National Key R&D Program of China(2017YFC1501901,2017YFA0603901)。
The global three-dimensional variational(3D-Var)data assimilation is implemented on a new quasi-uniform overset(Yin-Yang)grid on sphere.As a quasi-uniform spherical grid,it covers the sphere by overlapping two perpend...
Key Scientific Research Project of Guangdong (2004B32601002);Promotion Project forLatest Meteorological Technology (CMATG2005M17);National Project No.973 (2004CB18307);"Research onAssimilation Techniques for Tropics based on Modern Observation Technologies"
1 INTRODUCTION The initial state of the atmosphere is one of the key factors that affect the result of NWP. With the development of increasingly finer NWP, the quality of initial atmospheric state has been drawing mor...