10.04.2018

# New Publications

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Lenton, Andrew; et al. (2018): Assessing carbon dioxide removal through global and regional ocean alkalinization under high and low emission pathways

Lenton, Andrew; Matear, Richard J.; Keller, David P.; Scott, Vivian; Vaughan, Naomi E. (2018): Assessing carbon dioxide removal through global and regional ocean alkalinization under high and low emission pathways. In Earth Syst. Dynam. 9 (2), pp. 339–357. DOI: 10.5194/esd-9-339-2018.

"Artificial ocean alkalinization (AOA) is capable of reducing atmospheric CO2 concentrations and surface warming and addressing ocean acidification. Here, we simulate global and regional responses to alkalinity (ALK) addition (0.25 PmolALK yr−1) over the period 2020–2100 using the CSIRO-Mk3L-COAL Earth System Model, under high (Representative Concentration Pathway 8.5; RCP8.5) and low (RCP2.6) emissions. While regionally there are large changes in alkalinity associated with locations of AOA, globally we see only a very weak dependence on where and when AOA is applied. "

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10.04.2018

# Media

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Science Daily: Geoengineering risks losers as well as winners for climate and wildfire risks

"Artificially altering the climate system to limit global warming to 1.5 degrees Celsius could increase the risks of wildfires in some areas, new research suggests."

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10.04.2018

# Media

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Science Newsline: Geoengineering Risks Losers as Well as Winners for Climate And Wildfire Risks

"However, the new research suggests that this method of geoengineering could also introduce its own new impacts by shifting global rainfall patterns. The research by scientists at the University of Exeter and the Met Office Hadley Centre, carried out as part of the EU-funded project HELIX, looked at the implications of this for global patterns of wildfire using computer models of the global climate."

 

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10.04.2018

# Media

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Technology News: Geoengineering risks losers as well as winners for climate and wildfire risks

"Artificially altering the climate system to limit global warming to 1.5 degrees Celsius could increase the risks of wildfires in some areas, new research suggests."

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10.04.2018

# Media

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Phys.org: Geoengineering risks losers as well as winners for climate and wildfire risks

"Artificially altering the climate system to limit global warming to 1.5C could increase the risks of wildfires in some areas, new research suggests. While the international community is already aiming to limit global warming to below 2C by reducing greenhouse gas emissions, the more ambitious aim of a 1.5C limit is known to be challenging to reach in this way.

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10.04.2018

# New Publications

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Burton, C.; et al. (2018): Will fire danger be reduced by using Solar Radiation Management to limit global warming to 1.5°C compared to 2.0°C?

Burton, C.; Betts, R. A.; Jones, C. D.; Williams, K. (2018): Will fire danger be reduced by using Solar Radiation Management to limit global warming to 1.5°C compared to 2.0°C? In Geophys. Res. Lett. DOI: 10.1002/2018GL077848.

"Here we assess one theoretical solution using Solar Radiation Management to limit global mean warming to 1.5°C above pre‐industrial temperatures, and use the McArthur fire danger index to evaluate the change in fire danger. The results show that globally fire danger is reduced in most areas when temperatures are limited to 1.5°C compared to 2.0°C. The number of days where fire danger is ‘high’ or above is reduced by up to 30 days per year on average, although there are regional variations. In certain regions, fire danger is increased, experiencing 31 more days above ‘high’ fire danger. "

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10.04.2018

# New Publications

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Shue, Henry (2018): Mitigation gambles. Uncertainty, urgency and the last gamble possible

Shue, Henry (2018): Mitigation gambles. Uncertainty, urgency and the last gamble possible. In Philos Transact A Math Phys Eng Sci 376 (2119). DOI: 10.1098/rsta.2017.0105.

"Reliance on negative emissions later instead of ambitious mitigation now permits the passing of tipping points for irreversible change meanwhile, and non-carbon energy is rapidly becoming price competitive in developing countries like India that are committed to poverty alleviation."

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10.04.2018

# Media

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Missoulian: Playing God: University of Montana thinker asks if we're ready

With Christopher Preston.

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10.04.2018

# Media

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Reuters: Rules to govern sun-dimming technology "urgently" needed - expert

"Large-scale use of sun-dimming technology could have a range of little-understood side effects, including potentially shifting Asian monsoons"

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09.04.2018

# New Publications

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Kriegler, Elmar; et al. (2018): Pathways limiting warming to 1.5°C. A tale of turning around in no time?

Kriegler, Elmar; Luderer, Gunnar; Bauer, Nico; Baumstark, Lavinia; Fujimori, Shinichiro; Popp, Alexander et al. (2018): Pathways limiting warming to 1.5°C. A tale of turning around in no time? In Philos Trans A Math Phys Eng Sci 376 (2119). DOI: 10.1098/rsta.2016.0457.

"We explore the feasibility of limiting global warming to 1.5°C without overshoot and without the deployment of carbon dioxide removal (CDR) technologies. For this purpose, we perform a sensitivity analysis of four generic emissions reduction measures to identify a lower bound on future CO2 emissions from fossil fuel combustion and industrial processes. Final energy demand reductions and electrification of energy end uses as well as decarbonization of electricity and non-electric energy supply are all considered. We find the lower bound of cumulative fossil fuel and industry CO2 emissions to be 570 GtCO2 for the period 2016–2100, around 250 GtCO2 lower than the lower end of available 1.5°C mitigation pathways generated with integrated assessment models."

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