Role of Sea Surface Temperature in Simulation of Arabian Sea Cyclone - Monitoring and Prediction of Tropical Cyclones in the Indian Ocean and Climate Change - page 338

Fig. 2: The mean sea level pressure (MSLP, in hPa) obtained from model simulations
of (a) control, (d) same SST, and (g) Inserted SST grad for initial conditions; (b), (e)
and (h) are same as (a), (d) and (g) but for day-3; and (c), (f) and (i) are same as (a), (d)
and (g) but for day-5. The value on right side above the panel represents central pressure
drop (CPD) of the corresponding experiment.
that upper air divergent is present at 200 hPa in both Control and Inserted SST
grad experiments. The location of the divergence at upper air is southward as
compared to the convergence location in the low level (850 hPa) in the
corresponding experiments. It is noted that the divergence location in the
Inserted SST grad is more west-southwest wards as compared to control
experiments. On day-3, the stronger divergence occurs at 200 hPa in control
experiment; however the divergence occurs below 200 hPa pressure level in
Inserted SST grad. This is probably due to decaying in intensity during day-3
and day-4 when the system is passing through no SST gradient region. On
day-5 when the system is close to land and reaches its peak intense stage, the
divergence in Inserted SST grad is well represented at 200 hPa. The divergence
in Control is not seen in 200 hPa since it occurs above the 200 hPa pressure
level. This is because the storm is more intense in the Control than the Inserted
SST grad experiments on day-5.