In the present study we have carried out few experiments to see the impact of sea surface temperature (SST) field
obtained from TRMM Microwave Imager on the simulation of tropical cyclone MALA, formed over the Bay of Bengal
on 24th April 2006 and made landfall on 29 April 0600 UTC at Arakan coast in Myanmar (17.7 N, 94.5 E). We have
used NCEP global analysis data for this study. In this global analysis the Reynolds SST field is used as ocean boundary
condition, which is having coarser resolution. Some experiments were carried out in past where people found that the
wind stress fields in the ECMWF model improved dramatically after implementation of improved SST boundary
condition. Also, satellite microwave measurement of SST by the TMI and Advance Microwave Scanning Radiometer
(AMSR-E) have revealed that SST in regions of strong SST fronts associated with ocean currents exert a strong
influence on the marine atmospheric boundary layer, resulting in a remarkably high positive correlation between surface
winds and SST on scales smaller than few thousand kilometers. Here we have replaced coarser resolution SST in the
control runs with high-resolution microwave based SST, obtained from TMI. Results are sowing that, the use TMI SST
as ocean boundary condition has positive impact on the simulation of tropical cyclone.
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