amazonian carbon balance revealed by atmospheric measurements, Nature, 506, 76–80, 2014. Gedney, N., Cox, P. M., and Huntingford, C.: Climate feedback from wetland methane emissions, Geophys. Res. Lett., 31, L20503, <a href="http://dx.doi.org/10.1029/ 2004GL020919">https://doi.org/10.1029/ 2004GL020919</a>, 2004. Gordon, M., Vlasenko, A., Staebler, R. M., Stroud, C., Makar, P. A., Liggio, J., Li, S.-M., and Brown, S.: Uptake and emission of VOCs near ground level below a mixed forest at Borden, Ontario, Atmos. Chem. Phys., 14, 9087–9097, <a href="http://dx.doi.org/10.5194/acp-14-9087-2014">https://doi.org/10.5194/acp-14-9087-2014</a>, 2014. Grace, J., Mahli, Y., Higuchi, N., and Meir, P.: Productivity and carbon fluxes of tropical rain forest, in: Terrestrial Global Productivity, edited by: Roy, J., Mooney, H. A., and Saugier, B., Academic Press, San Diego, 401–426 , 2001. Guenther, A., Hewitt, C. N., Erickson, D., Fall, R., Geron, C., Graedel, T., Harley, P., Klinger, L., Lerdau, M., Mckay, W. A., Pierce, T., Scholes, B., Steinbrecher, R., Tallamraju, R., Taylor, J., and Zimmerman, P.: A global model of natural volatile organic compound emissions, J. Geophys. Res., 100, 8873–8892, 1995. Guenther, A., Karl, T., Harley, P., Wiedinmyer, C., Palmer, P. I., and Geron, C.: Estimates of global terrestrial isoprene emissions using MEGAN (Model of Emissions of Gases and Aerosols from Nature), Atmos. Chem. Phys., 6, 3181–3210, <a href="http://dx.doi.org/10.5194/acp-6-3181-2006">https://doi.org/10.5194/acp-6-3181-2006</a>, 2006. Harris, I., Jones, P. D., Osborn, T. J., Lister, D. H.: Updated high-resolution grids of monthly climatic observations – the CRU TS3.10 Dataset, Int. J. Climatol., 34, 632–642, 2014. Hurtt, G. C., Chini, L. P., Frolking, S., Betts, R., Feedema, J., Fischer, G., Klein Goldewijk, K., Hibbard, K., Janetos, A., Jones, C., Kindermann, G., Kinoshita, T., Riahi, K., Shevliakova, E., Smith, S., Stehfest, E., Thomson, A., Thorton, P., van Vuuren, D., and Wang, Y.: Harmonization of global land-use scenarios for the period 1500–2100 for IPCC-AR5, iLEAPS Newsl., 7, 6–8, 2009. Jones, C. D., Hughes, J. K., Bellouin, N., Hardiman, S. C., Jones, G. S., Knight, J., Liddicoat, S., O'Connor, F. M., Andres, R. J., Bell, C., Boo, K.-O., Bozzo, A., Butchart, N., Cadule, P., Corbin, K. D., Doutriaux-Boucher, M., Friedlingstein, P., Gornall, J., Gray, L., Halloran, P. R., Hurtt, G., Ingram, W. J., Lamarque, J.-F., Law, R. M., Meinshausen, M., Osprey, S., Palin, E. J., Parsons Chini, L., Raddatz, T., Sanderson, M. G., Sellar, A. A., Schurer, A., Valdes, P., Wood, N., Woodward, S., Yoshioka, M., and Zerroukat, M.: The HadGEM2-ES implementation of CMIP5 centennial simulations, Geosci. Model Dev., 4, 543-570, <a href="http://dx.doi.org/10.5194/gmd-4-543-2011">https://doi.org/10.5194/gmd-4-543-2011</a>, 2011. Karl, T., Yokelson, R., Guenther, A., Greenberg, J., Blake, D., and Artaxo, P.: TROFFEE (TROpical Forest and Fire Emissions Experiment): Investigating Emission, Chemistry, and Transport of Biogenic Volatile Organic Compounds in the Lower Atmosphere over Amazonia, J. Geophys. Res., 112, D18302, <a href="http://dx.doi.org/10.1029/2007JD008539">https://doi.org/10.1029/2007JD008539</a>, 2007. Kirkman, G. A., Gut, A., Ammann, C., Gatti, L. V, Cordova, A. M., Moura, M. A. L., and Meixner, F. X.: Surface exchange of nitric oxide, nitrogen dioxide, and ozone at a cattle pasture in Rondônia, Brazil, J. Geophys. Res., 107, 8083, <a href="http://dx.doi.org/10.1029/2001JD000523">https://doi.org/10.1029/2001JD000523</a>, 2002. Lamarque, J.