03.05.2021

# New Publications

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Terhaar, Jens, et al. (2021): Southern Ocean anthropogenic carbon sink constrained by sea surface salinity

Terhaar, Jens; Frölicher, Thomas L.; Joos, Fortunat (2021): Southern Ocean anthropogenic carbon sink constrained by sea surface salinity. In Science Advances 7 (18). DOI: 10.1126/sciadv.abd5964.

"We identify a tight relationship across two multimodel ensembles between present-day sea surface salinity in the subtropical-polar frontal zone and the anthropogenic carbon sink in the Southern Ocean."

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03.05.2021

# Media

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EurekAlert!: Uncertainty of future Southern Ocean CO2 uptake cut in half

"Together with Thomas Frölicher and Fortunat Joos, who are also researchers at the Oeschger Centre, Terhaar has just presented in the scientific journal "Sciences Advances" a new method for constraining the Southern Ocean's CO2 sink."

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08.04.2021

# New Publications

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Caserini, Stefano; et al. (2021): Potential of Maritime Transport for Ocean Liming and Atmospheric CO2 Removal

Caserini, Stefano; Pagano, Dario; Campo, Francesco; Abbà, Antonella; Marco, Serena de; Righi, Davide et al. (2021): Potential of Maritime Transport for Ocean Liming and Atmospheric CO2 Removal. In Front. Clim. 3. DOI: 10.3389/fclim.2021.575900.

"In this study, the potential of discharging calcium hydroxide (slaked lime, SL) using existing maritime transport is evaluated, at the global scale and for the Mediterranean Sea."

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16.02.2021

# Calls & events

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Job: Postdoc Position in Modelling Ocean Alkalinity Enhancement Strategies and Ocean Resilience Patterns from Biodiversity Data (University of Southern Denmark)

Deadline: 15. March 2021

"Aim of the postdoc project is to develop a model based on metagenomic and other biodiversity-related and biogeochemical datasets to establish the relationship between ocean alkalinity and diversity patterns, and to explore where protective strategies, especially ocean alkalinity enhancement, make sense to apply."

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25.01.2021

# Media

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Our Shared Seas: A Primer for Philanthropy on Ocean-Climate Interventions

"One useful categorization of ocean-climate efforts divides interventions into three areas: the mitigation of future greenhouse gas emissions, the accelerated sequestration of atmospheric CO2, and adaptation efforts to help vulnerable habitats and communities adapt to the stresses of climate change."

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10.12.2020

# New Publications

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Köhler, Peter (2020): Anthropogenic CO2 of High Emission Scenario Compensated After 3500 Years of Ocean Alkalinization With an Annually Constant Dissolution of 5 Pg of Olivine

Köhler, Peter (2020): Anthropogenic CO2 of High Emission Scenario Compensated After 3500 Years of Ocean Alkalinization With an Annually Constant Dissolution of 5 Pg of Olivine. In Front. Clim. 2. DOI: 10.3389/fclim.2020.575744.

"I here analyze ocean alkalinization in a high CO2 world (emission scenario SSP5-85-EXT++ and CDR-ocean-alk within CDRMIP) for the next millennia using a revised version of the carbon cycle model BICYCLE, whose long-term feedbacks are calculated for the next 1 million years."

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03.12.2020

# New Publications

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Bertram, Christine; Merk, Christine (2020): Public perceptions of ocean-based carbon dioxide removal technologies: the nature - engineering divide

Bertram, Christine; Merk, Christine (2020): Public perceptions of ocean-based carbon dioxide removal technologies: the nature - engineering divide. In Front. Clim. 2, p. 31. DOI: 10.3389/fclim.2020.594194.

"We outline past work on the public perceptions and acceptability of ocean-based CDR among laypersons covering the main developments over the past 15 years. We compare and synthesize insights from two distinct strands of literature – one on climate engineering approaches and the other on coastal ecosystem management or blue carbon approaches."

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11.11.2020

# Political Papers

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Rackley, Steve (2020): Ocean Alkalinity Enhancement. A preliminary research agenda and maturation roadmap

Rackley, Steve (2020): Ocean Alkalinity Enhancement. A preliminary research agenda and maturation roadmap. CarbonActionNow!

"This working paper follows the NASEM approach in establishing a preliminary research agenda for ocean alkalinity enhancement (OAE), and also outlines a technology maturation roadmap towards large-scale deployment. The two-fold aim of this work is, firstly, to focus R&D attention on knowledge gaps that must be closed to enable informed decisions on OAE demonstration and later deployment activity and, secondly, to identify the potential longer term, primarily non-technical barriers to impact scale OAE deployment that need to be addressed, in parallel with other early stage work, in order to provide the foundation for such deployment, if this is eventually undertaken."

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12.10.2020

# Media

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World Resources Institute: Leveraging the Ocean's Carbon Removal Potential

"As the need for climate action becomes more urgent, the ocean is gaining attention as a potential part of the solution. Approaches like investing in offshore energy production, conserving coastal ecosystems and increasing consumption of sustainable ocean-based protein offer opportunities to reduce emissions. In addition to these opportunities, a range of ocean-based carbon removal approaches could help capture and store billion of tons of carbon."

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08.09.2020

# Media

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New Scientist: Silicon Valley billionaires want to geoengineer the world's oceans

"Should billionaires be able to start tinkering with the climate without asking the rest of us?"

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