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  • Presentation | GC12A: Advances in Climate Engineering Science: Benefits, Risks, and Uncertainties I Oral
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  • GC12A-07: Climate impacts in marine cloud brightening scenario simulations
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  • Location Icon203-205
    NOLA CC
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Author(s):
Haruki Hirasawa, University of Washington (First Author, Presenting Author)
Matthew Henry, University of Exeter
Philip Rasch, University of Washington
Sarah Doherty, University of Washington
Robert Wood, University of Washington
James Haywood, University of Exeter
Knut von Salzen, University of Washington Seattle Campus
Jean-Francois Lamarque, SilverLining
Alex Wong, SilverLining


Global climate models suggest that marine cloud brightening (MCB) can deliver substantial cooling. However, the climate response to MCB depends strongly on where it is applied. Here, we consider a novel MCB intervention scenario, in which MCB is applied in the midlatitude oceans, and conduct simulations in three models in which MCB is scaled up to offset greenhouse gas warming after 2035. We find that MCB can maintain temperatures at the target 2020-2039 levels and that it substantially reduces the spatial extent of significant temperature and precipitation anomalies, similar to recent SAI scenario simulations. We propose that this midlatitude MCB scenario serve as a basis for future model intercomparison protocols.



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