The Geoengineering Model Intercomparison Project (GeoMIP): Simulations of solar radiation reduction methods (ACP/GMD inter-journal SI)(ACP/GMD inter-journal SI)
The Geoengineering Model Intercomparison Project (GeoMIP): Simulations of solar radiation reduction methods (ACP/GMD inter-journal SI)(ACP/GMD inter-journal SI)
Editor(s): GMD topic editors | Coordinator: B. Kravitz Special issue jointly organized between Atmospheric Chemistry and Physics and Geoscientific Model Development
The Geoengineering Model Intercomparison Project (GeoMIP) has been highly successful in identifying robust climate model response to various geoengineering scenarios. There are currently seven core GeoMIP simulations, with another four submitted as GeoMIP's contribution to CMIP6. These experiments evaluate model response to various forms of geoengineering, focusing on solar dimming, stratospheric sulfate aerosol injections, marine cloud brightening via sea spray, and cirrus cloud thinning. In this special issue, we examine results from these simulations that have been conducted by 15 climate modeling centers from around the world. The results presented here provide a key source of information about the range of potential climate effects from geoengineering, any possible unintended side effects that geoengineering may cause, and the efficacy of geoengineering as a response to climate change. These simulations also reveal fundamental climate responses to radiative forcing, illuminating various feedback processes and interactions between different components of climate models.

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12 Sep 2018
The climate effects of increasing ocean albedo: an idealized representation of solar geoengineering
Ben Kravitz, Philip J. Rasch, Hailong Wang, Alan Robock, Corey Gabriel, Olivier Boucher, Jason N. S. Cole, Jim Haywood, Duoying Ji, Andy Jones, Andrew Lenton, John C. Moore, Helene Muri, Ulrike Niemeier, Steven Phipps, Hauke Schmidt, Shingo Watanabe, Shuting Yang, and Jin-Ho Yoon
Atmos. Chem. Phys., 18, 13097–13113, https://doi.org/10.5194/acp-18-13097-2018,https://doi.org/10.5194/acp-18-13097-2018, 2018
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08 Nov 2018
Global streamflow and flood response to stratospheric aerosol geoengineering
Liren Wei, Duoying Ji, Chiyuan Miao, Helene Muri, and John C. Moore
Atmos. Chem. Phys., 18, 16033–16050, https://doi.org/10.5194/acp-18-16033-2018,https://doi.org/10.5194/acp-18-16033-2018, 2018
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21 Aug 2018
Changes in clouds and thermodynamics under solar geoengineering and implications for required solar reduction
Rick D. Russotto and Thomas P. Ackerman
Atmos. Chem. Phys., 18, 11905–11925, https://doi.org/10.5194/acp-18-11905-2018,https://doi.org/10.5194/acp-18-11905-2018, 2018
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02 Jul 2018
A statistical examination of the effects of stratospheric sulfate geoengineering on tropical storm genesis
Qin Wang, John C. Moore, and Duoying Ji
Atmos. Chem. Phys., 18, 9173–9188, https://doi.org/10.5194/acp-18-9173-2018,https://doi.org/10.5194/acp-18-9173-2018, 2018
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17 Jul 2018
Extreme temperature and precipitation response to solar dimming and stratospheric aerosol geoengineering
Duoying Ji, Songsong Fang, Charles L. Curry, Hiroki Kashimura, Shingo Watanabe, Jason N. S. Cole, Andrew Lenton, Helene Muri, Ben Kravitz, and John C. Moore
Atmos. Chem. Phys., 18, 10133–10156, https://doi.org/10.5194/acp-18-10133-2018,https://doi.org/10.5194/acp-18-10133-2018, 2018
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20 Jun 2018
Tropical atmospheric circulation response to the G1 sunshade geoengineering radiative forcing experiment
Anboyu Guo, John C. Moore, and Duoying Ji
Atmos. Chem. Phys., 18, 8689–8706, https://doi.org/10.5194/acp-18-8689-2018,https://doi.org/10.5194/acp-18-8689-2018, 2018
