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Session Proposal: Bridging Scales to Advance Ocean-Based Carbon Dioxide Removal (AGU25)

OS006
Bridging Scales to Advance Ocean-Based Carbon Dioxide Removal

Session ID#: 251436

Session Description:
Ocean-based carbon dioxide removal (mCDR) approaches offer scalable opportunities to mitigate climate change while providing potential co-benefits, such as reducing ocean acidification. However, quantifying the mCDR efficacy remains a scientific challenge due to complex environmental interactions occurring across spatial and temporal scales, and across different Earth’s reservoirs (atmosphere, ocean, sediments, and biosphere). This session invites contributions from across the mCDR research community to foster integration among laboratory work, field studies, and modeling efforts. A key goal is to advance the scientific foundation needed for robust monitoring, reporting, and verification (MRV) of mCDR. We welcome abstracts that explore: 1) particle–seawater interactions and mineral dissolution kinetics; 2) results and verification from field experiments; 3) investigation of relevant biogeochemical feedbacks; and 4) modeling efforts across scales. By drawing on diverse tools and perspectives, this session aims to identify critical knowledge gaps, promote collaboration, and support a more integrated understanding of mCDR.
Co-Sponsor(s):
  • B - Biogeosciences
  • GC - Global Environmental Change
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
1635 Oceans [GLOBAL CHANGE]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Primary Convener:  Shihan Li, Texas A&M University College Station, College Station, TX, United States
Conveners:  Devon Cole, Hourglass Climate, Montclair, United States and Mohammed Hashim, University of Southern California, Department of Earth Sciences, Los Angeles, United States
 
Coastal systems for carbon dioxide removal and support of resilient communities (Invited) (1850778)
Mojtaba Fakhraee, University of Connecticut, Groton, United States and Noah Planavsky, Yale University, Department of Earth and Planetary Sciences, New Haven, United States
 
Quantification of CO₂ Removal by Enhanced Rock Weathering Using Acid Mine Drainage and the MRV Requirements: A Case Study of Real-Scale Implementation (1868163)
Ryoya Sato1, Fugo Nakamura1, Monthicha Rawangphai1, Yamamoto Takahiro2, Koushirou Tanaka3, Shoma Yoshii3 and Tsutomu Sato4, (1)Hokkaido University, Graduate school of Engineering, Hokkaido, Japan, (2)PACIFIC CONSULTANTS CO., LTD., Tokyo, Japan, (3)PACIFIC CONSULTANTS CO., LTD., Hokkado, Japan, (4)Hokkaido University, Faculty of Enigineering, Hokkaido, Japan
 
Site Selection Framework for Carbon-Neutral Alkalinity Production for Open-Ocean Carbon Dioxide Removal. (1879169)
Geneva Kirk Drayson1, James A Franke2, Manon Duret3 and David Keith3, (1)University of Chicago, Chicago, IL, United States, (2)University Of Chicago, Department of the Geophysical Sciences, Chicago, United States, (3)University of Chicago, Department of the Geophysical Sciences, Chicago, United States
 
Reversing Coastal Acidification through Estuarine Alkalinity Enhancement: Field Evidence from a Lagoon Trial (1891000)
Yan Zheng1, Mark James Hopwood2, Jianhuai Ye1, Yong Tian1, Zengyi Li1, Baoling Yang1, Ruqin Bai2, Yuxin Liang1, Linqiang Ma1, Shaojie Jiang1, Yuxia Yang1, Xiaoqing Wen1, Xiaobao Tuo1, Jingyu Liu1 and Bin Xu1, (1)Southern University of Science and Technology, School of Environmental Science and Engineering, Shenzhen, China, (2)Southern University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China
 
Determination of Seasonal and Annual Carbon Cycling using Mobile and Stationary Eddy Covariance in San Diego Bay and a Nearshore Coastal Ocean (1901177)
Alyssa Duenas, San Diego State University; University of California, Davis, Department of Biology, San Diego, United States and Walter C Oechel, San Diego State University, Department of Biology, San Diego, United States
 
Ocean iron fertilization trade-off between climate benefits vs. ecological costs (1901932)
Jun Yu1, Jefferson Keith Moore2, Francois Primeau3, Kristen M. Krumhardt4, Michael Levy5, Keith T Lindsay6 and Adam Martiny3, (1)Organization Not Listed, Washington, DC, United States, (2)University of California Irvine, Earth System Science, Irvine, United States, (3)University of California Irvine, Earth System Science, Irvine, CA, United States, (4)NCAR, Boulder, United States, (5)National Center for Atmospheric Research, Climate and Global Dynamics, Boulder, United States, (6)NCAR, Boulder, CO, United States
 
Exploring Ocean Alkalinity Enhancement in the Arctic Ocean (1915047)
Mengyang Zhou, Yale University, New Haven, CT, United States, Mary-Louise Timmermans, Yale University, Department of Earth & Planetary Sciences, New Haven, United States and Elizabeth A Yankovsky, Yale University, New Haven, United States
 
