Articles | Volume 16, issue 3
Research article
10 Feb 2016
Research article |  | 10 Feb 2016

Stratospheric sulfate geoengineering could enhance the terrestrial photosynthesis rate

L. Xia, A. Robock, S. Tilmes, and R. R. Neely III

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Cited articles

Allen Jr., L. H., Boote, K. J., Jones, J. W., Jones, P. H., Valle, R. R., Acock, B., Rogers, H. H., and Dahlman, R. C.: Response of vegetation to rising carbon dioxide: Photosynthesis, biomass, and seed yield of soybean, Global Biogeochem. Cy., 1, 1–14,, 1987.
Angel, R.: Feasibility of cooling the Earth with a cloud of small spacecraft near the inner Lagrange point (L1), P. Natl. Acad. Sci. USA, 103, 17184–17189,, 2006.
Bala, G., Duffy, P. B., and Taylor, K. E.: Impact of geoengineering schemes on the global hydrological cycle, P. Natl. Acad. Sci., 105, 7664–7669,, 2008.
Berdahl, M., Robock, A., Ji, D., Moore, J. C., Jones, A., Kravitz, B., and Watanabe, S.: Arctic cryosphere response in the Geoengineering Model Intercomparison Project (GeoMIP) G3 and G4 scenarios, J. Geophys. Res.-Atmos., 119, 1308–1321,, 2014.

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Short summary
Climate model simulations show that stratospheric sulfate geoengineering could impact the terrestrial carbon cycle by enhancing the carbon sink. Enhanced downward diffuse radiation, combined with cooling, could stimulate plants to grow more and absorb more carbon dioxide. This beneficial impact of stratospheric sulfate geoengineering would need to be balanced by a large number of potential risks in any future decisions about implementation of geoengineering.
Final-revised paper