Climatological features of rapidly intensifying (RI) tropical cyclones in NW pacific west of 135°E~1

摘要

Tropical cyclones which rapidly intensify (△V≥20 m/s in 24 h) in the Northwest Pacific Ocean west of 135°E could have adverse influence on oceanic and coastal economic activities in China, 71/100 of which land in China. Rapid intensification is mostly seen east and northeast of the Luzon Island. It is much correlated with sea Surface temperature (≥28 deg. C) and upper air conditions, such as enhanced subtropical high, onset of Southwest Monsoon surge, invasion of modest cold air, and Tropical Upper Tropospheric Trough(TUTT) etc.