Results 41 to 50 of about 344 (143)

Limits and CO₂ equilibration of near-coast alkalinity enhancement [PDF]

Biogeosciences, 2023
Ocean alkalinity enhancement (OAE) has recently gained attention as a potential method for carbon dioxide removal (CDR) at gigatonne (Gt) scale, with near-coast OAE operations being economically favorable due to proximity to mineral and energy sources ...
J. He, M. D. Tyka
doaj   +1 more source

Assessing the influence of ocean alkalinity enhancement on a coastal phytoplankton community [PDF]

Biogeosciences, 2022
Ocean alkalinity enhancement (OAE) is a proposed method to counteract climate change by increasing the alkalinity of the surface ocean and thus the chemical storage capacity of seawater for atmospheric CO2.
A. Ferderer, Z. Chase, F. Kennedy, K. G. Schulz, L. T. Bach   +4 more
doaj   +1 more source

Assessing the Impacts of Simulated Ocean Alkalinity Enhancement on Viability and Growth of Cultures of Near-Shore Species of Phytoplankton

, 2023
Over the past 250 years, atmospheric carbon dioxide concentrations have risen steadily from 277 ppm to 405 ppm, leading to the exacerbation of the effects of climate change.
Oberlander, Jessica
core  

Ocean alkalinity enhancement in an estuary

Frontiers in Climate
A high-resolution numerical ocean model is used to assess ocean alkalinity enhancement (OAE) in the San Francisco Bay (SFB) estuary. A novel tracer-based approach is introduced to simulate alkalinity release and the subsequent CO2 ingassing. The model is
Minna Ho, Minna Ho, Jeroen Molemaker, Pierre Damien, Matthew C. Long, Daniele Bianchi, James C. McWilliams   +6 more
doaj   +1 more source

Interactions between ocean alkalinity enhancement and phytoplankton in an Earth system model [PDF]

Biogeosciences
The functioning and efficiency of ocean alkalinity enhancement (OAE) as a CO2 removal strategy is well investigated in model studies, but risks for the ecosystem are presently not considered in models.
M. Seifert, C. Danek, C. Völker, J. Hauck, J. Hauck   +4 more
doaj   +1 more source

A numerical assessment of ocean alkalinity enhancement efficiency on a river-dominated continental shelf—a case study in the northern Gulf of Mexico

Environmental Research Letters
A robust high-resolution coupled hydrodynamic-biogeochemical model was applied to the northern Gulf of Mexico to assess the efficiency of river- and ocean-sourced ocean alkalinity enhancement (OAE).
Yanda Ou, Z George Xue, Xinping Hu
doaj   +1 more source

Economic Assessment of Ocean Alkalinity Enhancement Through Electrodialysis: The Role of Carbon Credits in Comparing Solar Energy and Thermal Waste Technologies

Advanced Sustainable Systems, Volume 10, Issue 6, June 2026.
This study evaluates the economic feasibility of an Ocean Alkalinity Enhancement (OAE) plant with an annual CO2 removal capacity of 878 tonnes. The project is profitable only under scenarios with high carbon credit prices, while medium and low‐price scenarios yield a negative net present value.
Idiano D'Adamo, Gabriele Graziano, Francesco Ferella   +2 more
wiley   +1 more source

On the Efficiency and Durability of Purposefully Sinking Seaweed Biomass as a Marine Carbon Dioxide Removal Strategy

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract Large‐scale farming and purposeful sinking of seaweed has been suggested as a marine Carbon Dioxide Removal (mCDR) strategy. Farmed seaweed uptakes dissolved inorganic carbon (DIC) from the mixed layer, resulting in a CO2 deficit that causes an influx of atmospheric CO2 into the surface ocean.
Michaela Sten, Kana Yamamoto, Tim DeVries, Sebastian J. E. Krause, David A. Siegel   +4 more
wiley   +1 more source

Evaluating ocean alkalinity enhancement as a carbon dioxide removal strategy in the North Sea [PDF]

Biogeosciences
Ocean alkalinity enhancement (OAE) is a climate mitigation strategy aimed at increasing the ocean's capacity to absorb and store atmospheric CO2. The effect of OAE depends significantly on local physical and biogeochemical conditions, underscoring the ...
F. Liu, U. Daewel, J. Kossack, K. T. Demir, H. Thomas, H. Thomas, C. Schrum, C. Schrum   +7 more
doaj   +1 more source

Contrasting carbon dioxide removal potential and nutrient feedbacks of simulated ocean alkalinity enhancement and macroalgae afforestation

Environmental Research Letters, 2023
Alongside cuts to emissions, hundreds of gigatons of carbon dioxide removal (CDR) are likely to be required to limit global warming to below 1.5 °C or 2 °C this century.
Lester Kwiatkowski, Manon Berger, Laurent Bopp, Stéphane Doléac, David T Ho   +4 more
doaj   +1 more source