Spin-up characteristics with three types of initial fields and the restart effects on forecast accuracy in the GRAPES global forecast system

Ma, Zhanshan; Zhao, Chuanfeng; Gong, Jiandong; Zhang, Jin; Li, Zhe; Sun, Jian; Liu, Yongzhu; Chen, Jiong; Jiang, Qingu

doi:https://doi.org/10.5194/gmd-14-205-2021

Articles | Volume 14, issue 1

https://doi.org/10.5194/gmd-14-205-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-14-205-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 1

Development and technical paper

|

12 Jan 2021

Development and technical paper |

| 12 Jan 2021

Spin-up characteristics with three types of initial fields and the restart effects on forecast accuracy in the GRAPES global forecast system

Zhanshan Ma, Chuanfeng Zhao, Jiandong Gong, Jin Zhang, Zhe Li, Jian Sun, Yongzhu Liu, Jiong Chen, and Qingu Jiang

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Final revised paper (published on 12 Jan 2021)
Preprint (discussion started on 24 Jun 2020)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of gmd-2020-177', Anonymous Referee #1, 17 Jul 2020
- AC1: 'Response to Reviewer 1', Chuanfeng Zhao, 05 Nov 2020
SC1: 'Executive editor comment: code and data availability.', David Ham, 28 Aug 2020
- AC3: 'Response to Editor', Chuanfeng Zhao, 05 Nov 2020
RC2: 'Review of “Spin-up Characteristics with Three Types of Initial Fields and the Restart Effects on the Forecast Accuracy in GRAPES Global Forecast System” authored by Ma et al.', Anonymous Referee #2, 12 Oct 2020
- AC2: 'Response to Reviewer 2', Chuanfeng Zhao, 05 Nov 2020

Peer-review completion

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

AR by Chuanfeng Zhao on behalf of the Authors (05 Nov 2020) Author's response Manuscript

ED: Publish subject to technical corrections (10 Nov 2020) by Olivier Marti

AR by Chuanfeng Zhao on behalf of the Authors (12 Nov 2020) Author's response Manuscript

Short summary

The spin-up in GRAPES_GFS, under different initial fields, goes through a dramatic adjustment in the first half-hour of integration and slow dynamic and thermal adjustments afterwards. It lasts for at least 6 h, with model adjustment gradually completed from lower to upper layers in the model. Thus, the forecast results, at least in the first 6 h, should be avoided when used. In addition, the spin-up process should repeat when the model simulation is interrupted.