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.
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.
the Creative Commons Attribution 4.0 License.
Development and technical paper
| 
12 Jan 2021
Development and technical paper |
| 12 Jan 2021
| 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
State Key Laboratory of Earth Surface Processes and Resource Ecology, and College of Global Change and Earth System Science, and Joint Center for Global Change Studies, Beijing Normal University, Beijing, 100875, China
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
State Key Laboratory of Earth Surface Processes and Resource Ecology, and College of Global Change and Earth System Science, and Joint Center for Global Change Studies, Beijing Normal University, Beijing, 100875, China
Jiandong Gong
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
Jin Zhang
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
Jian Sun
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
Yongzhu Liu
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
Jiong Chen
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
Qingu Jiang
National Meteorological Center, Beijing, 100081, China
Numerical Weather Prediction Center of China Meteorological Administration, Beijing, 100081, China
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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.
The spin-up in GRAPES_GFS, under different initial fields, goes through a dramatic adjustment in...
