Articles | Volume 21, issue 2
https://doi.org/10.5194/acp-21-1105-2021
https://doi.org/10.5194/acp-21-1105-2021
Research article
 | 
27 Jan 2021
Research article |  | 27 Jan 2021

Climate-driven chemistry and aerosol feedbacks in CMIP6 Earth system models

Gillian Thornhill, William Collins, Dirk Olivié, Ragnhild B. Skeie, Alex Archibald, Susanne Bauer, Ramiro Checa-Garcia, Stephanie Fiedler, Gerd Folberth, Ada Gjermundsen, Larry Horowitz, Jean-Francois Lamarque, Martine Michou, Jane Mulcahy, Pierre Nabat, Vaishali Naik, Fiona M. O'Connor, Fabien Paulot, Michael Schulz, Catherine E. Scott, Roland Séférian, Chris Smith, Toshihiko Takemura, Simone Tilmes, Kostas Tsigaridis, and James Weber

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Cited articles

Ackerley, D., Joshi, M. M., Highwood, E. J., Ryder, C. L., Harrison, M. A. J., Walters, D. N., Milton, S. F., and Strachan, J.: A comparison of two dust uplift schemes within the same general circulation model, Adv. Meteorol., 2012, 260515, https://doi.org/10.1155/2012/260515, 2012. 
Alizadeh Choobari, O., Zawar-Reza, P., and Sturman, A.: Feedback between windblown dust and planetary boundary-layer characteristics: Sensitivity to boundary and surface layer parameterizations, Atmos. Environ., 61, 294–304, https://doi.org/10.1016/j.atmosenv.2012.07.038, 2012. 
Arneth, A., Harrison, S. P., Zaehle, S., Tsigaridis, K., Menon, S., Bartlein, P. J., Feichter, J., Korhola, A., Kulmala, M., O'Donnell, D., Schurgers, G., Sorvari, S., and Vesala, T.: Terrestrial biogeochemical feedbacks in the climate system, Nat. Geosci., 3, 525–532, https://doi.org/10.1038/ngeo905, 2010. 
Bauer, S. E., Tsigaridis, K., Faluvegi, G., Kelley, M., Lo, K. K., Miller, R. L., Nazarenko, L., Schmidt, G. A., and Wu, J.: Historical (1850–2014) Aerosol Evolution and Role on Climate Forcing Using the GISS ModelE2.1 Contribution to CMIP6, J. Adv. Model. Earth Sy., 12, e01978, https://doi.org/10.1029/2019ms001978, 2020. 
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We find that increased temperatures affect aerosols and reactive gases by changing natural emissions and their rates of removal from the atmosphere. Changing the composition of these species in the atmosphere affects the radiative budget of the climate system and therefore amplifies or dampens the climate response of climate models of the Earth system. This study found that the largest effect is a dampening of climate change as warmer temperatures increase the emissions of cooling aerosols.
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