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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)


Article Title: Characteristics of Diurnal Variation of Summer Monsoon Rainfall over Bangladesh and its Adjacent Areas
by M. T. H. Bhuiyan, M. D. I. Bhuyan, M. N. Chowdhury, Choudhury Wahid and S. B. Faruque

This paper attempts to look into the diurnal variation of Summer Monsoon (JJAS) rainfall and its features over Bangladesh and its adjacent areas using Tropical Rainfall Measuring Mission (TRMM) 3B42 satellite gridded data for the period of 2001-2010. This analysis reveals dual maxima of three hourly rainfall which occur during noon to afternoon (1200 LST-1500 LST) and late night to early morning (0300 LST-0600 LST) periods over the study area. It also reveals that the interested area receives greater amount of daytime rainfall than the nighttime rainfall for last decade (2001-2010) and are not influenced by the heavy or less (drought) rainfall occurring years. Study on spatial variation of precipitation discloses that the maximum precipitation is observed near the coastal areas and northern regions of our studying domain. It is evident from the study that the monsoon season over these regions shows a gradual shift. But the most interesting outcome is we have found distinguished periodicity in the rainfall data pattern for three hourly rainfalls as well as daily and monthly even yearly total of daytime or nighttime rainfall whatsoever we consider.
Keywords: climatology, monsoon, diurnal variation, precipitation, convective activity.
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom



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