GC21J:
Negative Emissions: Staying Below 2°C I

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Session ID#: 15506

Session Description:
Forecasts by the IPCC and others indicate that keeping global warming below 2°C is now unlikely to be achieved solely by reduction of anthropogenic greenhouse gas (GHG) emissions. Methods of proactively removing GHG’s, especially CO2, from the atmosphere, or enhancing retention in natural sinks must now also be considered.  This session will host presentations that describe and analyze the capacity, cost, co-benefits, and impacts of the range of negative emissions methods thus far proposed.  These include biotic, chemical, geochemical, physical and hybrid approaches based on land or in the ocean. Strategies for integrating such methods into energy generation, e.g. biomass energy + carbon capture and storage, are welcome, as are presentations that explore the legal, governance, geopolitical and ethical implications of negative emissions.  Thus, this session will review the options for GHG removal and their merits, helping focus further research and policy.
Primary Convener:  Greg H Rau, University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, CA, United States
Conveners:  Noah Deich, Center for Carbon Removal, Berkeley, CA, United States, Katharine J Mach, Carnegie Institution for Science, Washington, United States and David P Keller, Carbon to Sea, United States
Chairs:  Katharine J Mach, Carnegie Institution for Science, Washington, United States and Greg H Rau, University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, CA, United States
OSPA Liaison:  Katharine J Mach, Carnegie Institution for Science, Washington, United States

Cross-Listed:
  • A - Atmospheric Sciences
  • B - Biogeosciences
  • OS - Ocean Sciences
  • PA - Public Affairs
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
6620 Science policy [PUBLIC ISSUES]

Abstracts Submitted to this Session:

Negative Emissions: The need, the potential, and the risks (Invited) (169181)
Christopher B Field, Stanford University, Woods Institute for the Environment, Stanford, CA, United States and Katharine J Mach, Carnegie Institution for Science Stanford, Stanford, CA, United States
Net Ecosystem Production and Actionable Negative Emissions Strategies (184851)
John M. DeCicco and Joonghyeok Heo, University of Michigan Ann Arbor, Ann Arbor, MI, United States
Seeing the forest beyond the carbon (193717)
Christopher Schwalm1, Alec Giffen2, Phil Duffy1, Richard A Houghton1, Frank Lowenstein2, Robert Perschel2 and Brendan M Rogers3, (1)Woods Hole Research Center, Falmouth, MA, United States, (2)New England Forestry Foundation, Littleton, MA, United States, (3)Woods Hole Research Center, Falmouth, United States
Defining the ‘negative emission’ capacity of global agriculture deployed for enhanced rock weathering (175276)
David John Beerling1, Lyla Taylor2, Steve A. Banwart3, Euripides P. Kantzas2, Mark Lomas4, Christoph Müller5, Andy Ridgwell6 and Shaun Quegan7, (1)University of Sheffield, Leverhulme Centre for Climate Change Mitigation; School of Biosciences, Sheffield, S10, United Kingdom, (2)Leverhulme Centre for Climate Change Mitigation, School of Biosciences, Sheffield, United Kingdom, (3)University of Florida, Gainesville, FL, United States, (4)Leverhulme Centre for Climate Change Mitigation, Leverhulme Centre for Climate Change Mitigation, Sheffield, United Kingdom, (5)University of East Anglia, Climatic Research Unit, Norwich, United Kingdom, (6)University of California, Department of Earth Sciences, Riverside, CA, United States, (7)University of Sheffield, Sheffield, United Kingdom
Negative Emissions: Distilling the Hope From the Hype - An Overview of Preposed Techniques to Remove Greenhouse Gases from the Atmosphere (Invited) (124893)
Tim Kruger, University of Oxford, Oxford, United Kingdom
NEOTEC: Negative-CO2-Emissions Marine Energy With Direct Mitigation of Global Warming, Sea-Level Rise and Ocean Acidification (121574)
Greg H Rau, University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, CA, United States, Jim Baird, unafiliated, Nanaimo, BC, Canada and Gary Noland, G. Noland & Assoc., Roseville, CA, United States
Carbon Dioxide Removal from Air using Seafloor Peridotite (166159)
Peter B Kelemen, Columbia University of New York, Palisades, NY, United States, Adam R Brandt, Stanford University, Department of Energy Science and Engineering, Stanford, CA, United States and Sally M Benson, Stanford University, Energy Science and Engineering, Stanford, United States
Translating climate model implications on carbon removal into policy action (159691)
Noah Deich, University of California Berkeley, Berkeley, CA, United States

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