Primary Convener:
Jennifer Pett-Ridge, Lawrence Livermore National Laboratory

Convener:
Anu Khan, Carbon Removal Standards Initiative
Isabel Montanez, University of California Davis
Tim Jesper Suhrhoff, Yale University

Early Career Convener:
Samuel Shaheen, Yale University

Chair:
Tim Jesper Suhrhoff, Yale University
Jennifer Pett-Ridge, Lawrence Livermore National Laboratory
Samuel Shaheen, Pennsylvania State University
Anu Khan, Carbon Removal Standards Initiative

To achieve carbon neutrality, scalable and cost-effective atmospheric CO2 removal (CDR) is urgently needed. Enhanced rock weathering (ERW) in working lands aims to accelerate natural weathering processes by amending agricultural soils with ground silicate rock. In some cases, ERW may be coupled with organic amendments, for coupled inorganic and organic carbon drawdown. But key unknowns limit accurate CDR quantification: ERW-organic matter interactions, ERW impacts on soil microorganisms, discrepancies between modeled and observed CDR rates, storage/transport of weathering products in multiple soil and groundwater pools, and associated spatial/temporal delays between weathering and CDR. Before widespread adoption, ERW must be accountable, including social acceptance and reliable measurement, reporting and verification (MRV) standards. In this session, we welcome basic and applied ERW studies that advance our ability to quantify its CDR potential, co-benefits and risks, its effects on agroecosystems, and investigations into public perception and policy.

Index Terms
0414 Biogeochemical cycles, processes, and modeling
0428 Carbon cycling
0485 Science policy
1039 Alteration and weathering processes

Suggested Itineraries:
Climate Change and Global Policy
Biochemistry
Global Impacts‚ Solutions‚ & Policies
Environmental Justice

Neighborhoods:
3. Earth Covering

Cross-Listed:
GC - Global Environmental Change