A Case Study of Heavy Rain Spell on 13th-25th December 1982 over the East Coast of Peninsular Malaysia and Singapore

Abstract

The meridional wind compnents and the vertical p-velocities over the east coast of Peninsular Malaysia and Singapore were computed for the period of the heavy rain spells from 13th to 25th December 1982. The relationship between the heavy rain spells and the Hadley cell was investigated. The following significant features are noted : (1) The formation of the heavy rain spells over the east coast of Peninsular Malaysia and Singapore are mainly caused by strong upward motions of moist air in the southern branch of the Hadley cell. (2) The maximum upward velocities in mid-troposphere are caused by the combination of strong low-level convergence and the initial appearance of the equatorial cell in the southern branch of the Hadley cell.