The deadline to submit a session, town hall, or pre-conference workshop proposal for AGU25 has passed. Please search for and review proposed sessions below. Please note this site is frozen as of 4/29/25 and will not reflect any changes to proposals made after this date.


Conveners will be contacted by the AGU25 Program Committee with any requests for mergers or edits to proposals. Conveners will be notified of the acceptance of their proposal in mid-June.


Abstract submissions will also open in mid-June and the deadline for abstract submissions is 30 July, 2025.


Please visit the AGU25 website for more information or please contact AGU with any questions.

Session Proposal: Carbon Dioxide Removal at scale: Science, technology, policy, and market (AGU25)

GC028
Carbon Dioxide Removal at scale: Science, technology, policy, and market

Session ID#: 247503

Session Description:
To meet the Paris climate goals, CO2 will need to be removed from the atmosphere at rates of up to 10GtCO2/y. The nascent field of Carbon Dioxide Removal (CDR) encompasses nature-based, technological, or hybrid solutions. For example, utilizing and storing biomass or modifying ocean alkalinity can lead to increase in carbon sinks. Some traditional natural solutions may scale quickly, but limited by land availability and risk of reversal, i.e., a ‘durability problem’. But some methods are more reliable than others. Technology-based solutions hold promise, but are slow at scale-up to climate relevant volumes. Also needed are hybrid technology-enhanced natural solutions, involving major management interventions. This session solicits contributions on everything CDR, including 1) new scientific and technical advancement, 2)  monitoring, verification, and reporting (MRV), 3) critical assessment and synthesis of CDR technologies, 4) impact of large-scale CDR deployment on the Earth system and society, and 5) policy and market implications.
Co-Sponsor(s):
  • A - Atmospheric Sciences
  • B - Biogeosciences
  • OS - Ocean Sciences
  • SY - Science and Society
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
6620 Science policy [POLICY SCIENCES & PUBLIC ISSUES]
Primary Convener:  Ning Zeng, University of Maryland College Park, College Park, MD, United States
Conveners:  Dr. Jessica N Cross, PhD, Pacific Northwest National Laboratory, Richland, WA, United States, David John Beerling, University of Sheffield, Leverhulme Centre for Climate Change Mitigation; School of Biosciences, Sheffield, S10, United Kingdom and Dawson Fairbanks, University of Arizona, Department of Soil, Water and Environmental Science, Tucson, AZ, United States
 
Contrasting Reactivity of Ca2+ and Mg2+ in Olivine for Carbon Dioxide Removal (1845669)
Zihua Shao1, Yunfeng Liang1,2, Gyuhwan Jo2, Keisuke Nakamura2 and Takeshi Tsuji1, (1)The University of Tokyo, Tokyo, Japan, (2)ENEOS Xplora Inc., Tokyo, Japan
 
Title: Carbon Casting for Durable Carbon Removal: A Scalable, Low-Energy Approach Using Biomass Residues (1845758)
Ryan Geygan, Graphyte, Washington, United States, Hannah Murnen, Graphyte, Berkely, United States and Harry Deckman, Graphyte, Clinton Township, United States
 
Advancing Greenhouse Gas Accounting in Regenerative Agriculture: Evaluating the Benefits of Tier 3 Process-Based Modeling (1850120)
Haixin Chen1, Yuanpei (Kean) Gao1, Beth Ziniti1, Curtis Dinneen Jones1, Joanna Rogerson2, Scott Herlihy3, Lucas Mateo Perrone4, Channing Ko-Madden5, Gayathri Gopalakrishnan6 and William Salas6, (1)Regrow Ag, Durham, United States, (2)Regrow Ag, Austin, United States, (3)Regrow Ag, Amsterdam, Netherlands, (4)Regrow Ag, Valencia, Spain, (5)Regrow Ag, Baltimore, United States, (6)Regrow Ag, Durham, NH, United States
 
