Category: New Publications

New Publications

Sands et al. (2023): Perspective – The Growing Potential of Antarctic Blue Carbon

Chester J. Sands, Nadescha Zwerschke, Narissa Bax, David K.A. Barnes, Camille Moreau, Rachel Downey, Bernabé Moreno, Christoph Held, Maria Paulsen 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.s1.5

In this perspective article, the Antarctic blue carbon is discussed: Antarctic blue carbon potential is one of many understudied carbon removal pathways. Full understanding of the geography and magnitude of carbon sequestration is required to enable placing an appropriate value on the
services nature can provide if adequately safeguarded. Investment in gaining this knowledge (to help prioritize protection and meaningful monitoring) would cost only a fraction of that for commercial carbon capture and sequestration, and a fraction of the ultimate value of the carbon sequestered on the Antarctic continental shelf.

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New Publications

Waite et al. (2023): Perspective Net Zero – Actions for an Ocean-Climate Solution

Anya Waite, Mike Smit, Eric Siegel, Greg Hanna , Sara Leslie 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.s1.6

A vision is needed for development of the world’s first international climate observatory that would record carbon and heat fluxes from the seafloor to the atmosphere. This initiative would require leading nations to communicate, pool, and coordinate their already substantial investments in observing infrastructure, and their expertise in the areas of science, policy, and innovation, to create information streams that would benefit all participants involved, along with the rest of the world.

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New Publications

Bresnanhan et al. (2023): A Low-Cost Carbon Dioxide Monitoring System for Coastal and Estuarine Sensor Networks

Philip J. Bresnahan, Elizabeth Farquhar, Daniel Portelli, Michael Tydings, Taylor Wirth, Todd Martz 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.s1.4

As the interest in marine or ocean-based carbon dioxide removal (mCDR) increases, so does the need for more spatially resolved measurement, reporting, and verification (MRV) of the CO2 sequestered (and for understanding the impacts of these environmental manipulation experiments). Here the authors describe our efforts toward a low-cost CO2 flux or ∆pCO2 (the difference between air and water partial pressure of CO2) monitoring system intended for use in distributed sensor arrays in coastal, estuarine, and blue carbon research and in mCDR approaches.

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New Publications

Gracia et al. (2023): Assessing Changes in Marine Biogeochemical Processes Leading to Carbon Dioxide Removal with Autonomous Underwater Vehicles

Catherine Garcia, Benedetto Barone, Sara Ferrón, David Karl 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.s1.3

Autonomous underwater vehicles (Seagliders) have been deployed from ships in the vicinity of Station ALOHA for more than 16 missions since 2008. Seagliders can be used to characterize the variability of primary production, respiration, and particle dynamics to illuminate their relationship with high-productivity events. These events can serve as a framework for monitoring the short-term evolution of a water patch following “boom” and “bust” phases similar to that predicted during open ocean CDR experiments.

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New Publications

Kuru et al. (2023): Solid sorbent direct air capture using geothermal energy resources (S-DAC-GT) – Region specific analysis

Timur Kuru, Keivan Khaleghi, Silviu Livescu IN: Geoenergy Sciense Engineering 224, 211645, https://doi.org/10.1016/j.geoen.2023.211645

This paper reviews the potential use of low temperature geothermal resources for thermal energy necessary for CO2 direct air capture (DAC) processes (geothermal DAC or S-DAC-GT). The paper includes a literature review of DAC processes and exiting techno-economic analyses on the subject. It also provides a list of global geothermal resources, maps, and databases that would be useful in finding areas of high favorability for S-DAC-GT deployment across the world.Finally, it concludes with a techno-economic analysis of four specific regions within the United States and one European region that may potentially be attractive S-DAC-GT sites.

