Articles | Volume 19, issue 24
Research article
 | Highlight paper
22 Dec 2022
Research article | Highlight paper |  | 22 Dec 2022

Using atmospheric observations to quantify annual biogenic carbon dioxide fluxes on the Alaska North Slope

Luke D. Schiferl, Jennifer D. Watts, Erik J. L. Larson, Kyle A. Arndt, Sébastien C. Biraud, Eugénie S. Euskirchen, Jordan P. Goodrich, John M. Henderson, Aram Kalhori, Kathryn McKain, Marikate E. Mountain, J. William Munger, Walter C. Oechel, Colm Sweeney, Yonghong Yi, Donatella Zona, and Róisín Commane


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2022-167', Anonymous Referee #1, 27 Sep 2022
  • RC2: 'Comment on bg-2022-167', Anonymous Referee #2, 13 Oct 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (17 Nov 2022) by Paul Stoy
AR by Luke Schiferl on behalf of the Authors (17 Nov 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (18 Nov 2022) by Paul Stoy
RR by Anonymous Referee #1 (23 Nov 2022)
ED: Publish as is (29 Nov 2022) by Paul Stoy
Schiferl and colleagues combine top-down and bottom-up estimates of carbon dioxide emissions from the North Slope of Alaska to find that CO2 efflux from terrestrial and aquatic ecosystems during the early cold season (September – December) are critical for explaining its carbon balance. Fluxes during the late cold season (January through April) were muted in comparison. Despite the importance of cold-season efflux, growing season CO2 uptake and release processes dominated its interannual variability. This study helps clarify how the carbon cycle of complex tundra ecosystems across large Arctic regions respond to ongoing climate changes.
Short summary
As the Arctic rapidly warms, vast stores of thawing permafrost could release carbon dioxide (CO2) into the atmosphere. We combined observations of atmospheric CO2 concentrations from aircraft and a tower with observed CO2 fluxes from tundra ecosystems and found that the Alaskan North Slope in not a consistent source nor sink of CO2. Our study shows the importance of using both site-level and atmospheric measurements to constrain regional net CO2 fluxes and improve biogenic processes in models.
Final-revised paper