Accelerating the spin-up of the coupled carbon and nitrogen cycle model in CLM4

Fang, Y.; Liu, C.; Leung, L. R.

doi:https://doi.org/10.5194/gmd-8-781-2015

Articles | Volume 8, issue 3

https://doi.org/10.5194/gmd-8-781-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/gmd-8-781-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 3

Development and technical paper

|

24 Mar 2015

Development and technical paper |

| 24 Mar 2015

Accelerating the spin-up of the coupled carbon and nitrogen cycle model in CLM4

Y. Fang, C. Liu, and L. R. Leung

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Final revised paper (published on 24 Mar 2015)
Preprint (discussion started on 20 Dec 2014)

Interactive discussion

Status: closed

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

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- Supplement

RC C2986: 'Referee Comment', Anonymous Referee #1, 19 Jan 2015
- AC C3291: 'Reply to reviewer 1 comments', Yilin Fang, 09 Feb 2015
RC C3245: 'Accelerating the spin-up of the coupled carbon and nitrogen cycle model in CLM4 General Comments', Yiqi Luo, 02 Feb 2015
- AC C3292: 'Reply to Dr. Luo's comments', Yilin Fang, 09 Feb 2015

Peer-review completion

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

AR by Yilin Fang on behalf of the Authors (16 Feb 2015) Author's response Manuscript

ED: Publish as is (05 Mar 2015) by Sandra Arndt

Short summary

1. A gradient projection method was used to reduce the computation time of carbon-nitrogen spin-up processes in CLM4. 2. Point-scale simulations showed that the cyclic stability of total carbon for some cases differs from that of the periodic atmospheric forcing, and some cases even showed instability. 3. The instability issue is resolved after the hydrology scheme in CLM4 is replaced with a flow model for variably saturated porous media.