Articles | Volume 20, issue 10
https://doi.org/10.5194/acp-20-6193-2020
https://doi.org/10.5194/acp-20-6193-2020
Research article
 | 
28 May 2020
Research article |  | 28 May 2020

Temperature response measurements from eucalypts give insight into the impact of Australian isoprene emissions on air quality in 2050

Kathryn M. Emmerson, Malcolm Possell, Michael J. Aspinwall, Sebastian Pfautsch, and Mark G. Tjoelker

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Cited articles

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, https://doi.org/10.5194/acp-11-8037-2011, 2011. a
Aspinwall, M. J., Pfautsch, S., Tjoelker, M. G., Vårhammar, A., Possell, M., Drake, J. E., Reich, P. B., Tissue, D. T., Atkin, O. K., Rymer, P. D., Dennison, S., and Van Sluyter, S. C.: Range size and growth temperature influence Eucalyptus species responses to an experimental heatwave, Glob. Change Biol., 25, 1665–1684, https://doi.org/10.1111/gcb.14590, 2019. a, b
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Bauwens, M., Stavrakou, T., Müller, J.-F., Van Schaeybroeck, B., De Cruz, L., De Troch, R., Giot, O., Hamdi, R., Termonia, P., Laffineur, Q., Amelynck, C., Schoon, N., Heinesch, B., Holst, T., Arneth, A., Ceulemans, R., Sanchez-Lorenzo, A., and Guenther, A.: Recent past (1979–2014) and future (2070–2099) isoprene fluxes over Europe simulated with the MEGAN–MOHYCAN model, Biogeosciences, 15, 3673–3690, https://doi.org/10.5194/bg-15-3673-2018, 2018. a
Behnke, K., Loivamäki, M., Zimmer, I., Rennenberg, H., Schnitzler, J.-P., and Louis, S.: Isoprene emission protects photosynthesis in sunfleck exposed Grey poplar, Photosynthesis research, 104, 5–17, https://doi.org/10.1007/s11120-010-9528-x, 2010. a
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Short summary
Australian cities with a high biogenic influence will see higher pollution levels in a warmer climate. We show that four Eucalyptus species grown in future-climate conditions can emit isoprene at temperatures 9 K above the peak temperatures capping isoprene in biogenic-emission models. With these measurements, we predict up to 2 ppb increases in isoprene in 2050, causing up to 21 ppb of ozone and 0.4 µg m−3 of aerosol in Sydney. The ozone increase is one-fifth of the hourly air quality limit.
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