To test the model performance on the simulated winds and PBL structure two available turbulence parameterization
schemes (YSU and MYJ) are considered separately. While both the PBL schemes showed similar capability in producing many of the broad features of the flow, a few differences are noticed especially in the surface level variables andmixing layer depth. Diurnal variation in the surface wind direction is better represented with MYJ scheme. The growth of TIBL across the coast is well produced in the simulation with YSU scheme which has simulated the observed shallow IBL height near the coast.
Simulated sea breeze front is more intense in the case with YSU PBL which produced higher surface convergence,
upward divergence and vertical motion than the MYJ scheme. As compared to MYJ, YSU scheme tends to produce more
realistic mixing heights both at the coast and inland. Day time mixed layer produced by the MYJ scheme is deeper near the coast and shallow far inland than that simulated using YSU scheme. The computationally simple YSU scheme has given overall better results in the present simulation. Model results showed observed trends in the surface and upper air variables in the region indicating the applicability of model generated meteorological fields for dispersion studies. The study indicates the trajectory and plume dispersion pattern from air pollution sources in the region would be influenced by the mesoscale circulations, which needs to be studied from the modeled meteorological parameters.