[MCN] Carbon markets underestimate the risks U.S. forests face from climate change

[Lance Olsen]

20-May-2026
 
Carbon markets underestimate the risks U.S. forests face from climate change
UNIVERSITY OF UTAH
PEER-REVIEWED PUBLICATION
New research led by the University of Utah documents how carbon markets, a pillar of climate policy, fail to accurately account for the risks U.S. forests face from climate change. The team produced maps that show where the risk of loss from fire, insects and drought are most elevated, and therefore best avoided for forest preservation projects.

JOURNAL
Nature
 <https://www.eurekalert.org/news-releases/1128376>
nature <https://www.nature.com/>  articles <https://www.nature.com/nature/articles?type=article>  article
Article
Published: 20 May 2026
Forest carbon protocols underestimate climate-driven carbon loss risks

Chao Wu <https://www.nature.com/articles/s41586-026-10571-y#auth-Chao-Wu-Aff1-Aff2-Aff3>, Grayson Badgley <https://www.nature.com/articles/s41586-026-10571-y#auth-Grayson-Badgley-Aff4>, Michael L. Goulden <https://www.nature.com/articles/s41586-026-10571-y#auth-Michael_L_-Goulden-Aff5-Aff6>, James T. Randerson <https://www.nature.com/articles/s41586-026-10571-y#auth-James_T_-Randerson-Aff5>, Anna T. Trugman <https://www.nature.com/articles/s41586-026-10571-y#auth-Anna_T_-Trugman-Aff7>, Jonathan A. Wang <https://www.nature.com/articles/s41586-026-10571-y#auth-Jonathan_A_-Wang-Aff3>, Linqing Yang <https://www.nature.com/articles/s41586-026-10571-y#auth-Linqing-Yang-Aff2-Aff3>, Nezha Acil <https://www.nature.com/articles/s41586-026-10571-y#auth-Nezha-Acil-Aff8>, Susan C. Cook-Patton <https://www.nature.com/articles/s41586-026-10571-y#auth-Susan_C_-Cook_Patton-Aff9>, Danny Cullenward <https://www.nature.com/articles/s41586-026-10571-y#auth-Danny-Cullenward-Aff10>, Steven J. Davis <https://www.nature.com/articles/s41586-026-10571-y#auth-Steven_J_-Davis-Aff11>, Christopher A. Williams <https://www.nature.com/articles/s41586-026-10571-y#auth-Christopher_A_-Williams-Aff12> & William R. L. Anderegg <https://www.nature.com/articles/s41586-026-10571-y#auth-William_R__L_-Anderegg-Aff2-Aff3> 
Nature <https://www.nature.com/> (2026) Cite this article <https://www.nature.com/articles/s41586-026-10571-y#citeas>
Abstract
Although the reduction of fossil fuel emissions remains of the utmost importance to mitigate climate change, maintaining and enhancing carbon sinks in forests have been widely promoted as nature-based climate solutions1 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR1>,2 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR2>,3 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR3>,4 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR4>. However, disturbances that could result in losses of forest carbon stocks are poorly accounted for when estimating the potential role of forests in climate mitigation5 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR5>,6 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR6>,7 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR7>. This makes it difficult to appropriately size ‘buffer pools’: a mechanism designed to compensate for unintended carbon losses in carbon crediting projects8 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR8>,9 <https://www.nature.com/articles/s41586-026-10571-y#ref-CR9>. Here we use forest inventory, satellite data, disturbance modelling and machine learning to map reversal (carbon loss) risk in the contiguous United States (CONUS) from natural disturbance. Across CONUS forests, we show that climate change increases the 100-year risk of carbon losses from natural disturbance, particularly in California and the Intermountain West. The current buffer pool of the largest CONUS forest climate mitigation programme is likely too small by an average factor of 6.3, and this could range from 2.2- to 8.0-fold too small when considering uncertainties around future climate scenarios, disturbance severity and other carbon pools. We provide spatially explicit maps of the long-term risks to forest carbon losses from natural disturbances, which highlight that current methodologies used for constructing carbon offset buffer pools require revisions to succeed under climate change.



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