CO₂-removal News

Financial Express: Time for a man-made solution for a man-made problem?

As world leaders congregate in Paris for the UN Climate Conference, a special report in the Economist discusses some novel technical solutions, which, if implemented, could pave the way to stopping global warming and reducing carbon emissions. One solution called “geo-engineering” involves the direct capturing of carbon dioxide from the atmosphere, through the use of plants specifically grown in power stations.

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Sargoni, Janine; Lockley, Andrew (2015): Environment Policy. Solar Radiation Management and the voluntary carbon market

Sargoni, Janine; Lockley, Andrew (2015): Environment Policy. Solar Radiation Management and the voluntary carbon market. In Environmental Law Review 17 (4), pp.[nbsp]266–269. DOI: 10.1177/1461452915611277[nbsp]

„The evidence suggests that SRM may also cause a reduction in atmospheric CO2, thereby creating potential carbon credit accrual. The emergence of private interests, in the form of credits tradeable in the voluntary carbon markets, represents a new challenge for the effective public regulation of SRM. Without an appropriate response, major, novel and potentially unacceptable risks to the climate system, biosphere and society may occur.“

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KIB: Climate Engineering – A Technofix to Solve the Problem of Climate Change?

„In this article, we take up these questions, arguing that talking about climate engineering as a technological solution to a social problem – i.e., climate change – can discursively lead to the side-lining of these repercussions and of alternative solutions to climate change. To do so, we will first lay out the rationale of climate engineering and explain what it is. In a second step, we identify potential technical and political side-effects before we critically discuss whether in the current debate climate engineering being framed as a ‘technological fix’. In the conclusion, we summarize our argumentation and provide an outlook on the politics of climate engineering.“

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Kristjánsson, Jón Egill; et al. (2015): The hydrological cycle response to cirrus cloud thinning

Kristjánsson, Jón Egill; Muri, Helene; Schmidt, Hauke (2015): The hydrological cycle response to cirrus cloud thinning. In Geophys. Res. Lett., pp.[nbsp]n/a-n/a. DOI: 10.1002/2015GL066795[nbsp]

„Using a global climate model, we investigate the hydrological cycle response to ‘cirrus cloud thinning (CCT)’, which is a proposed climate engineering technique that seeks to enhance outgoing longwave radiation. Investigations of the ‘fast response’ in experiments with fixed sea surface temperatures reveal that CCT causes a significant enhancement of the latent heat flux and precipitation. This is due to enhanced radiative cooling of the troposphere, which is opposite to the effect of increased CO2 concentrations.“

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