11.08.2017

# Media

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EOS: Preventing Climate Change by Increasing Ocean Alkalinity

"A recent paper in Reviews of Geophysics discussed increasing ocean alkalinity as an alternative method of carbon sequestration in response to climate change."

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18.07.2016

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Yale environment 360: How Growing Sea Plants Can Help Slow Ocean Acidification

"Researchers are finding that kelp, eelgrass, and other vegetation can effectively absorb CO2 and reduce acidity in the ocean. Growing these plants in local waters, scientists say, could help mitigate the damaging impacts of acidification on marine life."

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30.05.2016

# New Publications

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González, Miriam Ferrer; Ilyina, Tatiana (2016): Impacts of artificial ocean alkalinization on the carbon cycle and climate in Earth system simulations

González, Miriam Ferrer; Ilyina, Tatiana (2016): Impacts of artificial ocean alkalinization on the carbon cycle and climate in Earth system simulations. In Geophys. Res. Lett. DOI 10.1002/2016GL068576.

"Using the state-of-the-art emissions-driven Max-Planck-Institute Earth system model, we explore the impacts of artificial ocean alkalinization (AOA) with a scenario based on the Representative Concentration Pathway (RCP) framework. Addition of 114 Pmol of alkalinity to the surface ocean stabilizes atmospheric CO2 concentration to RCP4.5 levels under RCP8.5 emissions."

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11.05.2016

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New Scientist: Adding rocks to oceans could de-acidify water and save coral

"As a potential solution, Francesc Montserrat of the Royal Netherlands Institute for Sea Research and his colleagues are exploring whether a natural mineral can mop up unwanted acid in seawater. “We’re trying to put some numbers on the table so that if politicians decide that we need to do this in 10 to 15 years’ time, the research is there and we can say, ‘here are the problems you might be dealing with’,” he says."

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03.08.2015

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the guardian: Stop burning fossil fuels now: there is no CO2 'technofix', scientists warn

Media response to Mathesius, Sabine; et al. (2015). "Researchers have demonstrated that even if a geoengineering solution to CO2 emissions could be found, it wouldn’t be enough to save the oceans."

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03.08.2015

# New Publications

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Mathesius, Sabine; et al. (2015): Long-term response of oceans to CO2 removal from the atmosphere

Mathesius, Sabine; Hofmann, Matthias; Caldeira, Ken; Schellnhuber, Hans Joachim (2015): Long-term response of oceans to CO2 removal from the atmosphere. In Nature Climate change. DOI 10.1038/nclimate2729.

"To assess the extent to which CDR might eliminate the long-term consequences of anthropogenic CO2 emissions in the marine environment, we simulate the effect of two massive CDR interventions with CO2 extraction rates of 5 GtC yr−1 and 25 GtC yr−1, respectively, while CO2 emissions follow the extended RCP8.5 pathway."

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26.05.2015

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Phys.org: Climate engineering may save coral reefs, research shows

Media responses to Kwiatkowski, Lester; et al. (2015). "Geoengineering of the climate may be the only way to save coral reefs from mass bleaching, according to new research."

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26.05.2015

# New Publications

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Kwiatkowski, Lester; et al. (2015): Coral bleaching under unconventional scenarios of climate warming and ocean acidification

Kwiatkowski, Lester; Cox, Peter; Halloran, Paul R.; Mumby, Peter J.; Wiltshire, Andy J. (2015): Coral bleaching under unconventional scenarios of climate warming and ocean acidification. In Nature Climate change. DOI 10.1038/nclimate2655.

"Here we analyse the potential for geoengineering, through stratospheric aerosol-based solar radiation management (SRM), to reduce the extent of global coral bleaching relative to ambitious climate mitigation. Exploring the common criticism of geoengineering—that ocean acidification and its impacts will continue unabated—we focus on the sensitivity of results to the aragonite saturation state dependence of bleaching."

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24.04.2015

# New Publications

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Ilyina, Tatiana (2015): The Combined Effects of Changes in Ocean Chemistry, Biology, and Hydrodynamics on Alkalinity

Ilyina, Tatiana (2015): The Combined Effects of Changes in Ocean Chemistry, Biology, and Hydrodynamics on Alkalinity. In Nova Acta Leopoldina 121 (408), pp. 107–110.

"Therefore, understanding the spatiotemporal distribution of TA changes is critical to grasp the oceanic capacity to uptake and store carbon. Furthermore, dissolution of CO2 in seawater does not change TA, but may affect processes controlling its cycling. Hence, it is also interesting to study TA in the context of climate change, i. e. in a rising CO2 ocean."

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24.04.2015

# New Publications

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Ferrer-Gonzalez, Miriam; Ilyina, Tatiana (2015): Mitigation Potential, Risks, and Side-Effects of Ocean Alkalinity Enhancement

Ferrer-Gonzalez, Miriam; Ilyina, Tatiana (2015): Mitigation Potential, Risks, and Side-Effects of Ocean Alkalinity Enhancement. In Nova Acta Leopoldina 121 (408), pp. 275–278.

"The novelty of our research relies on the fact that none of previous studies have addressed this topic with a fully coupled Earth system model of such a level of complexity. Fully coupled set-ups (versus box-models or forced subsystems) hold the potential of revealing new features within the Earth system dynamics."

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