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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 31, issue 11
Ann. Geophys., 31, 2013–2022, 2013
https://doi.org/10.5194/angeo-31-2013-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 31, 2013–2022, 2013
https://doi.org/10.5194/angeo-31-2013-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 19 Nov 2013

Regular paper | 19 Nov 2013

Distribution of one-minute rain rate in Malaysia derived from TRMM satellite data

T. V. Omotosho1,2,3, J. S Mandeep2,3, M. Abdullah2,3, and A. T. Adediji2,4 T. V. Omotosho et al.
  • 1Department of Physics, College of Science and Technology Covenant University PMB 1023 Ota, Ogun state, Nigeria
  • 2Institute of Space Science, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Malaysia
  • 3Department of Electrical, Electronic and System Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Malaysia
  • 4Department of Physics Federal University of Technology, Akure Ondo State, Nigeria

Abstract. 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 one-minute rainfall rates were found to be highest in the eastern Malaysia, with values between 84.7 and 153.9 mm h−1 for 0.01% exceedance, and in western Malaysia with values between 81.8 and 143.8 mm h−1. The present results will be useful for satellite rain attenuation modeling in tropical and subtropical stations around the world.

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