The analysis of 15m/s wind radius of Typhoon in NMSC/KMA

The objective methods estimating 15m/s radius of wind of tropical cyclones(TCs) are discussed using infraed (IR) imagery of geostationary satellite, and an alternative method is suggested that can estimate RMW in the TCs having eyes using IR imagery. The 15m/s radius of wind of TCs estimating methods are based on the characteristic structure of the eyewall of a tropical cyclone. strong wind is dependent upon the radius of the eye and the distance from the center to the top of the most developed convective cloud. In order to test these methods, blackbody brightness temperature of Korean geostationary satellite, COMS (Communication,Ocean, and Meteorological Satellite) IR imagery are utilized in this study. The estimated strong wind radius are validated with surface winds of ASCAT (Advanced Scatterometer) of a polar orbiting satellite.