Yumi Cha
Taiwan
Research Article
Relationship between the Maximum Wind Speed and the Minimum SeaLevel Pressure for Tropical Cyclones in the Western North Pacific
Author(s): Jae Won Choi, Yumi Cha, Hae-Dong Kim and Riyu LuJae Won Choi, Yumi Cha, Hae-Dong Kim and Riyu Lu
The wind-pressure relationships for tropical cyclones (TCs) in the western North Pacific are re-examined based on the aircraft data, China Meteorological Administration (CMA) TC best track data and daily NCEP reanalysis data during 1949-1987. Minimum Sea Level Pressure (MSLP) is estimated from aircraft reconnaissance, and maximum wind speeds are adjusted from the maximum wind speed at a flight level observed by Doppler radar. Using these datasets (1,766 cases), the effects of latitude, environmental pressure and intensification trend on the wind-pressure relationships was examined. Results show that adding these factors into equations that estimate the minimum pressure given a fix maximum wind speed with greater accuracy than current methodologies. The environmental pressure and latitude produce the greatest improvements, with small additional improvements form development rate and tr.. View More»