Distributed Bioenergy with Carbon Capture and Storage: Harnessing Marginal Lands for Place-Based Energy and Climate Strategies (1854964)
Nafiseh Salehi, University of Virginia, Department of Civil and Environmental Engineering, Charlottesville, VA, United States and Majid Shafiee-Jood, University of Virginia, Civil and Environmental Engineering, Charlottesville, United States
 
Global Carbon Removal Policy and Markets Overview 1862635This paper surveys the global carbon removal landscape and identifies the key questions that need to answer where additional scientific evidence is most valuable. It discusses carbon accounting, integration into emissions trading systems, and applied research for open systems approaches. (Invited) (1862635)
Noah Deich, Carbon180, Arlington, VA, UNITED STATES
 
Updated air-sea gas exchange parameterizations specific to ocean alkalinity enhancement based on laboratory experimentation (1864608)
Nicholas D Ward1, Kyle Hinson2, Quetzali Morales Lumagui1, Dr. Jessica N Cross, PhD3, Marjorie A. M. Friedrichs4, Neema Mugofwa1, Claudine Hauri5, Israel Ruiz1, Dr. Ally Savoie1, Alexa Labossiere6, Parker MacCready7, Rémi Pagès5, Pierre St-Laurent6, Chinmayee Subban8, Jilian Xiong9 and Zhaoqing Yang2, (1)Pacific Northwest National Laboratory, Sequim, United States, (2)Pacific Northwest National Laboratory, Richland, United States, (3)Pacific Northwest National Laboratory, Richland, WA, United States, (4)Virginia Inst Marine Science, Gloucester Point, United States, (5)International Arctic Research Center, Fairbanks, AK, United States, (6)Virginia Institute of Marine Science, William & Mary, Gloucester Point, United States, (7)University of Washington, School of Oceanography, Seattle, United States, (8)Pacific Northwest National Laboratory, Energy and Environment Directorate, Sequim, United States, (9)Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, United States
 
What to Build First and Where: Quantifying the Climate and Environmental Health Opportunity Costs of Direct Air Capture (1869144)
Yannai Kashtan1, Joseph Pendleton2, Brian Sousa3, Jeremy K. Domen1, Drew Michanowicz1, Seth B.C. Shonkoff1,4 and Jonathan Buonocore5, (1)PSE Healthy Energy, Oakland, United States, (2)Harvard T.H. Chan School of Public Health, Department of Environmental Health, Boston, United States, (3)Boston University School of Public Health, Environmental Health, Boston, United States, (4)University of California, Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, United States, (5)Boston University, School of Public Health, Environmental Health, Boston, United States
 
Mapping and monitoring second-generation bioenergy crops in the USA (1870616)
Elda Yitbarek Bezuayene, University of Maryland College Park, College Park, MD, United States, Xueyuan Gao, University of Maryland, College Park, United States, Sergii Skakun, University of Maryland, Geographical Sciences, College Park, United States and Louise P Chini, University of Maryland, Department of Geographical Sciences, College Park, MD, United States
 
Integrating Phase Equilibrium, Dissolution Modeling, and Logistics Optimization for Ocean Alkalinity Enhancement Using Alkaline Waste Materials (1875337)
Shule Wang, University of California Berkeley, Environmental Science, Policy and Management, Berkeley, United States, Daniel Sanchez, University of California Berkeley, of Environmental Science, Policy, and Management, Berkeley, CA, United States and Weihong Yang, KTH Royal Institute of Technology, Materials Science and Engineering, Stockholm, Sweden
 
Maximizing Total Carbon Sequestration across Forest Ecosystems and Wood Products in the United States (1875424)
Dr. Xinyuan Wei1, Daniel Hayes2, Aaron Weiskittel3 and Jianheng Zhao2, (1)University of Maine, School of Forest Resources, Orono, ME, United States, (2)University of Maine, School of Forest Resources, Orono, United States, (3)University of Maine, Center for Research on Sustainable Forests, Orono, United States
 