-F., Bond, T. C., Eyring, V., Granier, C., Heil, A., Klimont, Z., Lee, D., Liousse, C., Mieville, A., Owen, B., Schultz, M. G., Shindell, D., Smith, S. J., Stehfest, E., Van Aardenne, J., Cooper, O. R., Kainuma, M., Mahowald, N., McConnell, J. R., Naik, V., Riahi, K., and van Vuuren, D. P.: Historical (1850–2000) gridded anthropogenic and biomass burning emissions of reactive gases and aerosols: methodology and application, Atmos. Chem. Phys., 10, 7017–7039, <a href="http://dx.doi.org/10.5194/acp-10-7017-2010">https://doi.org/10.5194/acp-10-7017-2010</a>, 2010. 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. N., 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., and Woodward, F. I.: Trends in the sources and sinks of carbon dioxide, Nature Geosciences, 2, 831–836 , 2009. Lippmann, M.: Health effects of tropospheric ozone: review of recent research findings and their implications to ambient air quality standards, J. Exp. An. Environ. Epid., 3, 103–129, 1993. Lloyd, J., Kolle, O., Fritsch, H., de Freitas, S. R., Silva Dias, M. A. F., Artaxo, P., Nobre, A. D., de Araújo, A. C., Kruijt, B., Sogacheva, L., Fisch, G., Thielmann, A., Kuhn, U., and Andreae, M. O.: An airborne regional carbon balance for Central Amazonia, Biogeosciences, 4, 759–768, <a href="http://dx.doi.org/10.5194/bg-4-759-2007">https://doi.org/10.5194/bg-4-759-2007</a>, 2007. Logan, J., Megretskaia, I., Miller, A., Tiao, G., Choi, D., Zhang, L., Stolarski, R., Labow, G., Hollandsworth, S., Bodeker, G., Claude, H., De Muer, D., Kerr, J., Tarasick, D., Oltmans, S., Johnson, B., Schmidlin, F., Staehelin, J., Viatte, P., and Uchino, O.: Trends in the vertical distribution of ozone: A comparison of two analyses of ozonesonde data, J. Geophys. Res., 104, 26373–26399, <a href="http://dx.doi.org/10.1029/1999JD900300">https://doi.org/10.1029/1999JD900300</a>, 1999. Martin, S. T., Andreae, M. O., Althausen, D., Artaxo, P., Baars, H., Borrmann, S., Chen, Q., Farmer, D. K., Guenther, A., Gunthe, S. S., Jimenez, J. L., Karl, T., Longo, K., Manzi, A., Müller, T., Pauliquevis, T., Petters, M. D., Prenni, A. J., Pöschl, U., Rizzo, L. V., Schneider, J., Smith, J. N., Swietlicki, E., Tota, J., Wang, J., Wiedensohler, A., and Zorn, S. R.: An overview of the Amazonian Aerosol Characterization Experiment 2008 (AMAZE-08), Atmos. Chem. Phys., 10, 11415–11438, <a href="http://dx.doi.org/10.5194/acp-10-11415-2010">https://doi.org/10.5194/acp-10-11415-2010</a>, 2010. O'Connor, F. M., Johnson, C. E., Morgenstern, O., Abraham, N. L., Braesicke, P., Dalvi, M., Folberth, G. A., Sanderson, M. G., Telford, P. J., Voulgarakis, A., Young, P. J., Zeng, G., Collins, W. J., and Pyle, J. A.: Evaluation of the new UKCA climate-composition model – Part 2: The Troposphere, Geosci. Model Dev., 7, 41–91, <a href="http://dx.doi.org/10.5194/gmd-7-41-2014">https://doi.org/10.5194/gmd-7-41-2014</a>, 2014. Oliveira, P. H. F., Artaxo, P., Pires Jr, C., de Lucca, S., Procópio, A., Holben, B., Schafer, J., Cardoso, L. F., Wofsy, S. C., and Rocha, H. R.: The effects of biomass burning aerosols and clouds on the CO<sub>2</sub> flux in Amazonia, Tellus Series B-Chemical and Physical Meteorology, 59B, 338–349, 2007. Olson, R. J., Scurlock, J. M. O., Prince, S. D., Zheng, D. L., and Johnson, K. R.(Eds.): NPP Multi-Biome: NPP and Driver Data for Ecosystem Model-Data Intercomparison, Data set available at: <a href="http://www.daac.ornl.gov">http://www.daac.ornl.gov</a> (last access: 6 March 2015) from the Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA, 2001. Ometto, J. P., Nobre, A. D., Rocha, H., Artaxo, P., and Martinelli, L.: Amazônia and the Modern Carbon Cycle: Lessons Learned. Oecologia, 143, 483–500, 2005. Pacifico, F., Harrison, S. P., Jones, C. D., Arneth, A., Sitch, S., Weedon, G. P., Barkley, M. P., Palmer, P. I., Serça, D., Potosnak, M., Fu, T.