Reminds me of 🇸🇪

From what I understood from Dr Grassi's post is that: "IPCC has recently decided that its 7th Assessment Report will present land-use CO₂ estimates and scenarios that align with national inventory definitions."

And as I just now read.. from your comment piece in nature IPCC will also adopt managed land proxy and country inventory methodology for AR7. Btw Glen are you aware of the GHG Protocol and land sector standard targeted to be finalised end of CY25?

Yeah it does seem somewhat challenging to parse out unambigiously what part of the land sink / source is due to CO2 fertilisation, what part due to extended or reduced droughts, and / or all aspects of forest & land management. Hence IPCC is sticking with the MLP for country UNFCCC reports.

Thanks Glen! I am sure you are aware of www.ipcc-nggip.iges.or.jp/public/mtdoc...
It appears that colleagues / scientist who work in the field of NGHGI tend to argue that modelers have a tendency to overstate their confidence about their ability to quantify the CO2 fertilisation effect.

2/2 I am specifically wondering about evidence that managed forest land in Sweden and Finland were much larger carbon sinks than largely unmanaged "analogue" boreal forests in Russia, Canada or Alaska over past 100 years. I d argue management effects on CO2 balances far outweighs CO2 fertilisation.

1/2 Thanks Glen, this is a lovely deep dive. I ll have a closer look at the links and studies you shared. How confident are you that increased carbon sinks are largely due to CO2 fertilisation? In other words how confident are we in model outcomes while observations may tell a different story?

Hi Glen, how does the science distinguish what part of the land sink/source comes from CO2 fetilization, what part from changes in precipitation or growing seasons, and what part from management, harvest, planting, tree breeding, fire management, or pest and diseases?

In Sweden they say to cut it while flowering. You can put it for decoration in a vase.. it is considered quite invasive.

Will the farmers be taxed based on carbon opportunity or on emissions that actually occur?