General considerations for experimental research on ocean alkalinity enhancement
State of the Planet, 2023 Abstract. Ocean alkalinity enhancement (OAE) is proposed as an approach to capture carbon by adding alkaline substances to seawater to enhance the ocean's natural carbon sink. These substances include minerals, such as olivine, or artificial substances, such as lime or some industrial byproducts.
Dupont, Sam, Metian, Marc
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Resilience of Phytoplankton and Microzooplankton Communities under Ocean Alkalinity Enhancement in the Oligotrophic Ocean. [PDF]
Environ Sci TechnolOcean alkalinity enhancement (OAE) is currently discussed as a potential negative emission technology to sequester atmospheric carbon dioxide in seawater. Yet, its potential risks or cobenefits for marine ecosystems are still mostly unknown, thus hampering its evaluation for large-scale application.
Xin X +5 more
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Alkalinity biases in CMIP6 Earth system models and implications for simulated CO2 drawdown via artificial alkalinity enhancement [PDF]
Biogeosciences, 2023 The partitioning of CO2 between atmosphere and ocean depends to a large degree not only on the amount of dissolved inorganic carbon (DIC) but also on alkalinity in the surface ocean. That is also why ocean alkalinity enhancement (OAE) is discussed as one
C. Hinrichs +4 more
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Variability of alkalinity and the alkalinity-salinity relationship in the tropical and subtropical surface ocean [PDF]
, 2014 The variability of total alkalinity (TA) and its relationship with salinity in the tropical and subtropical surface ocean were examined using data collected in various marine environments from a ship of opportunity.
Toby Tyrrell +9 more
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Field experiments in ocean alkalinity enhancement research
State of the Planet, 2023 Abstract. This chapter focuses on considerations for conducting open-system field experiments in the context of ocean alkalinity enhancement (OAE) research. By conducting experiments in real-world marine and coastal systems, researchers can gain valuable insights into ecological dynamics; biogeochemical cycles; and the safety, efficacy, and scalability
Tyler Cyronak +2 more
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Laboratory experiments in ocean alkalinity enhancement research
State of the Planet, 2023 Abstract. Recent concern about the consequences of continuing increases in atmospheric CO2 as a key heat-trapping agent (USGCRP, 2017; IPCC, 2021) have prompted ocean experts to come together to discuss how to provide science-based solutions. Ocean alkalinity enhancement (OAE) is being considered not only as a ocean carbon dioxide removal (CDR ...
Maria D. Iglesias-Rodríguez +3 more
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Microbial ecosystem responses to alkalinity enhancement in the North Atlantic Subtropical Gyre
Frontiers in Climate, 2022 In addition to reducing carbon dioxide (CO2) emissions, actively removing CO2 from the atmosphere is widely considered necessary to keep global warming well below 2°C.
Adam V. Subhas +6 more
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Removing Carbon Dioxide Through Ocean Alkalinity Enhancement and Seaweed Cultivation: Legal Challenges and Opportunities [PDF]
, 2021 This paper explores two ocean-based carbon dioxide removal strategies – ocean alkalinity enhancement and seaweed cultivation. Ocean alkalinity enhancement involves adding alkalinity to ocean waters, either by discharging alkaline rocks or through an ...
Silverman-Roati, Korey G. +4 more
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Subsurface dissolution reduces the efficiency of mineral-based open-ocean alkalinity enhancement [PDF]
BiogeosciencesCarbon dioxide removal (CDR) from the atmosphere will likely be required to offset hard-to-abate emissions and limit global warming to well below 2 °C, in line with the Paris Agreement. Among proposed CDR strategies, ocean alkalinity enhancement (OAE) is
F. A. Burger +7 more
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Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
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