-M., Goldstein, A., Bai, J., and Schurgers, G.: Evaluation of a photosynthesis-based biogenic isoprene emission scheme in JULES and simulation of isoprene emissions under present-day climate conditions, Atmos. Chem. Phys., 11, 4371–4389, <a href="http://dx.doi.org/10.5194/acp-11-4371-2011">https://doi.org/10.5194/acp-11-4371-2011</a>, 2011. Pacifico, F., Folberth, G. A., Jones, C. D., Harrison, S. P., and Collins, W. J.: Sensitivity of biogenic isoprene emissions to past, present, and future environmental conditions and implications for atmospheric chemistry, J. Geophys. Res., 117, D22302, <a href="http://dx.doi.org/10.1029/2012JD018276">https://doi.org/10.1029/2012JD018276</a>, 2012. Palmer, J. R., and Totterdell, I. J.: Production and export in a Global Ocean Ecosystem Model, Deep Sea Res., Part I, 48, 1169–1198, 2001. Prentice, I. C. , Bondeau A., Cramer W., Harrison, S. P., Hickler, T., Lucht, W., Sitch, S., Smith, B., and Sykes, M. T.: Dynamic global vegetation modeling: quantifying terrestrial ecosystem responses to large-scale environmental change, in: Terrestrial ecosystems in a changing world, edited by: Canadell, J. G., Pataki, D. E., Pitelka, L. F., IGBP Series, Berlin, Springer, 175–192, 2007. Price, C. and Rind, D.: A simple lightning parameterization for calculating global lightning distributions, J. Geophys. Res., 97, 9919–9933, 1992. Price, C. and Rind, D.: Modeling global lightning distributions in a general circulation model, Mon. Weather Rev., 122, 1930–1939 , 1994. Riahi, K., Gruebler, A., and Nakicenovic, N.: Scenarios of long-term socio-economic and environmental development under climate stabilization, Technol. Forecast. Soc. Change, 74, 887–935, 2007. Rich, S.: Ozone damage to plants, Ann. Rev. Phytopathol., 2, 253–266, 1964. Rizzo, L. V., Artaxo, P., Müller, T., Wiedensohler, A., Paixão, M., Cirino, G. G., Arana, A., Swietlicki, E., Roldin, P., Fors, E. O., Wiedemann, K. T., Leal, L. S. M., and Kulmala, M.: Long term measurements of aerosol optical properties at a primary forest site in Amazonia, Atmos. Chem. Phys., 13, 2391–2413, <a href="http://dx.doi.org/10.5194/acp-13-2391-2013">https://doi.org/10.5194/acp-13-2391-2013</a>, 2013. Rummel, U., Ammann, C., Kirkman, G. A., Moura, M. A. L., Foken, T., Andreae, M. O., and Meixner, F. X.: Seasonal variation of ozone deposition to a tropical rain forest in southwest Amazonia, Atmos. Chem. Phys., 7, 5415–5435, <a href="http://dx.doi.org/10.5194/acp-7-5415-2007">https://doi.org/10.5194/acp-7-5415-2007</a>, 2007. Seinfeld, J. H. and Pandis, S. N.: Atmospheric Chemistry and Physics: from Air Pollution to Climate Change, Chapter 6 , J. Wiley, New York, 1998. Sierra, C. A., Harmon, M. E., Moreno, F. H., Orrego, S. A., and Del Valle, J. I.: Spatial and temporal variability of net ecosystem production in a tropical forest: testing the hypothesis of a significant carbon sink, Glob. Change Biol., 13, 838–853, 2007. Sigler, J. M., Fuentes, J. D., Heitz, R. C., Garstang, M., and Fisch, G.: Ozone dynamics and deposition processes at a deforested site in the Amazon basin, Ambio, 31, 21–27, 2002. Sitch, S., Cox, P. M., Collins, W. J., and Huntingford, C.: Indirect radiative forcing of climate change through ozone effects on the land-carbon sink, Nature, 448, 791–794, 2007. Stroud, C., Makar, P., Karl, T., Guenther, A., Geron, C., Turnipseed, A., Nemitz, E., Baker, B., Potosnak, M., and Fuentes, J. D.: Role of canopy-scale photochemistry in modifying biogenic-atmosphere exchange of reactive terpene species: Results from the CELTIC field study, J. Geophys. Res., 110, D17303, <a href="http://dx.doi.org/10.1029/2005JD005775">https://doi.org/10.1029/2005JD005775</a>, 2005. Taylor, J. A. and Lloyd, J.: Sources and sinks of atmospheric CO<sub>2</sub>, Australian Journal of Botany, 40, 407–418, 