Prediction of monsoon rainfall with a nested grid mesoscale limited area model |
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| Authors: | S K Roy Bhowmik |
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| Institution: | (1) India Meteorological Department, Lodi Road, 110 003 New Delhi, India |
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| Abstract: | At the India Meteorological Department (IMD), New Delhi, a 12-level limited area model with 100 km horizontal resolution has
been in use for weather forecasting. The present study uses this model together with a higher horizontal resolution (50 km)
and vertical resolution (16-levels) model to examine the impact of increased resolution to simulate mesoscale features of
rainfall during monsoon disturbances. The model was run for 22 days in the month of August 1997 and one week in September
1997 during three monsoon depressions and one cyclonic storm in the Bay of Bengal. The model results are compared with observations.
The study shows that the model can capture mesoscale convective organization associated with monsoon depression. |
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| Keywords: | Limited area model meso-scale convective system monsoon depression orographic rainfall monsoon rainfall |
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