Site Selection Framework for Carbon-Neutral Alkalinity Production for Open-Ocean Carbon Dioxide Removal (1879617)
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
 
Standardization of Ocean Negative Carbon Emission and Carbon Neutrality Technologies——An International Collaborative Approach Based on the ISO/TC8/WG15 Mechanism (1908028)
Yanli Lei, CHINA
 
Potential Level of Adoption and Economic Impacts of Scaling up the Carbon Dioxide Removal Industry in Canada (1910722)
Na'im Merchant and Timothy Bushman, Carbon Removal Canada, Toronto, ON, Canada
 
A Numerical Assessment of Ocean Alkalinity Enhancement Efficiency on a River-Dominated Continental Shelf—A Case Study in the Northern Gulf of America (1913096)
Yanda Ou, Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, United States; Louisiana State University, Center for Computation and Technology, Baton Rouge, United States, Z. George Xue, Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States; Louisiana State University, Center for Computation and Technology, Baton Rouge, LA, United States and Xinping Hu, The University of Texas at Austin, Marine Science Institute, Port Aransas, United States
 
Microalgal CO2 Capture with Maximal Export to Seafloor — Accelerated and Optimized Marine Processes to Add Another 37 GtCO2/yr of Atmospheric CO2 Removal and Immobilization Capacity (1921786)
Michael Routh, Global Climate & Energy Transformation, Loveland, United States, Robert Fry, Global Climate & Energy Transformation, Omaha, United States, Steven Hughes, Global Climate & Energy Transformation, Longmont, United States and Barry Wroobel, Global Climate & Energy Transformation, Moorpark, United States
 
Feedstock–production synergies enhance biochar permanency in soil (1922167)
Yahai Zhang, Johannes Lehmann, Dominic Woolf, Quan Quan, Haodi Xu, Chenxi Feng, Lifen Jiang and Yiqi Luo, Cornell University, School of Integrative Plant Science, Ithaca, United States
 
Transportation Isoemissions Identify Where Carbon Dioxide Removal Works and Who It Benefits (1928734)
Seth Whiteaker1, Anthony T O'Geen2, Claire Kisliuk2, Jaeeun Sohng3, Michal Ben Israel3, Radomir Schmidt3, Isabel P Montanez1,4 and Jennifer Pett-Ridge5, (1)University of California Davis, Institute of the Environment, Davis, CA, United States, (2)University of California Davis, Department of Land, Air and Water Resources, Davis, United States, (3)University of California Davis, Institute of the Environment, Davis, United States, (4)University of California Davis, Earth and Planetary Sciences, Davis, CA, United States, (5)Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, CA, United States
 
Natural Climate Solutions are Required for Biodiversity to Benefit from Climate Mitigation (1936816)
Xueyuan Gao1, Jonathan Levine2 and Jeffrey Smith2, (1)Princeton University, Department of Ecology and Evolutionary Biology, High Meadows Environmental Institute, Princeton, NJ, United States, (2)Princeton University, EEB, Princeton, United States
 
Cooling the Cloud: Integrating Data Center Waste Heat with Carbon Removal (1947331)
Hélène Pilorgé1, Haley McKey2, Shrey Patel3, Greg Cooney2, Makenna Damhorst3 and Jennifer Wilcox4, (1)University of Pennsylvania, Chemical and Biomolecular Engineering, Philadelphia, PA, United States, (2)University of Pennsylvania, Kleinman Center for Energy Policy, Philadelphia, United States, (3)University of Pennsylvania, Chemical and Biomolecular Engineering, Philadelphia, United States, (4)University of Pennsylvania, Department of Chemical and Biomolecular Engineering, Philadelphia, United States
 
The Impact of Regionally Differentiated MMRV Costs on Global CDR Deployment Pathways (1949872)
Shrey Patel, University of Pennsylvania, Department of Chemical and Biomolecular Engineering, Philadelphia, PA, United States, Jay Fuhrman, Pacific Northwest National Laboratory, Joint Global Change Research Institute, Richland, United States, Gokul Iyer, Pacific Northwest National Laboratory (PNNL), Joint Global Change Research Institute (JGCRI), College Park, United States and Jennifer Wilcox, University of Pennsylvania, Department of Chemical and Biomolecular Engineering, Philadelphia, United States
 
