Chemistry-driven changes strongly influence climate forcing from vegetation emissions
-
Published:2022-11-23
Issue:1
Volume:13
Page:
-
ISSN:2041-1723
-
Container-title:Nature Communications
-
language:en
-
Short-container-title:Nat Commun
Author:
Weber JamesORCID, Archer-Nicholls Scott, Abraham Nathan Luke, Shin Youngsub Matthew, Griffiths PaulORCID, Grosvenor Daniel P., Scott Catherine E.ORCID, Archibald Alex T.
Abstract
AbstractBiogenic volatile organic compounds (BVOCs) affect climate via changes to aerosols, aerosol-cloud interactions (ACI), ozone and methane. BVOCs exhibit dependence on climate (causing a feedback) and land use but there remains uncertainty in their net climatic impact. One factor is the description of BVOC chemistry. Here, using the earth-system model UKESM1, we quantify chemistry’s influence by comparing the response to doubling BVOC emissions in the pre-industrial with standard and state-of-science chemistry. The net forcing (feedback) is positive: ozone and methane increases and ACI changes outweigh enhanced aerosol scattering. Contrary to prior studies, the ACI response is driven by cloud droplet number concentration (CDNC) reductions from suppression of gas-phase SO2 oxidation. With state-of-science chemistry the feedback is 43% smaller as lower oxidant depletion yields smaller methane increases and CDNC decreases. This illustrates chemistry’s significant influence on BVOC’s climatic impact and the more complex pathways by which BVOCs influence climate than currently recognised.
Funder
RCUK | Natural Environment Research Council Cambridge Trust Vice Chancellor's Award
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
Reference65 articles.
1. Naik, V. et al. Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Masson-Delmotte, V., Zhai, P., Pirani, A., Connors, S. L., Péan, C., Berger, S., Caud, N., Chen, Y., Goldfarb, L., Gomis, M. I., Huang, M., Leitzell, K., Lonnoy, E., Matthews, J. B. R., Maycock, T. K., Waterfield, T., Yelekçi, O., Yu, R. & Zhou, B. (eds.)]. (Cambridge University Press, 2021). 2. Lacis, A. A., Wuebbles, D. J. & Logan, J. A. Radiative forcing of climate by changes in the vertical distribution of ozone. J. Geophys. Res.: Atmospheres 95, 9971–9981 (1990). 3. Boucher, O. et al. Clouds and Aerosols. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. [Stocker, T. F., Qin, D., Plattner, G. -K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V. & Midgley, P. M. (eds.)]. (Cambridge University Press, 2013) pp. 571–658. 4. Karset, I. H. et al. Strong impacts on aerosol indirect effects from historical oxidant changes. Atmos. Chem. Phys. 18, 7669–7690 (2018). 5. Tilmes, S. et al. Climate forcing and trends of organic aerosols in the Community Earth System Model (CESM2). J. Adv. Modeling Earth Syst. 11, 4323–4351 (2019).
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|