Distribution of one-minute rain rate in Malaysia derived from TRMM satellite data
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Total rainfall accumulation, as well as convective
and stratiform rainfall rate data from the Tropical Rainfall
Measuring Mission (TRMM) satellite sensors have been used
to derive the thunderstorm ratio and one-minute rainfall rates,
R0.01, for 57 stations in Malaysia for exceedance probabilities
of 0.001–1% for an average year, for the period 1998–
2010. The results of the rain accumulations from the TRMM
satellite were validated with the data collected from different
ground data sources from the National Oceanic and Atmospheric
Administration (NOAA) global summary of the
day (1949–2010), Global Precipitation Climatology Centre
(GPCC) (1986–2010), and NASA (1950–1999). The correlation
coefficient and the average bias error between TRMM
and GPCC for Malaysia were found to be 0.79–0.89 and
±50 mm, respectively. The deduced one-minute rainfall rates
correlated fairly well with those obtained from the previous
work carried out in Malaysia, with correlation coefficients of
0.7 in all the 57 locations. The inferred mean annual oneminute
rainfall rates were found to be highest in the eastern
Malaysia, with values between 84.7 and 153.9mmh−1 for
0.01% exceedance, and in western Malaysia with values between
81.8 and 143.8mmh−1. The present results will be useful for satellite rain attenuation modeling in tropical and
subtropical stations around the world.
Keywords
Q Science (General), QC Physics