Simulated Doppler Images of Mesoscale System

The basic relationship between the Doppler velocity (radial velocity component) field and the horizontal wind field is analyzed mathematically. The major features of Doppler velocity image for various typical mesoscale systems, such as shear lines, vortex and low level jet, are discussed using the simulated Doppler images. The results can be used to interpret qualitively the observed Doppler pattern in nowcasting