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17 Oct 2018
Upper tropospheric ice sensitivity to sulfate geoengineering
Daniele Visioni, Giovanni Pitari, Glauco di Genova, Simone Tilmes, and Irene Cionni
Atmos. Chem. Phys., 18, 14867–14887, https://doi.org/10.5194/acp-18-14867-2018,https://doi.org/10.5194/acp-18-14867-2018, 2018
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27 Feb 2018
Sulfur deposition changes under sulfate geoengineering conditions: quasi-biennial oscillation effects on the transport and lifetime of stratospheric aerosols
Daniele Visioni, Giovanni Pitari, Paolo Tuccella, and Gabriele Curci
Atmos. Chem. Phys., 18, 2787–2808, https://doi.org/10.5194/acp-18-2787-2018,https://doi.org/10.5194/acp-18-2787-2018, 2018
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15 Feb 2018
Energy transport, polar amplification, and ITCZ shifts in the GeoMIP G1 ensemble
Rick D. Russotto and Thomas P. Ackerman
Atmos. Chem. Phys., 18, 2287–2305, https://doi.org/10.5194/acp-18-2287-2018,https://doi.org/10.5194/acp-18-2287-2018, 2018
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27 Feb 2018
Sensitivity of the radiative forcing by stratospheric sulfur geoengineering to the amount and strategy of the SO2injection studied with the LMDZ-S3A model
Christoph Kleinschmitt, Olivier Boucher, and Ulrich Platt
Atmos. Chem. Phys., 18, 2769–2786, https://doi.org/10.5194/acp-18-2769-2018,https://doi.org/10.5194/acp-18-2769-2018, 2018
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19 Jan 2018
Response to marine cloud brightening in a multi-model ensemble
Camilla W. Stjern, Helene Muri, Lars Ahlm, Olivier Boucher, Jason N. S. Cole, Duoying Ji, Andy Jones, Jim Haywood, Ben Kravitz, Andrew Lenton, John C. Moore, Ulrike Niemeier, Steven J. Phipps, Hauke Schmidt, Shingo Watanabe, and Jón Egill Kristjánsson
Atmos. Chem. Phys., 18, 621–634, https://doi.org/10.5194/acp-18-621-2018,https://doi.org/10.5194/acp-18-621-2018, 2018
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21 Sep 2017
Sulfate geoengineering impact on methane transport and lifetime: results from the Geoengineering Model Intercomparison Project (GeoMIP)
Daniele Visioni, Giovanni Pitari, Valentina Aquila, Simone Tilmes, Irene Cionni, Glauco Di Genova, and Eva Mancini
Atmos. Chem. Phys., 17, 11209–11226, https://doi.org/10.5194/acp-17-11209-2017,https://doi.org/10.5194/acp-17-11209-2017, 2017
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06 Nov 2017
Marine cloud brightening – as effective without clouds
Lars Ahlm, Andy Jones, Camilla W. Stjern, Helene Muri, Ben Kravitz, and Jón Egill Kristjánsson
Atmos. Chem. Phys., 17, 13071–13087, https://doi.org/10.5194/acp-17-13071-2017,https://doi.org/10.5194/acp-17-13071-2017, 2017
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14 Dec 2017
Changing transport processes in the stratosphere by radiative heating of sulfate aerosols
Ulrike Niemeier and Hauke Schmidt
Atmos. Chem. Phys., 17, 14871–14886, https://doi.org/10.5194/acp-17-14871-2017,https://doi.org/10.5194/acp-17-14871-2017, 2017
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09 Oct 2017
Impacts of stratospheric sulfate geoengineering on tropospheric ozone
Lili Xia, Peer J. Nowack, Simone Tilmes, and Alan Robock
Atmos. Chem. Phys., 17, 11913–11928, https://doi.org/10.5194/acp-17-11913-2017,https://doi.org/10.5194/acp-17-11913-2017, 2017
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14 Jun 2017
Radiative and climate effects of stratospheric sulfur geoengineering using seasonally varying injection areas
Anton Laakso, Hannele Korhonen, Sami Romakkaniemi, and Harri Kokkola
Atmos. Chem. Phys., 17, 6957–6974, https://doi.org/10.5194/acp-17-6957-2017,https://doi.org/10.5194/acp-17-6957-2017, 2017
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13 Apr 2017
Is increasing ice crystal sedimentation velocity in geoengineering simulations a good proxy for cirrus cloud seeding?
