🚨 Collapse of the land carbon sink in 2023 🚨

As the CO2 growth rate reached a record high at Mauna Loa, we set up a low-latency analysis of the carbon budget and found that plants and soils absorbed almost no CO2 last year @gcarbonproject @gpbalsamo

arxiv.org/abs/2407.12447
We used a very high resolution atmospheric inversion at 0.7° and @IamOCO2 column CO2 concentration

3 dynamic vegetation models forced by climate data @CopernicusECMWF

AI-emulators of process & data driven ocean models @gcarbonproject

Fire emissions @GuidovanderWerf & GFAS

🌲🌳 🍂 Forte baisse de l’absorption du CO2 par les forêts

🚨 les forêts 🇫🇷 absorbent 2 fois moins de carbone qu’il y a dix ans !

Un petit thread … Les données sont ‘officielles’ - celles du CITEPA basées sur l’inventaire forestier national de @IGNFRA ( plusieurs milliers de placettes forestières dont 20% est re-mesuré tous les ans et évalue les changements à cinq ans lors de chaque campagne annuelle)
inventaire-forestier.ign.fr

Why did #methane surge in 2020 ?

Our article just published @Nature shows that the high growth rate of CH4 in 2020 is explained half by decreased OH removal & half by more wetland emissions @ShushiPeng @CEA_Officiel @gcarbonproject @IPSL_outreach … 🧶

nature.com/articles/s4158… We expected in 2020 less anthropogenic emissions from #COVID but in fact the #CH4 growth rate was record high at 15.1 ppt y-1 (@NOAA data )