A.Madhulatha, Jimy Dudhia ,Rae-Seol Park and M.Rajeevan, IMD, India

Current study deals with the time evolution of latent heating profiles and contribution of microphysical processes during different stages of mesoscale convective system (MCS) over Korean peninsula. Numerical simulation is conducted by four nested domain configuration using WRF model with two-way nesting method. Advanced physics options from the Korean Integrated model (KIM) are utilized. Latent heating computation associated with major transformation processes (condensation, evaporation, freezing, melting, deposition, and sublimation) is based on various microphysical transformation terms of WDM6 microphysics scheme. During the developing (dissipating) stages of MCS latent heating (cooling) is dominated by condensation, nucleation, deposition (evaporation and melting). Major positive (negative) total latent heating provided (restrained) the energy for convection during developing and dissipating stages of system. Large amounts of hydrometeors with strong upward motion in the developing stage explains the ascent of air parcel from surface to upper levels and latent heat release associated with transformation of air parcel from one form to the other. Also, strong downward motions at the lower levels correspond to the precipitation fall out during dissipation. Consistency between cloud hydrometeors, net heating rates, major upward (downward) motion and corresponding rainfall in developing (dissipating) stages of MCS is noticed.