Natural feedbacks amplify warming

A new study in Environmental Research Letters estimates emissions from thawing permafrost, warming lakes, drying wetlands and larger wildfires could amplify human‑caused warming by roughly 20–30% by 2100, adding about 0.2–0.4°C depending on emissions scenarios. These landscape‑scale emissions are largely missing from many policy models and so reduce the remaining carbon budget. — If real, the multiplier means governments must adopt faster and deeper emissions cuts and update national targets and adaptation planning to avoid higher risks than current models predict.