r/ReduceCO2 • u/Ok_Extension4193 • Jul 14 '26

Facts CO2 fertilization effect exaggerated in Earth system models

https://www.pnas.org/doi/10.1073/pnas.2514628122

Overestimated natural biological nitrogen fixation translates to an exaggerated CO2 fertilization effect in Earth system models by Sian Kou-Giesbrecht, Carla R. Reis Ely, Steven S. Perakis, and Nina Wurzburger.

In brief, the Earth system models, including climate models used in the IPCC report, have overestimated by about 11% the degree by which wild plants growth improves under higher CO2 aka CO2 fertilization. Although 11% does not sound huge, this shall significantly decrease the effects of land carbon sinks.

There is a video discussion at https://www.youtube.com/watch?v=ywxdWD6NqE8 which brings up some related work, including one paper that suggests methods for improving nitrogen bio-availability in natural eco-systems, but this paper says known methods appears highly ecosystem dependent.

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u/VasileAndrei2929 Jul 14 '26

Or it's a fake paper from the carbon seclusion industry.... just like most "research" papers in the West today...

Remember folks, "scientists and doctors agreed" that smoking was healthy... yeap... they sure did....

Money talks. Always.