Major carbon sink may have vanished for a second year in a row

SEI 259961804


Drone view of savanna vegetation and rock formation

Vegetation like that in the Chapada das Mesas National Park, Brazil, is no longer removing as much CO₂ from the atmosphere

Pulsar Imagens/Alamy

Hot and wet weather in 2024 – the hottest, wettest year on record – caused ecosystems on land to emit nearly as much carbon dioxide as they took out of the atmosphere, according to a preliminary analysis. This is the second year in a row in which the land carbon sink has nearly vanished due to climate-related stressors, and would explain why 2024 saw a record jump in the concentration of CO₂ in the atmosphere.

The findings could also mean that the land carbon sink – which normally removes billions of tonnes of CO₂ from the atmosphere each year and is essential for meeting…



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