• DOI:10.1175/BAMS-D-17-0267.1
• Corpus ID: 125977140

CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble Project

@article{Tilmes2018CESM1WACCMSA,
  title={CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble Project},
  author={Simone Tilmes and Jadwiga H. Richter and Ben Kravitz and Douglas G. MacMartin and Michael J. Mills and Isla Ruth Simpson and Anne S. Glanville and John T. Fasullo and Adam S. Phillips and Jean‐François Lamarque and Joseph J. Tribbia and Jim Edwards and Sheri A. Mickelson and Siddhartha S. Ghosh},
  journal={Bulletin of the American Meteorological Society},
  year={2018}
}

• S. Tilmes, J. Richter, +11 authors Siddhartha S. Ghosh
• Published 1 November 2018
• Environmental Science
• Bulletin of the American Meteorological Society

This paper describes the Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) project, which promotes the use of a unique model dataset, performed with the Community Earth System Model, with the Whole Atmosphere Community Climate Model as its atmospheric component [CESM1(WACCM)], to investigate global and regional impacts of geoengineering. The performed simulations were designed to achieve multiple simultaneous climate goals, by strategically placing sulfur injections at four different locations in the stratosphere, unlike many earlier studies that targeted globally averaged surface temperature by placing injections in regions at or around the equator. This advanced approach reduces some of the previously found adverse effects of stratospheric aerosol geoengineering, including uneven cooling between the poles and the equator and shifts in tropical precipitation. The 20-member ensemble increases the ability to distinguish between forced changes and changes due to climate variability in global and regional climate variables in the coupled atmosphere, land, sea ice, and ocean system. We invite the broader community to perform in-depth analyses of climate-related impacts and to identify processes that lead to changes in the climate system as the result of a strategic application of stratospheric aerosol geoengineering.