Articles | Volume 14, issue 1
Geosci. Model Dev., 14, 205–221, 2021
https://doi.org/10.5194/gmd-14-205-2021
Geosci. Model Dev., 14, 205–221, 2021
https://doi.org/10.5194/gmd-14-205-2021

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 et al.

Model code and software

Simulation data from GRAPES_GFS2.3.1 for three types of initial fields and cases with restart Z. Ma https://pan.baidu.com/s/1QwBbw7PKQ6e8gZTbYhx9iA

Download
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.