Jae Won Choi
State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences,
Beijing 100029
China
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»