Clays as a Source of Iron for Ocean Fertilization (1959236)
Annika Bjorklund, Colby College, Department of Chemistry, Waterville, ME, United States, Jarret Mayo, Bigelow Lab for Ocean Sciences, East Boothbay, United States and Benjamin S Twining, Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States
 
The Role of Carbon Dioxide Removal in the Nationally Determined Contributions and Long-Term Strategies (1960378)
Roan Chadsey1, James Edmonds2, Matthew Gidden3, Mel George4, Haewon C McJeon5, Detlef van Vuuren6, Siddharth Joshi7, Volker Krey8, Isabela Schmidt-Tagomori9, Jay Fuhrman10, Yang Ou11, Catrin Harris12, Vassilis Diaoglou13, Yoga Pratama7 and Oumaima Rhalem13, (1)Pacific Northwest National Laboratory, Riverdale Park, United States, (2)Pacific Northwest National Laboratory, Richland, United States, (3)Center for Global Sustainability, UMD, College Park, United States, (4)University of Maryland College Park, College Park, MD, United States, (5)Pacific Northwest National Laboratory, Joint Global Change Research Institute, College Park, United States, (6)Netherlands Environmental Assessment Agency, Department of Climate, Air, and Energy, The Hague, Netherlands, (7)IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria, (8)IIASA International Institute for Applied Systems Analysis, Energy, Climate, and Environment, Laxenburg, Austria, (9)Netherlands Environmental Assessment Agency, The Hague, Netherlands, (10)Pacific Northwest National Laboratory, Joint Global Change Research Institute, Richland, United States, (11)Peking University, Environmental Science and Engineering, Beijing, China, (12)Utrecht University, Utrecht, Netherlands, (13)Netherlands Environmental Assessment Agency, Bilthoven, Netherlands
 
Mechanistic evaluation of ocean sediment carbon sequestration as a carbon dioxide removal (CDR) strategy (1966131)
Subhadeep Rakshit1, Jessica Y Luo2 and Charles A Stock2, (1)Princeton University, Princeton, NJ, United States, (2)NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States
 
Carbon Sequestration via Microbially Mediated Valorization of Industrial Waste (1966178)
Hui Sun, Massachusetts Institute of Technology, Cambridge, MA, United States, Oliver E Jagoutz, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States and Tanja Bosak, MIT, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
 
Establishing Safe Thresholds for Ocean Alkalinity Enhancement to Avoid Abiotic Precipitation of Calcium Carbonate (1966244)
Dr. Allison M Savoie1, Nicholas D Ward1, Carina Tostado1, Dr. Jessica N Cross, PhD2, Kyle Hinson3, Chinmayee Subban4 and Zhaoqing Yang3, (1)Pacific Northwest National Laboratory, Marine and Coastal Research Laboratory, Sequim, United States, (2)Pacific Northwest National Laboratory, Richland, WA, United States, (3)Pacific Northwest National Laboratory, Richland, United States, (4)Pacific Northwest National Laboratory, Energy and Environment Directorate, Sequim, United States
 
Large-Scale Carbon Dioxide Removal Will Create Public-Health, Economic, and Climate Tradeoffs (1966948)
Parisa Javadi1, Patrick R O'Rourke2, Jay Fuhrman2, Daniel H Loughlin3, Scott Doney4, William Shobe5 and Andres Clarens6, (1)IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria, (2)University of Maryland, School of Public Policy, College Park, United States, (3)Duke University, Nicholas School of the Environment, Durham, 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
 
Bringing Effective and Durable Nature-Based Carbon Removal to Scale: Successes, Challenges, and Opportunities for Translating Research Findings into Action (1969015)
Jean V Wilkening1, Ryan Huang2 and Christopher Kilner1, (1)Isometric, London, United Kingdom, (2)Isometric, New York, United States
 