Multi-resolution regional modeling to investigate variability in the carbon uptake efficiency of ocean alkalinity enhancement and implications for prediction (1922232)
Elizabeth A Yankovsky1, Jonathan Cohen1, Abigale Wyatt2, Scott Bachman2, Alicia Karspeck3 and Matthew C Long2, (1)Yale University, New Haven, United States, (2)[C]Worthy, LLC, Boulder, United States, (3)[C]Worthy, Boulder, United States
 
Evaluating Ocean Alkalinity Enhancement Efficiency in the Gulf of Alaska using a Regional Coupled Model (1924634)
Rémi Pagès1, Claudine Hauri1 and Nicholas D Ward2, (1)International Arctic Research Center, Fairbanks, AK, United States, (2)Pacific Northwest National Laboratory, Sequim, United States
 
A Novel Approach to Ocean Alkalinity Enhancement via Ion Exchange Resins (1926645)
Mengshi Liu1, Mohammed Hashim2 and Seth John2, (1)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (2)University of Southern California, Department of Earth Sciences, Los Angeles, United States
 
Numerical assessment of hypothetical large-scale river-based alkalinity modification scenarios in the Northern Gulf Coast (1939168)
Xing Zhou1, Annalisa Bracco1,2, Takamitsu Ito1 and Christopher T. Reinhard3, (1)Georgia Institute of Technology, School of Earth & Atmospheric Sciences, Atlanta, United States, (2)CMCC Foundation - Euro-Mediterranean Center on Climate Change, Milano, Italy, (3)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, United States
 
Increased geologic carbon flux to the ocean alongside seafloor volcanism after the last ice age (1952423)
Patrick A Rafter, University of South Florida Tampa, Tampa, FL, United States, Mathis Hain, University of California Santa Cruz, Santa Cruz, United States, Kaustubh Thirumalai, University of Texas at Austin, Department of Geosciences, Tucson, United States, Elsa Arellano-Torres, Universidad Nacional Autónoma de México, Escuela Nacional de Ciencias de la Tierra, Mexico City, Mexico, Eric Tappa, University of South Carolina, School of the Earth, Ocean, and Environment, Columbia, United States, Timothy J DeVries, University of California Santa Barbara, Earth Research Institute, Santa Barbara, United States, Maria L. Machain-Castillo, Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Mexico City, Mexico, Ingrid L Hendy, University of Michigan Ann Arbor, Earth and Environmental Sciences, Ann Arbor, MI, United States, Juan Carlos Herguera, Center for Scientific Research and Higher Education at Ensenada, Ensenada, BJ, Mexico, Martin Soto-Jimenez, Universidad Nacional Autónoma de México, Mexico City, Mexico, William Robert Gray, Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France, Ryan A. Green, University of California, Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, Frank Pavia, University of Washington, Seattle, United States, James William Buchanan Rae, University of St Andrews, School of Earth & Environmental Sciences, St Andrews, United Kingdom and John Richard Southon, Univ California, Earth System Science, Irvine, United States
 
Global ocean geochemical box model study of seaweed-based carbon dioxide removal (1956573)
Young Ro Yi, Princeton University, High Meadows Environmental Institute, Princeton, NJ, United States, Mathis Hain, University of California, Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, Daniel Mikhail Sigman, Princeton University, Geosciences, Princeton, United States, Haojia Abby Ren, National Taiwan University, Department of Geosciences, Taipei, Taiwan, Brian Von Herzen, Climate Foundation, Woods Hole, MA, United States and Meytal B. Higgins, ExxonMobil Technology and Engineering Company, Annandale, United States
 
Extending the Open-Source Oceananigans Code with Finite-Rate Carbonate Chemistry: Progress Towards Small-Scale Verification of Ocean Alkalinity Enhancement Models (1960053)
Anna Pauls1, Colin Towery2 and Peter Hamlington2, (1)University of Colorado Boulder, Civil Engineering, Boulder, United States, (2)University of Colorado at Boulder, Mechanical Engineering, Boulder, United States
 
Hierarchical Modeling Approaches for Quantification of Marine CO2 Removal Across Scales (1960549)
Scott Bachman1, Alicia Karspeck2 and Matthew C Long1, (1)[C]Worthy, LLC, Boulder, United States, (2)[C]Worthy, Boulder, United States
 
Costs and greenhouse gas implications of seaweed-based carbon removal and conversion pathways (1961979)
Udayan Singh1, Troy Hawkins1, Farah Naaz1, Meytal B. Higgins2, Jingyi Zhang1, Xiaozhou Zhang2 and Yuchen Liu2, (1)Argonne National Laboratory, Lemont, United States, (2)ExxonMobil Technology and Engineering Company, Annandale, United States
 
