Dear Dr Mikola

I accept your manuscript subject to minor revisions. Please upload your revised manuscript and point-by-point response letter where you explain what exactly has been modified in the paper in response to reviewer comments. I will review the revised manuscript myself.

Yours sincerely

Victor Brovkin

Dear Dr. Mikola,

you accounted well for the reviewer comments. I have only two further suggestions, both of minor origin:
1) Your abstract is still too long. It could be further reduced, as details on LCT and soil attributes could be found in the Methods section. I highlighted suggested text removal in the attachment.
2) You are arguing that your study is important for analysis of carbon exchange in tundra. I agree it is, but to make any use of your data for carbon research community you need to provide carbon content of organic matter. I suggest to you to indicate in the result section what is the carbon content of biomass (around 50%?) and soil organic matter. Any quantification in carbon units will be very helpful for Earth System models.

With these improvements, I am pleased to accept your paper for publication in Biogeosciences.

Yours sincerely,

Victor Brovkin