The Mesoscale Characteristics of Kinematics of a Wind Field near the Stationary Front

The characteristics of mesoscale structures of a wind field near the stationary front in the period of rainstorm in the Jianghuai area is analysed based on the wind data of doppler radar in Nanjing Institute of Meteorology. Results indicate that there is a cold advection in the surface layer and a warm advection at the higher level near the stationary front. At low-layer wind direction is Northeast, wind speed decreased with the altitude. At the 2. 0 km level wind speed reaches to the minimum and wind direction shifts to southwest,we find that vertical circulation and divergence exist at the low-level and convergence at the higher level.

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