The Analysis of Rainfall Variability in Bangladesh

  IJMTT-book-cover
 
International Journal of Mathematics Trends and Technology (IJMTT)
 
© 2019 by IJMTT Journal
Volume-65 Issue-2
Year of Publication : 2019
Authors : Md. Anisur Rahman
  10.14445/22315373/IJMTT-V65I2P504

MLA

MLA Style:Md. Anisur Rahman "The Analysis of Rainfall Variability in Bangladesh" International Journal of Mathematics Trends and Technology 65.2 (2019): 16-21.

APA Style: Md. Anisur Rahman (2019). The Analysis of Rainfall Variability in Bangladesh. International Journal of Mathematics Trends and Technology, 65(2), 16-21.

Abstract
Climate change has created a new challenge to hamper development process throughout the world. Of the burning climatic situations of these times like global warming, floods, drought, heat waves, soil erosion and many other climatic issues are directly related with rainfall. Climate Change is already a painful reality in Bangladesh: farmers and peasants are facing losses of their harvest every year due to continual reduced rainfall. In this study data have been extracted from the Bangladesh Meteorological Department (BMD). The variability and distribution of rainfall has been analyzed using statistical tools. The average annual and monsoon rainfall for different stations and regions of Bangladesh are anticipated to analyze the variation and to estimate trend for the period 1975 to 2017. The excessive and deficient rainfall years have been identified. The average and standard deviation of rainfall in Bangladesh have been estimated from yearly rainfall data. The analysis of the present study on the variability and trends of annual and monsoon season rainfall of regional and all over Bangladesh have been analyzed. Findings reveal that the annual average rainfall amount is found to be between 154 mm to 247 mm, having standard deviation of 41 mm to 97 mm, whereas the monsoon season’s average rainfall amount is found to be between 333 mm to 539 mm, having standard deviation of 113 mm to 235 mm. It has been also observed from the analyses that the annual and monsoon rainfall are in a decreasing trend in all regions of the study except East region. The outcome of this study would expectantly help the planners and program managers to take necessary actions and to measure disaster management, drought mitigation, flood control agricultural production etc.

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Keywords
variability, trend, analysis, rainfall, Climate change, Bangladesh