Modeling the impacts of diffuse light fraction on photosynthesis in ORCHIDEE (v5453) land surface model

Zhang, Yuan; Bastos, Ana; Maignan, Fabienne; Goll, Daniel; Boucher, Olivier; Li, Laurent; Cescatti, Alessandro; Vuichard, Nicolas; Chen, Xiuzhi; Ammann, Christof; Arain, M. Altaf; Black, T. Andrew; Chojnicki, Bogdan; Kato, Tomomichi; Mammarella, Ivan; Montagnani, Leonardo; Roupsard, Olivier; Sanz, Maria J.; Siebicke, Lukas; Urbaniak, Marek; Vaccari, Francesco Primo; Wohlfahrt, Georg; Woodgate, Will; Ciais, Philippe

doi:https://doi.org/10.5194/gmd-13-5401-2020

Articles | Volume 13, issue 11

https://doi.org/10.5194/gmd-13-5401-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-13-5401-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 11

Model description paper

|

10 Nov 2020

Model description paper |

| 10 Nov 2020

Modeling the impacts of diffuse light fraction on photosynthesis in ORCHIDEE (v5453) land surface model

Yuan Zhang, Ana Bastos, Fabienne Maignan, Daniel Goll, Olivier Boucher, Laurent Li, Alessandro Cescatti, Nicolas Vuichard, Xiuzhi Chen, Christof Ammann, M. Altaf Arain, T. Andrew Black, Bogdan Chojnicki, Tomomichi Kato, Ivan Mammarella, Leonardo Montagnani, Olivier Roupsard, Maria J. Sanz, Lukas Siebicke, Marek Urbaniak, Francesco Primo Vaccari, Georg Wohlfahrt, Will Woodgate, and Philippe Ciais

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Final revised paper (published on 10 Nov 2020)
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Preprint (discussion started on 18 Jun 2020)
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Interactive discussion

Status: closed

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

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RC1: 'Review of “Modeling the impacts of diffuse light fraction on photosynthesis in ORCHIDEE (v5453) land surface model”', Anonymous Referee #1, 22 Jul 2020
- AC1: 'Response to Anonymous Referee 1', Yuan Zhang, 03 Sep 2020
RC2: 'Reviewing comments on Zhang et al. Modeling the impacts of diffuse light fraction on photosynthesis in ORCHIDEE (v5453) land surface model', Anonymous Referee #2, 05 Aug 2020
- AC2: 'Response to Anonymous Referee 2', Yuan Zhang, 03 Sep 2020

Peer-review completion

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

AR by Yuan Zhang on behalf of the Authors (07 Sep 2020) Author's response Manuscript

ED: Publish as is (25 Sep 2020) by Gerd A. Folberth

Short summary

We improved the ORCHIDEE LSM by distinguishing diffuse and direct light in canopy and evaluated the new model with observations from 159 sites. Compared with the old model, the new model has better sunny GPP and reproduced the diffuse light fertilization effect observed at flux sites. Our simulations also indicate different mechanisms causing the observed GPP enhancement under cloudy conditions at different times. The new model has the potential to study large-scale impacts of aerosol changes.