Articles | Volume 8, issue 3
Geosci. Model Dev., 8, 781–789, 2015
https://doi.org/10.5194/gmd-8-781-2015
Geosci. Model Dev., 8, 781–789, 2015
https://doi.org/10.5194/gmd-8-781-2015

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 et al.

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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
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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.