Monat: Februar 2023

Peer-reviewed Publications

Boyd et al. (2023): Operational Monitoring of Open-Ocean Carbon Dioxide Removal Deployments: Detection, Attribution, and Determination of Side Effects

Philip W. Boyd, Hervé Claustre, Louis Legendre, Jean-Pierre Gattuso, Pierre-Yves Le Traon IN: Frontiers in Ocean Observing: Emerging Technologies for Understanding and Managing a Changing Ocean. [Eds.] E.S. Kappel, V. Cullen, M.J. Costello, L. Galgani, C. Gordó-Vilaseca, A. Govindarajan, S. Kouhi, C. Lavin, L. McCartin, J.D. Müller, B. Pirenne, T. Tanhua, Q. Zhao, S. Zhao; Oceanography 36 (Supplement 1), https://doi.org/10.5670/oceanog.2023.s1.2.

Considering information from satellites and autonomous platforms combined with artificial intelligence (AI) and models, the authors describe a future operational monitoring system for the detection, attribution, and determination of side effects of open-​ocean mCDR deployments. The authors mainly address the monitoring challenge described in NASEM (2022), based upon the current and expected readiness of observational platforms and sensors.

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Peer-reviewed Publications

Nature – Zhang et al. (2023): Asymmetric response of South Asian summer monsoon rainfall in a carbon dioxide removal scenario

Suquin Zhang, Xio Qu, Gang Huang, Peng Hu IN: npj Clim Atmos Sci 6, 10 (2023). https://doi.org/10.1038/s41612-023-00338-x

The reversibility of South Asian summer monsoon (SASM) precipitation under the CO2 removal scenario is critical for climate mitigation and adaptation. In the idealized CO2 ramp-up (from 284.7 to 1138.8 ppm) and symmetric ramp-down experiments, SASM precipitation is largely reversible while exhibiting strong asymmetry: it may overshoot the unperturbed level when CO2 recovers.

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Science-Policy Documents

Nawaz et al. (2023): Public evaluations of four approaches to ocean-based carbon dioxide removal

Sara Nawaz, Guillaume Peterson St-Laurent, Terre Satterfield IN: Climate Policy, DOI: 10.1080/14693062.2023.2179589

This study explores factors of interest in understanding public views on four marine NETs, both perceptions of climate severity and urgency, and beliefs about marine environments. It uses a quantitative survey to explore how a representative sample of people in British Columbia, Canada and Washington state, United States evaluate four marine NETs: coastal restoration; ocean alkalinity enhancement; ocean fertilization; and offshore direct air carbon capture and storage.

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Peer-reviewed Publications

Jayarathna et al. (2023): Review on direct ocean capture (DOC) technologies

Chameera Jayarathna, Michel Maelum, Sumudu Karunarathne, Sara Andrenacci, Hans Aksel Haugen IN: Proceedings of the 16th Greenhouse Gas Control Technologies Conference (GHGT-16) 23-24 Oct 2022, http://dx.doi.org/10.2139/ssrn.4282969

This article reviews the studies which have been performed on the available technologies for “direct CO2 removal from seawater“, also known as “direct ocean capture (DOC)“. There is a limited number of articles available on DOC technologies with non-biological concepts such as
electrochemical ocean capture (EOC), mineralization, ocean alkalinity enhancement (OAE), etc. This study revealed valuable information on the recent progress of non-biological DOC technologies. There is a clearly visible attention towards the Electrochemical Ocean capture (EOC). Different approaches such as use of bipolar membrane electrodialysis (BPMED), three-chambered electrolytic cation exchange module (E-CEM) and electrochemical hydrogen looping (EHL) system can be highlighted.

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Peer-reviewed Publications

Vajdi & Aslani (2023): Design and techno-economic analysis of direct CO2 capturing with integrated photobioreactors as a building façade

Shaghayegh Vajdi, Alireza Aslani IN: Sustainable Energy Technologies and Assessments 56,103068; https://doi.org/10.1016/j.seta.2023.103068

This research investigates the techno-economic analysis of direct carbon-capturing by microalgae cultivation in photobioreactors integrated into the building façade to produce value-added products. The case study is a commercial building in one of the polluted zones in Tehran. The building facade was designed considering the flat panel photobioreactor with 2 × 1 × 0.05 m3.

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Reports

Report: The Ocean Carbon Dioxide Removal Decision-Making Landscape

Sarah R. Cooley, George H. Leonard, Anna Zivian, Eleanor D. Pierel, on Ocean Conservancy.org, 28 pp.

Ocean carbon dioxide removal (OCDR) research is advancing rapidly as part of a global hunt for effective climate mitigation actions. This report examines 12 interest groups in the U.S. OCDR community, spanning from specialists like academic researchers to general information users in civil society. The authors evaluated public-facing products from each interest group, then conducted semi-structured interviews and informal conversations with interest group members to learn about their interests, activities and concerns. Following the analysis of each interest group, we synthesize the most prominent themes.

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Science-Policy Documents

Powlson & Galdos (2023): Challenging claimed benefits of soil carbon sequestration for mitigating climate change and increasing crop yields: heresy or sober realism?

David S. Powlson, Marcelo V. Galdos IN: Global Change Biology, https://doi.org/10.1111/gcb.16640

The two claims challenged by the authors are: 1. Sequestration of C in agricultural soils can make a substantial contribution to climate change mitigation. 2. Increasing SOC will routinely lead to increased crop yields and contribute to global food security. The authors are particularly critical of these two assertions being combined to make the claim that SOC sequestration is a “win-win” strategy. They point out that climate change and food security have both been described as “wicked problems” of “daunting complexity” so blanket solutions that claim to solve both “should prompt some degree of scepticism.”

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Events

Webinar: Scrubbing the Skies: Certifying Soil Carbon Removals

Tue, March 14, 2023, 1:00 PM – 2:00 PM EDT hosted by Institute for Carbon Removal Law and Policy

In this webinar „Certifying soil carbon removals: A soil-focussed assessment of the proposal for the European Framework for Carbon Removal Certification“, two German-based researchers, Anne Siemons (Öko-Institut) and Hugh McDonald (Ecologic Institute) will introduce and critically assess the EU’s latest carbon removal policy proposal. In particular, they will evaluate whether the policy proposal will lead to high-quality soil carbon removals that are long-lasting, additional, robustly quantified, and sustainable.

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Peer-reviewed Publications

Köhnke et al. (2023): On the path to net-zero: Establishing a multi-level system to support the complex endeavor of reaching national carbon neutrality

Fiona Köhnke, Bettina Steuri, Juliane El Zohbi, Knut Görl, Malgorzata Borchers, Johannes Förster, Daniela Thrän, Nadine Mengis, Andreas Oschlies, Daniela Jacob IN: Front. Clim. 5:1056023. doi: 10.3389/fclim.2023.1056023

Countries are formulating their mitigation efforts in their long-term low greenhouse gas emission development strategies (LT-LEDS). However, there are no standardized specifications for preparing these strategies, which is why the reports published to date differ widely in terms of structure and scope. To consider the multiple facets of reaching net-zero from a systemic perspective as comprehensively as possible, the authors propose the Net-Zero-2050 System.

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