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Title: Geoengineering with stratospheric aerosols: What do we not know after a decade of research?: GEOENGINEERING: WHAT DO WE NOT KNOW?

Any well-informed future decision on whether and how to deploy solar geoengineering requires balancing the impacts (both intended and unintended) of intervening in the climate against the impacts of not doing so. In spite of the tremendous progress in the last decade, the current state of knowledge remains insufficient to support an assessment of this balance, even for stratospheric aerosol geoengineering (SAG), arguably the best understood (practical) geoengineering method. We then articulate key unknowns associated with SAG, including both climate-science and design questions, as an essential step toward developing a future strategic research program that could address outstanding uncertainties.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Cornell Univ., Ithaca, NY (United States). Mechanical and Aerospace Engineering
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Atmospheric Science and Global Change Division
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
PNNL-SA-118070
Journal ID: ISSN 2328-4277
Grant/Contract Number:
AC0576RL01830; AC05-76RL01830
Type:
Accepted Manuscript
Journal Name:
Earth's Future
Additional Journal Information:
Journal Volume: 4; Journal Issue: 11; Journal ID: ISSN 2328-4277
Publisher:
American Geophysical Union (AGU)
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; geoengineering; uncertainty
OSTI Identifier:
1347870
Alternate Identifier(s):
OSTI ID: 1338254