1992. Taylor, K. E., Stouffer, R., J., and Meehl, G. A.: An Overview of CMIP5 and the Experiment Design, B. Am. Meteorol. Soc., 93, 485–498 , 2012. The HadGEM2 Development Team: G. M. Martin, Bellouin, N., Collins, W. J., Culverwell, I. D., Halloran, P. R., Hardiman, S. C., Hinton, T. J., Jones, C. D., McDonald, R. E., McLaren, A. J., O'Connor, F. M., Roberts, M. J., Rodriguez, J. M., Woodward, S., Best, M. J., Brooks, M. E., Brown, A. R., Butchart, N., Dearden, C., Derbyshire, S. H., Dharssi, I., Doutriaux-Boucher, M., Edwards, J. M., Falloon, P. D., Gedney, N., Gray, L. J., Hewitt, H. T., Hobson, M., Huddleston, M. R., Hughes, J., Ineson, S., Ingram, W. J., James, P. M., Johns, T. C., Johnson, C. E., Jones, A., Jones, C. P., Joshi, M. M., Keen, A. B., Liddicoat, S., Lock, A. P., Maidens, A. V., Manners, J. C., Milton, S. F., Rae, J. G. L., Ridley, J. K., Sellar, A., Senior, C. A., Totterdell, I. J., Verhoef, A., Vidale, P. L., and Wiltshire, A.: The HadGEM2 family of Met Office Unified Model climate configurations, Geosci. Model Dev., 4, 723–757, <a href="http://dx.doi.org/10.5194/gmd-4-723-2011">https://doi.org/10.5194/gmd-4-723-2011</a>, 2011. Thompson, A., Witte, J., McPeters, R., Oltmans, S., Schmidlin, F., Logan, J., Fujiwara, M., Kirchhoff, V., Posny, F., Coetzee, G., Hoegger, B., Kawakami, S., Ogawa, T., Johnson, B., Vomel, H., and Labow, G.: Southern Hemisphere Additional Ozonesondes (SHADOZ) 1998–2000 tropical ozone climatology – 1. Comparison with Total Ozone Mapping Spectrometer (TOMS) and ground-based measurements, J. Geophys. Res., 108, 8238, <a href="http://dx.doi.org/10.1029/2001JD000967">https://doi.org/10.1029/2001JD000967</a>, 2003a. Thompson, A., Witte, J., Oltmans, S., Schmidlin, F., Logan, J., Fujiwara, M., Kirchhoff, V., Posny, F., Coetzee, G., Hoegger, B., Kawakami, S., Ogawa, T., Fortuin, J., and Kelder, H.: Southern Hemisphere Additional Ozonesondes (SHADOZ) 1998–2000 tropical ozone climatology – 2. Tropospheric variability and the zonal wave-one, J. Geophys. Res., 108, 8241, <a href="http://dx.doi.org/10.1029/2002JD002241">https://doi.org/10.1029/2002JD002241</a>, 2003b. Thompson, T. M. and Selin, N. E.: Influence of air quality model resolution on uncertainty associated with health impacts, Atmos. Chem. Phys., 12, 9753–9762, <a href="http://dx.doi.org/10.5194/acp-12-9753-2012">https://doi.org/10.5194/acp-12-9753-2012</a>, 2012. Tie, X., Brasseur, G., and Ying, Z.: Impact of model resolution on chemical ozone formation in Mexico City: application of the WRF-Chem model, Atmos. Chem. Phys., 10, 8983–8995, <a href="http://dx.doi.org/10.5194/acp-10-8983-2010">https://doi.org/10.5194/acp-10-8983-2010</a>, 2010. van der Werf, G. R., Randerson, J. T., Giglio, L., Collatz, G. J., Kasibhatla, P. S., and Arellano Jr., A. F.: Interannual variability in global biomass burning emissions from 1997 to 2004, Atmos. Chem. Phys., 6, 3423–3441, <a href="http://dx.doi.org/10.5194/acp-6-3423-2006">https://doi.org/10.5194/acp-6-3423-2006</a>, 2006. 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., and van Leeuwen, T. T.: Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997–2009), Atmos. Chem. Phys., 10, 11707–11735, <a href="http://dx.doi.org/10.5194/acp-10-11707-2010">https://doi.org/10.5194/acp-10-11707-2010</a>, 2010. Valari, M. and Menut, L.: Does an increase in air quality Models' resolution bring surface ozone concentrations closer to reality?, J. Atm. Oceanic Tech., 25, 1955–1968, 2008. Wesely, M. L.: Parameterization of surface resistances to gaseous dry deposition in regional-scale numerical models, Atmos. Environ., 23, 1293–1304, 1989. Yienger, J. J. and Levy II, H.: Global inventory of soil-biogenic NO<i><sub>x</sub></i> emissions, J. Geophys. Res., 100, 11447–11464, 1995.