Earth system model simulations show different feedback strengths of the terrestrial carbon cycle under glacial and interglacial conditions

Adloff, Markus; Reick, Christian H.; Claussen, Martin

doi:https://doi.org/10.5194/esd-9-413-2018

Articles | Volume 9, issue 2

https://doi.org/10.5194/esd-9-413-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esd-9-413-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 9, issue 2

Research article

|

25 Apr 2018

Research article |

| 25 Apr 2018

Earth system model simulations show different feedback strengths of the terrestrial carbon cycle under glacial and interglacial conditions

Markus Adloff, Christian H. Reick, and Martin Claussen

Download

Final revised paper (published on 25 Apr 2018)
Preprint (discussion started on 03 Jul 2017)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

AC1: 'Axis annotation for figure 8', Markus Adloff, 03 Jul 2017
RC1: 'Review Adloff et al. 2017', Anonymous Referee #1, 20 Jul 2017
- AC2: 'Reply to Anonymous Reviewer 1', Markus Adloff, 28 Aug 2017
RC2: 'Poorly written manuscript', Anonymous Referee #2, 27 Jul 2017
- AC3: 'Reply to Anonymous Reviewer 2', Markus Adloff, 28 Aug 2017

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (14 Sep 2017) by Christoph Heinze

AR by Markus Adloff on behalf of the Authors (04 Jan 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (10 Jan 2018) by Christoph Heinze

RR by Anonymous Referee #3 (23 Jan 2018)

Suggestions for revision or reasons for rejection

I think the authors have done an excellent job in revising their manuscript. All concerns of the reviewers have been adequately addressed. I would recommend this manuscript for publication after a few rather minor remarks and corrections have been taken into consideration.

(please note page and line numbers refer to the annotated version of the revised manuscript)

page 3, lines 2: Check sentence (delete on "obtained"); consider replacing one of the two "obtained" in the two following sentences.

page 4, lines 2-4: I find the perspective that the "full" simulation is needed for a factor separation a bit weird. There is no reason to expect that the "clim" and "conc" simulations would add up, and it has been shown that they in general do not (Gregory et al. 2009, Zickfeld et al 2010, Schwinger et al. 2014). Therefore, the "full" simulation is needed to get the correct feedback (in the model world), the "clim" simulation can be seen as necessary for a factor separation.

page 4, line 17: Is it necessary to spell out the CMIP5 simulation names (piControl, esmFdbk1,...) here? This is rather technical, and the abbreviations are not used in the following text.

page 5, line 17: In HAMOCC, organic carbon is sedimented, so it is not only "the latter two forms"

page 7, line 7: experment -> experiment

page 8, lines 28-29: check use of parentheses

page 10, line 8-9: It might be good to mention that less evapotranspiration is caused by increased stomatal closure. That this leads to a radiative forcing via reduction in low level clouds has been shown e.g. by Doutriaux-Boucher et al. (doi:10.1029/2008GL036273, GRL 2009)

page 11, line 4: Please check sentence ("due to climate change dominates" sounds odd).

Hide

RR by Peter Rayner (17 Feb 2018)

ED: Publish subject to minor revisions (review by editor) (27 Feb 2018) by Christoph Heinze

AR by Markus Adloff on behalf of the Authors (09 Mar 2018) Author's response Manuscript

ED: Publish subject to technical corrections (16 Mar 2018) by Christoph Heinze

AR by Markus Adloff on behalf of the Authors (23 Mar 2018) Author's response Manuscript

Short summary

Computer simulations show that during an ice age a strong atmospheric CO₂ increase would have resulted in stronger carbon uptake of the continents than today. Causes are the larger potential of glacial vegetation to increase its photosynthetic efficiency under increasing CO₂ and the smaller amount of carbon in extratropical soils during an ice age that can be released under greenhouse warming. Hence, for different climates the Earth system is differently sensitive to carbon cycle perturbations.