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New Publications

Lammers et al. (2023): Electrolytic Sulfuric Acid Production with Carbon Mineralization for Permanent Carbon Dioxide Removal

Laura N. Lammers, Yanghua Duan, Luis Anaya, Ayumi Koishi, Romario Lopez, Roxanna Delima, David Jassby, David L. Sedlak IN: ACS Sustainable Chem. Eng.; doi.org/10.1021/acssuschemeng.2c07441

Here, a scalable CDR and mineralization process is reported in which water electrolysis is used to produce sulfuric acid for accelerated weathering, while a base is used to permanently sequester CO2 from air into carbonate minerals. The process can be integrated into existing extractive processes by reacting produced sulfuric acid with critical element feedstocks that neutralize acidity (e.g., rock phosphorus or ultramafic rock mine tailings), with calcium- and magnesium-bearing sulfate wastes electrolytically upcycled.

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New Publications

Science – Levin et al. (2023): Deep-sea impacts of climate interventions

Lisa A. Levin , Joan M. Alfaro-Lucas, Ana Colaço, Erik E. Cordes, Neil Craik, Roberto Danovaro, Henk-Jan Hoving, Jeroen Ingels, Nélia C. Mestre, Sarah Seabrook, Andrew R. Thurber, Chris Vivian, Moriaki Yasuhara IN: Science 379 (6636), pp. 978-98; (limited access)

Efforts to develop ocean-based climate interventions (OBCIs) to remove and sequester carbon dioxide (CO2), manage solar radiation, or produce renewable energy have accelerated. Questions have been raised about OBCI costs, governance, impacts, and effectiveness at scale, but limited attention has been given to ocean biogeochemistry and ecosystems and particularly to impacts on deepsea ecosystems (>200-m water depth), an ocean region that is understudied but fundamental for Earth’s healthy function. Here the authors discuss OBCIs that could affect deep-ocean ecosystems and their services, identify governance challenges, and highlight the need for an integrated research framework to help centralize consideration of deep-sea impacts in mitigation planning.

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New Publications

Nature – Valentine et al. (2023): Climate-driven tradeoffs between landscape connectivity and the maintenance of the coastal carbon sink

Kendall Valentine, Ellen R. Herbert, David C. Walters, Yaping Chen, Alexander J. Smith, Matthew L. Kirwan IN: Nat Commun 14, 113; https://doi.org/10.1038/s41467-023-36803-7

The authors couple a spatially-explicit geomorphic model with a point-based carbon accumulation model, and show that landscape connectivity, in-situ carbon accumulation rates, and the size of the landscape-scale coastal carbon stock all peak at intermediate sea level rise rates despite divergent responses of individual components. Progressive loss of forest biomass under increasing sea level rise leads to a shift from a system dominated by forest biomass carbon towards one dominated by marsh soil carbon that is maintained by substantial recycling of organic carbon between marshes and bays.

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New Publications

Tan & Kuebbing (2023): A synthesis of the effect of regenerative agriculture on soil carbon sequestration in Southeast Asian croplands

Stanley S.X. Tan, Sara E. Kuebbing IN: Agriculture, Ecosystems & Environment 349, 108450, https://doi.org/10.1016/j.agee.2023.108450

The authors reviewed 92 empirical studies that investigated the effects of 17 regenerative farming practices across 11 broad categories of crops on SOC stock or content in Southeast Asia. Their synthesis found supporting evidence for the use of organic amendments like biochar, compost, and manure, as well as cover cropping, crop rotation, and conservation tillage to increase SOC. 

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New Publications

Gao et al. (2023): Enhanced Silicate Rock Weathering—A New Path of “Carbon Neutrality”

Weibin Gao, Yang Chen, Haoxian Wang IN: Advances in Earth Science 38 (2), pp. 137-150; doi: 10.11867/j.issn.1001-8166.2022.093

The calculation results show that China can remove 0.13~0.80 Gt CO2 through ERW annually, which is conducive to the realization of the “carbon neutrality” goal. Combining the progress of domestic and international research, the main application effects and influencing factors of ERW are summarized, the potential of ERW application in China is analyzed, and the main issues facing ERW application in China are discussed from five aspects: technology, economy, safety, society, and policy. In view of the focus and shortcomings of the current research, the calculation of ERW carbon sequestration, potential hazards of application, and other key concerns and challenges are presented.

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