The Impact of Ocean Alkalinity Enhancement on Globigerinoides ruber Growth and Calcification (1970096)
Laura Haynes1, Jennifer S Fehrenbacher2, Sean Baxter3, Acadia Helfand1, Kathleen Langston4, Emmaline Miller3, Madeleine Reed-Horn4, Arlo Rucker4, Austin Shinzato3, Leocadio Blanco-Bercial5 and Dr. Amy E Maas, PhD5, (1)Vassar College, Earth Science and Geography, Poughkeepsie, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (3)Oregon State University, Corvallis, United States, (4)Vassar College, Poughkeepsie, United States, (5)Bermuda Institute of Ocean Sciences - Arizona State University, Julie Ann Wrigley Global Futures Laboratory, St. George's, Bermuda
 
Development of a coastal ocean modeling framework for quantification of marine CO2 removal through olivine weathering (1970796)
Christopher Mikolaitis1, Dr. Zhilong Liu2, Stephen Romaniello3, Swathy Krishna Manoharan Chennakkattu4, Devon B Cole3, Grace Andrews3 and John C Lehrter5, (1)University of South Alabama, Mobile, AL, United States, (2)Dauphin Island Sea Lab, Dauphin Island, United States, (3)Vesta, PBC, San Francisco, United States, (4)University of South Alabama, Stokes School of Marine and Environmental Sciences, Mobile, AL, United States, (5)University of South Alabama, Stokes School of Marine and Environmental Sciences, Mobile, United States
 
Testing the Waters: Evaluating Direct Ocean Capture Marine CDR from the Lab to the Ocean (1970884)
Sophie N Chu1, Zhiyuan Qi1 and Captura's R&D team, (1)Captura Corporation, Pasadena, United States
 
Leveraging Mangrove Restoration for Durable Carbon Dioxide Removal (1974786)
Nicolas Theunissen1, Toby Bryce2, Gabby Kitch2, Isabella Chiaravalloti3, Mojtaba Fakhraee4, Peter A Raymond2,5 and Noah Planavsky2,3, (1)Yale University, Earth and Planetary Sciences, New Haven, CT, United States, (2)Yale University, Yale Center for Natural Carbon Capture, New Haven, United States, (3)Yale University, Department of Earth and Planetary Sciences, New Haven, United States, (4)University of Connecticut, Groton, United States, (5)Yale University, School of the Environment, New Haven, United States
 
The Role of Geochemical Carbon Dioxide Removal Approaches Under the Sustainability Informed Shared Socioeconomic Pathways (1975247)
Parisa Javadi1,2, Yoga Pratama1, Patrick R O'Rourke3, Jay Fuhrman3, Scott Doney4, William Shobe5, Andres Clarens6 and Elina Brutschin1, (1)IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria, (2)University of Virginia, Department of Civil and Environmental Engineering, Charlottesville, VA, United States, (3)University of Maryland, School of Public Policy, College Park, United States, (4)University of Virginia, Department of Environmental Sciences, Charlottesville, United States, (5)University of Virginia, Weldon Cooper Center for Public Service, Charlottesville, United States, (6)University of Virginia, Department of Civil and Environmental Engineering, Charlottesville, United States
 
Assessing the Impacts of Olivine Dispersal, an Ocean Alkalinity Enhancement Method, on the Buoyancy and Viability of Planktic Foraminifera (1980189)
Jennifer S Fehrenbacher1, Laura Haynes2, Sean Baxter3, Acadia Helfand2, Kathleen Langston4, Emmaline Miller3, Madeleine Reed-Horn4, Arlo Rucker4, Austin Shinzato3, Leocadio Blanco-Bercial5 and Dr. Amy E Maas, PhD5, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (2)Vassar College, Earth Science and Geography, Poughkeepsie, United States, (3)Oregon State University, Corvallis, United States, (4)Vassar College, Poughkeepsie, United States, (5)Bermuda Institute of Ocean Sciences - Arizona State University, Julie Ann Wrigley Global Futures Laboratory, St. George's, Bermuda
 
Biotic Calcification Feedbacks and Their Impact on Marine Carbon Dioxide Removal Additionality in Global Ocean Alkalinity Enhancement Simulations (1981639)
Rui Jin1, Kelly Kearney1, Kristen M. Krumhardt2, Brendan Carter1 and Darren Pilcher1, (1)University of Washington, Cooperative Institute for Climate, Ocean, and Ecosystem Studies, Seattle, United States, (2)NCAR, Boulder, United States
 
Quantifying mCDR for Project Macoma in the Salish Sea: a case study for regional simulations of Ocean Alkalinity Enhancement, upscaling, and implementing impulse response functions. (2003819)
Jesse M Vance, Ebb Carbon, San Francisco, United States and Mallory Ringham, Ebb Carbon, Oceanography, MRV, South San Francisco, United States
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