Blaž Gasparini, Steffen Münch, Laure Poncet, Monika Feldmann, and Ulrike Lohmann
Atmos. Chem. Phys., 17, 4871–4885, https://doi.org/10.5194/acp-17-4871-2017,https://doi.org/10.5194/acp-17-4871-2017, 2017
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21 Mar 2017
Sulfate geoengineering: a review of the factors controlling the needed injection of sulfur dioxide
Daniele Visioni, Giovanni Pitari, and Valentina Aquila
Atmos. Chem. Phys., 17, 3879–3889, https://doi.org/10.5194/acp-17-3879-2017,https://doi.org/10.5194/acp-17-3879-2017, 2017
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30 May 2017
Thermodynamic and dynamic responses of the hydrological cycle to solar dimming
Jane E. Smyth, Rick D. Russotto, and Trude Storelvmo
Atmos. Chem. Phys., 17, 6439–6453, https://doi.org/10.5194/acp-17-6439-2017,https://doi.org/10.5194/acp-17-6439-2017, 2017
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12 Jan 2017
The G4Foam Experiment: global climate impacts of regional ocean albedo modification
Corey J. Gabriel, Alan Robock, Lili Xia, Brian Zambri, and Ben Kravitz
Atmos. Chem. Phys., 17, 595–613, https://doi.org/10.5194/acp-17-595-2017,https://doi.org/10.5194/acp-17-595-2017, 2017
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02 Jun 2017
Glacier evolution in high-mountain Asia under stratospheric sulfate aerosol injection geoengineering
Liyun Zhao, Yi Yang, Wei Cheng, Duoying Ji, and John C. Moore
Atmos. Chem. Phys., 17, 6547–6564, https://doi.org/10.5194/acp-17-6547-2017,https://doi.org/10.5194/acp-17-6547-2017, 2017
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08 Mar 2017
Shortwave radiative forcing, rapid adjustment, and feedback to the surface by sulfate geoengineering: analysis of the Geoengineering Model Intercomparison Project G4 scenario
Hiroki Kashimura, Manabu Abe, Shingo Watanabe, Takashi Sekiya, Duoying Ji, John C. Moore, Jason N. S. Cole, and Ben Kravitz
Atmos. Chem. Phys., 17, 3339–3356, https://doi.org/10.5194/acp-17-3339-2017,https://doi.org/10.5194/acp-17-3339-2017, 2017
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22 Dec 2016
Dynamic climate emulators for solar geoengineering
Douglas G. MacMartin and Ben Kravitz
Atmos. Chem. Phys., 16, 15789–15799, https://doi.org/10.5194/acp-16-15789-2016,https://doi.org/10.5194/acp-16-15789-2016, 2016
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11 Aug 2016
Changes in the width of the tropical belt due to simple radiative forcing changes in the GeoMIP simulations
Nicholas A. Davis, Dian J. Seidel, Thomas Birner, Sean M. Davis, and Simone Tilmes
Atmos. Chem. Phys., 16, 10083–10095, https://doi.org/10.5194/acp-16-10083-2016,https://doi.org/10.5194/acp-16-10083-2016, 2016
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04 Mar 2016
Climatic impacts of stratospheric geoengineering with sulfate, black carbon and titania injection
Anthony C. Jones, James M. Haywood, and Andy Jones
Atmos. Chem. Phys., 16, 2843–2862, https://doi.org/10.5194/acp-16-2843-2016,https://doi.org/10.5194/acp-16-2843-2016, 2016
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10 Feb 2016
Stratospheric sulfate geoengineering could enhance the terrestrial photosynthesis rate
L. Xia, A. Robock, S. Tilmes, and R. R. Neely III
Atmos. Chem. Phys., 16, 1479–1489, https://doi.org/10.5194/acp-16-1479-2016,https://doi.org/10.5194/acp-16-1479-2016, 2016
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27 Oct 2015
The Geoengineering Model Intercomparison Project Phase 6 (GeoMIP6): simulation design and preliminary results
B. Kravitz, A. Robock, S. Tilmes, O. Boucher, J. M. English, P. J. Irvine, A. Jones, M. G. Lawrence, M. MacCracken, H. Muri, J. C. Moore, U. Niemeier, S. J. Phipps, J. Sillmann, T. Storelvmo, H. Wang, and S. Watanabe
Geosci. Model Dev., 8, 3379–3392, https://doi.org/10.5194/gmd-8-3379-2015,https://doi.org/10.5194/gmd-8-3379-2015, 2015
18 Aug 2015
What is the limit of climate engineering by stratospheric injection of SO2?
U. Niemeier and C. Timmreck
Atmos. Chem. Phys., 15, 9129–9141, https://doi.org/10.5194/acp-15-9129-2015,https://doi.org/10.5194/acp-15-9129-2015, 2015
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27 Oct 2015
Stratospheric geoengineering impacts on El Niño/Southern Oscillation
C. J. Gabriel and A. Robock
Atmos. Chem. Phys., 15, 11949–11966, https://doi.org/10.5194/acp-15-11949-2015,https://doi.org/10.5194/acp-15-11949-2015, 2015
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27 Aug 2015
Climate extremes in multi-model simulations of stratospheric aerosol and marine cloud brightening climate engineering
V. N. Aswathy, O. Boucher, M. Quaas, U. Niemeier, H. Muri, J. Mülmenstädt, and J. Quaas
Atmos. Chem. Phys., 15, 9593–9610, https://doi.org/10.5194/acp-15-9593-2015,https://doi.org/10.5194/acp-15-9593-2015, 2015
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15 Jan 2015
A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models
S. Tilmes, M. J. Mills, U. Niemeier, H. Schmidt, A. Robock, B. Kravitz, J.-F. Lamarque, G. Pitari, and J. M. English
Geosci. Model Dev., 8, 43–49, https://doi.org/10.5194/gmd-8-43-2015,https://doi.org/10.5194/gmd-8-43-2015, 2015
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