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Abstract:
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The present study is focused on the intensity distribution of rainfall in different classes and their
contribution to the total seasonal rainfall. In addition, we studied the spatial and diurnal variation
of the rainfall in the study areas. For the present study, we retrieved data from TRMM (Tropical Rain
Measuring Mission) rain rate available in every 3 h temporal and 25 km spatial resolutions. Moreover,
station rainfall data is used to validate the TRMM rain rate and found significant correlation
between them (linear correlation coefficients are 0.96, 0.85, 0.75 and 0.63 for the stations Kota
Bharu, Senai, Cameron highlands and KLIA, respectively). We selected four areas in the Peninsular
Malaysia and they are south coastal, east coastal, west coastal and highland regions. Diurnal variation
of frequency of rain occurrence is different for different locations. We noticed bimodal variation
in the coastal areas in most of the seasons and unimodal variation in the highland/inland area. During
the southwest monsoon period in the west coastal stations, there is no distinct diurnal variation.
The distribution of different intensity classes during different seasons are explained in detail in the
results |