Operational Technique in Typhoon Wind Radii Using Satellite Microwave Remote Sensor Data

Abstract

In this paper, the system will be introduced and explain for the practical techniques might consider and use the typhoon wind radii on near real-time using satellite microwave remote sensor data. The system is created to use Typhoon weather forecast and validation of radii of 15 and 25 m/s (around 30 and 50 kts) gale-force wind over the ocean using satellite data. Korean Meteorological Administration (KMA) is receiving Defense Meteorological Satellite Program (DMSP), AQUA, and QuikSCAT data directly or indirectly via File Transfer Protocol (FTP) over the Global Telecommunication System (GTS) and process the wind speed. Also it receives Satellite Report (SAREP) which reports the position of the center of typhoon and it will be used for radius calculation. The system will calculate the radii of 15 and 25 m/s winds for four quadrants and also plot the each directional winds according to the distance from the center of the typhoon. It will run every 6 hours from the beginning of tropical depression to touch down to the land. With this system, 2006-2007 typhoon cases are processed to compare with the Regional Specialized Meteorological Center (RSMC) - Tokyo Typhoon Center best track and KMA forecasted data as well as the track errors.