Tag: ocean-based CDR

Report: Report on a sustainable development goals framework for ocean-based NET evaluation

David P. Keller and Wilfried Rickels, GEOMAR, January 2024

This report describes a CDR SDG assessment framework that was developed for future use in evaluating the sustainability of different ocean-based CDR options or portfolios. The assessment methodology describes how the user should first collect relevant information about the CDR approach(es) and then match it to the corresponding SDG indicators or sub-indicators. After that the user must transform (normalize) the derived indicator data for comparability. Then, the user must follow several steps of weighting, aggregation, and evaluation that follow an SDG structured nesting approach. In the end the methodology allows the user to quantify CDR impacts on progress towards attaining overall “sustainability”. No application of the framework was done as part of this task, but should be done in future research endeavors.


Webinar: MRV for Ocean-Based CDR: Spotlight on CDR Suppliers

Thursday, November 30, 7 – 8pm CET

Join Ocean Visions for the second webinar in their series on current innovations in measurement, reporting, and verification (MRV) for ocean-based carbon dioxide removal (CDR). They will spotlight leading startups doing electrochemical CDR to get a deeper understanding of the current state of MRV science, how it’s being applied, and the challenges and solutions advancing this important field. Talks by CDR scientists Erika La Plante, PhD (Equatic) and Sophie Chu, PhD (Captura) will be followed by a moderated audience Q&A.


Klimaretter Ozean? Wie das Meer (noch) mehr Kohlendioxid aufnehmen soll

Heute ist der achte World Ocean Review (WOR Nr. 8) „Klimaretter Ozean? Wie das Meer (noch) mehr Kohlendioxid aufnehmen soll“ erschienen! Der WOR erläutert die Rolle des Ozeans im Kohlenstoffkreislauf der Erde und stellt Vorteile, Risiken und Wissenslücken zu den wichtigsten meeresbasierten Verfahren zur Kohlendioxid-Entnahme (mCDR) vor.

Dieser WOR sowie andere vorherige Ausgaben können kostenlos bestellt und heruntergeladen werden. Er erscheint alle zwei Jahre in deutscher und englischer Sprache und wird weltweit von Interessierten aus Politik, Wirtschaft und Zivilgesellschaft gelesen. Er liefert aktuelles Hintergrundwissen zu relevanten Meeresthemen und richtet sich an alle, die in Sachen Meeresschutz und -nutzung mitreden wollen. Herausgeber ist die maribus gGmbH.


Policy Brief: Blue Carbon: Challenges and opportunities to mitigate the climate and biodiversity crises

European Marine Board, marineboard.eu, November 2023

Blue Carbon ecosystems are a Nature-based Solution that can help mitigate the climate and biodiversity crises, while stabilising livelihoods, protecting coasts, and supporting other societal needs such as food security from the Ocean. EMB Policy Brief No. 11 describes different types and benefits of Blue Carbon ecosystems, and discusses uncertainties and challenges for the conservation and restoration of Blue Carbon ecosystems as a climate change solution. The document also highlights the wider role of the Ocean in mitigating climate change through the carbon cycle, and closes with key research and management recommendations.


Science Communication Training on Ocean Carbon Dioxide Removal

Session 1: February 1-2, 2024, 1-4 pm ET; Session 2: February 18, 9 am-5 pm CT

Session 1: Virtual; Session 2: New Orleans, LA (in conjunction with the 2024 Ocean Sciences Meeting)

COMPASS announced a two-part workshop series in conjunction with the 2024 Ocean Sciences Meeting, held in New Orleans in February 2024. Designed for physical and social scientists and technical experts working in the ocean carbon dioxide removal (oCDR) space, these workshops will help participants share their work and insights on ocean carbon dioxide removal in clear, relevant terms. Grounded in the latest research on science communication, COMPASS workshops are designed to help participants find the relevance of their science for the audiences they most want to reach—journalists, policymakers, the public, and even other scientists. In this two-part workshop series, participants will have the opportunity to engage with top-notch science journalists who will share insights on how scientists can become excellent communicators and provide 1:1 feedback on participants’ communication messages.


Kwiatkowski et al. (2023): Contrasting carbon dioxide removal potential and nutrient feedbacks of simulated ocean alkalinity enhancement and macroalgae afforestation

Lester Kwiatkowski, Manon Berger, Laurent Bopp, Stephane. Doleac, David T. Ho IN: Environmental Research Letters, DOI10.1088/1748-9326/ad08f9

Ocean alkalinity enhancement (OAE) and macroalgae afforestation have received considerable attention within the portfolio of potential CDR options, but their efficacy and constraints remain uncertain. Here the authors compare the CDR potential and biogeochemical impacts of OAE and macroalgae afforestation in exclusive economic zones (EEZs) using a global high-resolution ocean biogeochemical model.


A Code of Conduct for Marine Carbon Dioxide Removal Research

Miranda Boettcher, Fei Chai, Michael Conathan, Sarah Cooley, David Keller, Sonja Klinsky, Javier Lezaun, Phil Renforth, Michelle Scobie, Romany M. Webb; The Aspen Institute, Energy and Environment Program; 49 pp., November 2023

The mCDR Code of Conduct was created by a group of nine interdisciplinary authors convened by Aspen EEP, following up on a project they completed in December 2021. The code provides a roadmap of processes, procedures, and activities that project leaders should follow to ensure that decisions regarding whether, when, where, and how to conduct mCDR research are informed by relevant ethical, scientific, economic, environmental, and regulatory considerations. 


Equinor and Captura To Scale Innovative Ocean CO2 Removal

by Sasha Ranevska, carbonherald.com, November 1

“The multinational energy company Equinor and the direct ocean capture (DOC) company Captura have announced a partnership to develop industrial-scale solutions to remove carbon dioxide from the ocean. The two companies hope that this collaboration could potentially be a starting point for building large-scale commercial plants in key regions globally.”


[Preprint] Marín-Samper et al.: Assessing the impact of CO2 equilibrated ocean alkalinity enhancement on microbial metabolic rates in an oligotrophic system

Laura Marín-Samper, Javier Arístegui, Nauzet Hernández-Hernández, Joaquín Ortiz, Steve D. Archer, Andrea Ludwig, Ulf Riebesell IN: EGUsphere [preprint], https://doi.org/10.5194/egusphere-2023-2409, 2023.

Ocean Alkalinity Enhancement (OAE) is a Negative Emissions Technology (NET) that shows significant potential for climate change mitigation. By increasing the bicarbonate ion concentration in ocean water, OAE could enhance long-term carbon storage and mitigate ocean acidification. However, the side effects and/or potential co-benefits of OAE on natural planktonic communities remain poorly understood. To address this knowledge gap, a mesocosm experiment was conducted in the oligotrophic waters of Gran Canaria.