State Key Laboratory of Severe Weather;
Chinese Academy of Meteorological Sciences;
China Meteorological Administration;
Beijing 100081;
Guangdong–Hong Kong–Macao Greater Bay Area Weather Research Center for Monitoring Warning and Forecasting(Shenzhen Institute of Meteorological Innovation);
Shenzhen 518048;
global weather forecast model; finite-volume methods; model accuracy; irregular spherical grids; C-grid and Z-grid schemes;