Integration of Durable Carbon Removal Solutions Into Existing Infrastructure and Implications for Accurate GHG Inventory of Removal Sinks (1969893)
Anu Khan1, Beck Woollen2, Gabby Kitch3 and Lucia Simonelli3, (1)Carbon Removal Standards Initiative, Washington, United States, (2)Carbon Removal Standards Initiative, Washington D.C., United States, (3)Carbon Removal Standards Initiative, Washington DC, United States
 
Carbonate chemistry observing and mCDR: new processes, new needs, and new systems (1971367)
Dr. Jessica N Cross, PhD1, Eric P Achterberg2, Dr. Dariia Atamanchuk, PhD3, Philip Joseph Bresnahan Jr4, Robert Byrne5, Michael DeGrandpre6, Katja Fennel3, Burke R Hales7, Socratis Loucaides8, Dr. Ally Savoie9 and Aleck Zhaohui Wang10, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)University of Southampton, Southampton, United Kingdom, (3)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (4)University of North Carolina Wilmington, Earth and Ocean Sciences, Wilmington, United States, (5)University of South Florida, College of Marine Science, St. Petersburg, United States, (6)University of Montana, Department of Chemistry and Biochemistry, Missoula, United States, (7)Oregon State Univ, Corvallis, OR, United States, (8)National Oceanography Centre, Southampton, United Kingdom, (9)Pacific Northwest National Laboratory, Sequim, United States, (10)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
 
Technical, Economic, and Governance Pathways Toward Implementing Marine Enhanced Weathering at Scale (1977059)
Stephen Romaniello, Douglas O. Edwards, Zach Cockrum, Timothy Dierze and Alvis Matlija, Vesta, PBC, San Francisco, United States
 
Direct Measurement of Soil Carbon Change at Commercial Scale: Implications for Soil as a CDR Solution (1980168)
Charles D Brummitt1, Hamze Dokoohaki2, Carleen Bowers3 and Ashok A Kumar1, (1)Indigo Ag, Inc, Boston, United States, (2)Indigo Ag, Madison, Wisconsin, UNITED STATES, (3)IndigoAg, Virgina, United States
 
From the Innovators to the Facilitators: How Cross-Sectoral Collaboration Can Drive Policies That Support the Scale-Up of Carbon Dioxide Removal (1980459)
Emily C Pope, Diandra Angiello, Johanna Wassermann and Doug Vine, Center for Climate and Energy Solutions, Washington, United States
 
Accounting for Carbon with an Objective Atmospheric Basis (1981346)
Alexandra Ringsby, Stanford University, Chemical Engineering, Stanford, United States and Katharine Maher, Stanford University, Earth System Science, Stanford, United States
 
Impacts of Different Carbon Dioxide Removal Futures on Global Air Quality and Health (1981675)
Matilyn Bindl, University of Wisconsin-Madison, Nelson Institute, Madison, United States, Morgan Edwards, University of Wisconsin Madison, La Follette School of Public Affairs, Madison, United States, Jay Fuhrman, Pacific Northwest National Laboratory, Joint Global Change Research Institute, Richland, United States, Roan Chadsey, Pacific Northwest National Laboratory, Riverdale Park, United States and Jon Sampedro, Basque Centre for Climate Change (BC3), Leioa, Spain
 
Temporary carbon dioxide removal to offset short-lived climate forcers (1989083)
Yue He1, Keywan Riahi2, Matthew Gidden3, Shilong Piao4, Tao Wang5 and Thomas Gasser2, (1)Peking University, Beijing, China, (2)IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria, (3)Center for Global Sustainability, UMD, College Park, United States, (4)Peking University, Institute of Carbon Neutrality, Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Beijing, China, (5)Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
See more of: Global Environmental Change
<< Previous Session Proposal | Next Session Proposal >>