CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble Project

This paper describes the stratospheric aerosol geoengineering large ensemble (GLENS) project, which promotes the use of an unique model dataset, performed with Community Earth System Model, using the Whole Atmosphere Community Climate Model as its atmospheric component (CESM1(WACCM)), to investigate...

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Bibliographic Details
Published in:Bulletin of the American Meteorological Society
Main Authors: Tilmes, Simone, Richter, Jadwiga H., Kravitz, Ben, MacMartin, Douglas G., Mills, Michael J., Simpson, Isla R., Glanville, Anne S., Fasullo, John T., Phillips, Adam S., Lamarque, Jean -Francois, Tribbia, Joseph, Edwards, Jim, Mickelson, Sheri, Ghosh, Siddhartha
Language:unknown
Published: 2022
Subjects:
58 GEOSCIENCES
Sea ice
Online Access:http://www.osti.gov/servlets/purl/1497049
https://www.osti.gov/biblio/1497049
https://doi.org/10.1175/BAMS-D-17-0267.1
Description
Summary:This paper describes the stratospheric aerosol geoengineering large ensemble (GLENS) project, which promotes the use of an unique model dataset, performed with Community Earth System Model, using the Whole Atmosphere Community Climate Model as its atmospheric component (CESM1(WACCM)), to investigate global and regional impacts of geoengineering. The performed simulations target multiple simultaneous climate goals unlike many earlier studies that targeted globally averaged surface temperature. This strategic approach is expected to reduce some of the previously found adverse effects of stratospheric aerosol geoengineering, including uneven cooling between the poles and equator and shifts in tropical precipitation. An ensemble of 20 members allows the identification of forced changes in global and regional climate variables in the coupled atmosphere, land, sea-ice, and ocean system in the presence of internal variability. Here, we invite the broader community to perform in-depth analysis 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. (Capsule Summary) A community project that enables analysis of robust global and regional changes resulting from strategic stratospheric aerosol geoengineering in the presence of internal climate variability.

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