[toomuchtodo]

I believe it is positive feedback loop tipping points being reached (thawing permafrost, for example), which is accelerating change beyond was was previously modeled.

https://salatainstitute.harvard.edu/thawing-permafrost-what-...

https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...

[toomuchtodo]

Additional citation:

A third of the Arctic’s vast carbon sink now a source of emissions, study reveals - https://www.theguardian.com/environment/2025/jan/21/third-of...

Wildfires offset the increasing but spatially heterogeneous Arctic–boreal CO2 uptake - https://www.nature.com/articles/s41558-024-02234-5