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Rethinking the susceptibility-based strategy for marine cloud brightening climate intervention: experiment with CESM2 and its implications
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  • Chih-Chieh Chen,
  • Jadwiga H. Richter,
  • Walker Lee,
  • Douglas G MacMartin,
  • Ben Kravitz
Chih-Chieh Chen

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Jadwiga H. Richter
National Center for Atmospheric Research (UCAR)
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Walker Lee
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Douglas G MacMartin
Cornell University
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Ben Kravitz
Indiana University
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Previous modeling studies indicate that even though marine cloud brightening under a susceptibility-based strategy is effective in reducing the global average surface temperature, it triggers a La Niña-like sea-surface temperature response with cooling mostly confined within lower latitudes. Here we explore a different cloud seeding strategy involving seeding of regions with low susceptibility. Simulations with the Community Earth System Model, version 2 (CESM2) reveal that because the regional forcing is weaker and more widespread, cooling is more evenly distributed over the globe. This new strategy also does not result in the La Niña-like state seen in the other strategies.
29 Mar 2024Submitted to ESS Open Archive
01 Apr 2024Published in ESS Open Archive