15.04.2014

# New Publications

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Schaller, N.; et al. (2014): The asymmetry of the climate system's response to solar forcing changes and its implications for geoengineering scenarios

Schaller, N.; Sedláček, J.; Knutti, R. (2014): The asymmetry of the climate system's response to solar forcing changes and its implications for geoengineering scenarios. In J. Geophys. Res. Atmos., pp. n/a. DOI 10.1002/2013JD021258.

"Motivated by proposals to compensate CO2-induced warming with a decrease in solar radiation, this study investigates how single forcing simulations should be combined to best represent the spatial patterns of surface temperature and precipitation of idealised geoengineering scenarios."

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02.04.2014

# New Publications

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Huneeus, Nicolas; et al. (2014): Forcings and feedbacks in the GeoMIP ensemble for a reduction in solar irradiance and increase in CO2

Huneeus, Nicolas; Boucher, Olivier; Alterskjaer, Kari; Cole, Jason N. S.; Curry, Charles L.; Ji, Duoying et al. (2014): Forcings and feedbacks in the GeoMIP ensemble for a reduction in solar irradiance and increase in CO2. In J. Geophys. Res. Atmos., pp. n/a. DOI 10.1002/2013JD021110.

"The forcing and feedback parameters of the net energy flux, as well as its different components at the top-of-atmosphere (TOA) and surface, were examined in ten Earth System Models to better understand the impact of solar radiation management on the energy budget. In spite of their very different nature, the feedback parameter and its components at the TOA and surface are almost identical for the two forcing mechanisms, not only in the global mean, but also in their geographical distributions."

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31.03.2014

# Media

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CBC news: Give geoengineering a chance to fix climate change: David Keith

"If you want to see sparks fly, try suggesting geoengineering as a solution to global warming"

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24.02.2014

# New Publications

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Gardiner, Stephen (2014): Why ‘global public good’ is a treacherous term, especially for geoengineering

Gardiner, Stephen (2014): Why ‘global public good’ is a treacherous term, especially for geoengineering. In Climatic Change. DOI 10.1007/s10584-014-1079-2.

Expanded and refined argumentation based on Gardiner, Stephen M. (2013). "This discussion reinforces my suggestion that it is time to excise the term ‘global public good’ from the framing of SSI [stratospheric sulfur injection], and perhaps more generally."

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20.12.2013

# Media

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NewScientist: Rudolph to the rescue: Reindeer geoengineering

On CE and Christmas. (paywall)

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11.12.2013

# New Publications

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Bellamy, Rob (2013): Framing Geoengineering Assessment

Bellamy, Rob (2013): Framing Geoengineering Assessment (Geoengineering Our Climate? Working Paper and Opinion Article Series).

"In support of decision making, the selection of contexts and methods in technology assessment both constitute broad sites of instrumental framing, which act to condition assessment outcomes."

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27.11.2013

# New Publications

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Kravitz, Ben; et al. (2013): Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results

Kravitz, Ben; Forster, Piers M.; Jones, Andy; Robock, Alan; Alterskjaer, Kari; Boucher, Olivier et al. (2013): Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results. In J. Geophys. Res. Atmos. 118 (19), pp. 11,175. DOI 10.1002/jgrd.50856.

"We outline here a proposal for three coordinated climate modeling experiments to test aspects of sea spray geoengineering, to be conducted under the auspices of the Geoengineering Model Intercomparison Project (GeoMIP)."

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27.11.2013

# New Publications

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Kravitz, Ben; et al. (2013): An energetic perspective on hydrological cycle changes in the Geoengineering Model Intercomparison Project (GeoMIP)

Kravitz, Ben; Rasch, Philip J.; Forster, Piers M.; Andrews, Timothy; Cole, Jason N. S.; Irvine, Peter J. et al. (2013): An energetic perspective on hydrological cycle changes in the Geoengineering Model Intercomparison Project (GeoMIP). In J. Geophys. Res. Atmos., pp. n/a. DOI 10.1002/2013JD020502.

"We apply this energetic perspective to output from 11 fully coupled atmosphere-ocean general circulation models simulating experiment G1 of the Geoengineering Model Intercomparison Project (GeoMIP), which achieves top-of-atmosphere energy balance between an abrupt quadrupling of CO2 from preindustrial levels (abrupt4xCO2) and uniform solar irradiance reduction."

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27.11.2013

# Calls & events

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Symposium on CE: ‘Klimaatengineering: hype, hoop of wanhoop?’

12.12.2013, Rathenau Instituut, The Hague (NL)

Dutch Symposium on CE with an English presentation by Jack Stilgoe.

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08.10.2013

# New Publications

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MacDougal, Andrew. H. (2013): Reversing climate warming by artificial atmospheric carbon-dioxide removal. can a Holocene-like climate be restored? (pre-final)

MacDougal, Andrew. H. (2013): Reversing climate warming by artificial atmospheric carbon-dioxide removal. can a Holocene-like climate be restored? (pre-final). In Geophys. Res. Lett. DOI 10.1002/2013GL057467.

"In this study experiments are conducted using the University of Victoria Earth system climate model forced with novelfuture scenarios to explore the reversibility of climate warming as a response to a gradual return to pre-industrial radiative forcing."

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