This study examines how the impact of targeted observations propagates during the extra-tropical transition (ET) of Hurricane Fabian.Signal (forecast difference between denial experiments and Control
Assimilating Doppler velocities into numerical models has made positive impacts on track and intensity predictions for tropical cyclones.In recent years, a single-Doppler wind retrieval method, called
Typhoon Nari (2001) developed from a tropical mesoscale convective system (MCS), and underwent erratic movements with two loops, and variable structural and intensity changes in the vicinity of the Ku