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Nature
Author Correction: Atmospheric warming contributions from airborne microplastics and nanoplastics
Abatify Summary
Nature & Climate Perspective
**Corrected estimates of airborne microplastics and nanoplastics highlight their unrecognized role in accelerating atmospheric warming and disrupting global radiative forcing baselines. **
- Airborne MNPs act as localized climate forcers, directly absorbing and scattering radiation, which alters regional atmospheric temperature profiles.
- Deposition of these particles onto snow, glaciers, and marine environments drastically reduces albedo and accelerates melting, threatening critical LULUCF baselines.
- Microplastic contamination in marine ecosystems impairs phytoplankton growth, directly undermining the ocean's long-term blue carbon sequestration capacity.
Market & Policy Outlook
**The systemic risk of unaccounted aerosol warming from microplastics challenges the ICVCM's 'robust quantification' principle and demands stricter Scope 3 emissions accounting. **
- This atmospheric warming contribution complicates baseline settings for Article 6.2 and 6.4 crediting mechanisms, as unaccounted positive warming feedbacks threaten project permanence.
- Corporations face pressure to integrate plastic lifecycle impacts into their Scope 3 emissions under SBTi frameworks to reflect true climate warming contributions.
- Regulatory bodies may shift policies toward pricing plastic pollution as an indirect carbon equivalent, impacting the market value of LULUCF and Blue Carbon offset projects due to increased environmental baseline risks.
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