CO2 passed 400 ppm in 2016, while plants passed a carbon tipping point in 2006

Trees and plants reached ‘peak carbon’ 10 years ago

See the article by Kate Ravilious at COSMOS Magazine

A recent study has indicated that trees and plants may have reached their ‘peak carbon’ capacity 10 years ago; and for this reason the Earth might no longer have a strong terrestrial carbon sink. This may be called a ‘peak carbon’ for land vegetation because since about 2006 the appetite of land plants for carbon has been decreasing.

The article by Kate Ravilious goes on to say that there is evidence that we are tipping towards runaway or irreversible climate change – which comes as a “shock”, because previous estimates indicated that the plant-carbon peak would occur much later, around 2030. The amounts of carbon involved are enormous – comparable to the emissions of whole nations. A conclusion is that drastic actions are needed to wrestle global warming under control.

The Mauna Loa observatory shows that for the first time since mankind arrived on Earth, the atmospheric CO2 levels have passed 400 ppm all year round. We have entered into a new period of greenhouse gas driven climate change.

References

https://cosmosmagazine.com/climate/trees-and-plants-reached-peak-carbon-10-years-ago

https://scripps.ucsd.edu/programs/keelingcurve/wp-content/plugins/sio-bluemoon/graphs/mlo_two_years.png