Articles | Volume 15, issue 9
Biogeosciences, 15, 2851–2872, 2018

Special issue: The 10th International Carbon Dioxide Conference (ICDC10)...

Biogeosciences, 15, 2851–2872, 2018

Research article 15 May 2018

Research article | 15 May 2018

The seasonal cycle of pCO2 and CO2 fluxes in the Southern Ocean: diagnosing anomalies in CMIP5 Earth system models

N. Precious Mongwe et al.


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (25 Jan 2018) by Katja Fennel
AR by Precious Mongwe on behalf of the Authors (06 Mar 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (07 Mar 2018) by Katja Fennel
RR by Anonymous Referee #1 (07 Mar 2018)
RR by Anonymous Referee #3 (22 Mar 2018)
ED: Publish subject to minor revisions (review by editor) (30 Mar 2018) by Katja Fennel
AR by Natascha Töpfer on behalf of the Authors (17 Apr 2018)  Author's response
ED: Publish as is (17 Apr 2018) by Katja Fennel
Short summary
Here we analyze seasonal cycle of CO2 biases in 10 CMIP5 models in the SO. We find two main model biases; exaggeration of primary production such that biologically driven DIC changes mainly regulates FCO2 variability, and an overestimation of the role of solubility, such that changes in temperature dominantly drive FCO2 seasonal changes to an extent of opposing biological CO2 uptake in spring. CMIP5 models show greater zonal homogeneity in the seasonal cycle of FCO2 than observational products.
Final-revised paper