Articles | Volume 17, issue 22
Biogeosciences, 17, 5861–5882, 2020
https://doi.org/10.5194/bg-17-5861-2020
Biogeosciences, 17, 5861–5882, 2020
https://doi.org/10.5194/bg-17-5861-2020

Research article 27 Nov 2020

Research article | 27 Nov 2020

Investigating the sensitivity of soil heterotrophic respiration to recent snow cover changes in Alaska using a satellite-based permafrost carbon model

Yonghong Yi et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (08 Sep 2020) by Michael Weintraub
AR by Yonghong Yi on behalf of the Authors (09 Sep 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (01 Oct 2020) by Michael Weintraub
RR by Anonymous Referee #1 (11 Oct 2020)
RR by Anonymous Referee #2 (17 Oct 2020)
ED: Publish as is (20 Oct 2020) by Michael Weintraub
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Short summary
We developed a 1 km satellite-data-driven permafrost carbon model to evaluate soil respiration sensitivity to recent snow cover changes in Alaska. Results show earlier snowmelt enhances growing-season soil respiration and reduces annual carbon uptake, while early cold-season soil respiration is linked to the number of snow-free days after the land surface freezes. Our results also show nonnegligible influences of subgrid variability in surface conditions on model-simulated CO2 seasonal cycles.
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