29.11.2016

# New Publications

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van Hemer, Mieke (2016): Speculative promise as a driver in climate engineering research. The case of Paul Crutzen’s back-of-the-envelope calculation on solar dimming with sulfate aerosols

van Hemer, Mieke (2016): Speculative promise as a driver in climate engineering research. The case of Paul Crutzen’s back-of-the-envelope calculation on solar dimming with sulfate aerosols. In Futures. DOI 10.1016/j.futures.2016.11.006.

"In this paper, I study the generative role of speculative promise in climate engineering research. My analysis operationalizes Alfred Nordmann’s call for a ‘forensics of wishing’, a variety of technology assessment which scrutinizes the politics of anticipation in technoscience. Using scientific articles and reports as primary sources I trace the uptake and contestation of bold claims made by atmospheric scientist Paul Crutzen a decade ago."

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29.08.2016

# Media

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Slate: We’ve Heated Up the Planet. Can We Cool It Back Down?

"We can’t control volcanic eruptions, of course, but scientists who advocate for the study of solar geoengineering say that we could potentially use airplanes to add diamond dust or sulfuric acid into the stratosphere, increasing the amount of sunlight reflected from Earth."

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24.05.2016

# New Publications

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Laakso, A.; et al. (2016): Radiative and climate impacts of a large volcanic eruption during stratospheric sulfur geoengineering

Laakso, A.; Kokkola, H.; Partanen, A.-I.; Niemeier, U.; Timmreck, C.; Lehtinen, K. E. J. et al. (2016): Radiative and climate impacts of a large volcanic eruption during stratospheric sulfur geoengineering. In Atmos. Chem. Phys. 16 (1), pp. 305–323. DOI 10.5194/acp-16-305-2016.

"Here we employ a global aerosol-climate model and an Earth system model to study the radiative and climate changes occurring after an erupting volcano during solar radiation management (SRM). According to our simulations the radiative impacts of the eruption and SRM are not additive and the radiative effects and climate changes occurring after the eruption depend strongly on whether SRM is continued or suspended after the eruption."

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12.10.2015

# Media

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The Market Business: Volcano Eruptions Can Change River Flows, Impact Water Availability

"Caution against geo-engineering as climate change solution The study, published in Nature Geoscience, also cautioned against so-called geo-engineering schemes proposed as a solution for cooling down an overheating planet."

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18.08.2015

# New Publications

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Laakso, A.; et al. (2015): Radiative and climate impacts of a large volcanic eruption during stratospheric sulfur geoengineering

Laakso, A.; Kokkola, H.; Partanen, A.-I.; Niemeier, U.; Timmreck, C.; Lehtinen, K. E. J. et al. (2015): Radiative and climate impacts of a large volcanic eruption during stratospheric sulfur geoengineering. In Atmos. Chem. Phys. Discuss. 15 (15), pp. 21837–21881. DOI 10.5194/acpd-15-21837-2015.

"Here we employ a global aerosol-climate model and an earth system model to study the radiative and climate impacts of an erupting volcano during solar radiation management (SRM). According to our simulations, the radiative impacts of an eruption and SRM are not additive: in the simulated case of concurrent eruption and SRM, the peak increase in global forcing is about 40 % lower compared to a corresponding eruption into a clean background atmosphere."

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11.04.2015

# Media

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the guardian: Can volcanoes tackle climate change?

"Two hundred years ago a volcanic eruption cooled the Earth. Could it help us tackle global warming today?"

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15.02.2015

# Media

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BBC News: 'Next Pinatubo' a test of geoengineering

"Scientists who study ideas to engineer the climate to mitigate global warming say we should be ready to deploy an armada of instrumentation when Earth has its next major volcanic eruption."

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28.10.2014

# Calls & events

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News Review of Week 44

The news review of calendar week 44 in 2014 is now available here.


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27.07.2014

# New Publications

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MacKerron, Gordon (2014): Costs and economics of geoengineering

MacKerron, Gordon (2014): Costs and economics of geoengineering (CGG Working Papers, 13).

"The starting point here is the frequently observed phenomenon of ‘appraisal optimism’ or optimism bias (UK Treasury 2013)– the escalation of the costs of a new technology well beyond original expectations. These escalations have been frequent – virtually pervasive – where technologies are novel and/or the scale of activity has been large (‘megaprojects’), and they have overwhelmed any learning or economy of scale effects that have, in other technologies or products, acted to reduce costs over time."

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27.07.2014

# New Publications

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Klepper, G.; Rickels, W. (2014): Climate Engineering: Economic Considerations and Research Challenges

Klepper, G.; Rickels, W. (2014): Climate Engineering: Economic Considerations and Research Challenges. In Review of Environmental Economics and Policy 8 (2), pp. 270–289. DOI: 10.1093/reep/reu010.

"Thus we argue that a research strategy is needed that focuses on increasing our basic understanding of the earth system and conducting comprehensive assessments of the risk(s) associated with both climate change and the deployment of climate engineering."

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