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Title: Towards a comprehensive climate impacts assessment of solar geoengineering

Despite a growing literature on the climate response to solar geoengineering—proposals to cool the planet by increasing the planetary albedo—there has been little published on the impacts of solar geoengineering on natural and human systems such as agriculture, health, water resources, and ecosystems. An understanding of the impacts of different scenarios of solar geoengineering deployment will be crucial for informing decisions on whether and how to deploy it. Here we review the current state of knowledge about impacts of a solar-geoengineered climate and identify the major research gaps. We suggest that a thorough assessment of the climate impacts of a range of scenarios of solar geoengineering deployment is needed and can be built upon existing frameworks. However, solar geoengineering poses a novel challenge for climate impacts research as the manner of deployment could be tailored to pursue different objectives making possible a wide range of climate outcomes. We present a number of ideas for approaches to extend the survey of climate impacts beyond standard scenarios of solar geoengineering deployment to address this challenge. Reducing the impacts of climate change is the fundamental motivator for emissions reductions and for considering whether and how to deploy solar geoengineering. This means that themore » active engagement of the climate impacts research community will be important for improving the overall understanding of the opportunities, challenges, and risks presented by solar geoengineering.« less
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12]
  1. Inst. for Advanced Sustainability Studies, Potsdam (Germany); Harvard Univ., Cambridge, MA (United States). John A. Paulson School of Engineering and Applied Sciences
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Atmospheric Sciences and Global Change Division
  3. Inst. for Advanced Sustainability Studies, Potsdam (Germany)
  4. Potsdam Inst. for Climate Impact Research, Potsdam (Germany). Research Domain of Earth System Analysis; Humboldt Univ. of Berlin (Germany). Geography Dept.
  5. Univ. of Liverpool (United Kingdom). Inst. of Infection and Global Health
  6. Univ. of Nottingham (United Kingdom). School of Geography
  7. Univ. of Bristol (United Kingdom). School of Earth Sciences
  8. Univ. of Florida, Gainesville, FL (United States). Dept. of Agricultural and Biological Engineering
  9. Univ. of Amsterdam (Netherlands). Inst. for Biodiversity and Ecosystem Dynamics
  10. Univ. of Oslo (Norway). Dept. of Geosciences
  11. GEOMAR Helmholtz Centre for Ocean Research Kiel (Germany)
  12. Pacific Northwest National Lab. (PNNL), College Park, MD (United States). Joint Global Change Research Inst.
Publication Date:
Report Number(s):
PNNL-SA-115412
Journal ID: ISSN 2328-4277
Grant/Contract Number:
AC05-76RL01830; MR/M0501633/1; 229760/E10; 261862/E10; SPP 1689
Type:
Accepted Manuscript
Journal Name:
Earth's Future
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2328-4277
Publisher:
American Geophysical Union (AGU)
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Liverpool (United Kingdom); Univ. of Oslo (Norway); GEOMAR Helmholtz Centre for Ocean Research Kiel (Germany)
Sponsoring Org:
USDOE; Medical Research Council (MRC) (United Kingdom); Norwegian Research Council (Norway); German Research Foundation (DFG)
Contributing Orgs:
Univ. of Nottingham (United Kingdom); Univ. of Bristol (United Kingdom); Univ. of Amsterdam (Netherlands); Inst. for Advanced Sustainability Studies, Potsdam (Germany); Harvard Univ., Cambridge, MA (United States); Potsdam Inst. for Climate Impact Research, Potsdam (Germany); Humboldt Univ. of Berlin (Germany); Univ. of Florida, Gainesville, FL (United States)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; climate impacts; climate change; geoengineering; climate engineering; solar radiation management; ISI-MIP
OSTI Identifier:
1343941