The Analysis of Rainfall Variability in Bangladesh

Md. Anisur Rahman

doi:https://doi.org/10.14445/22315373/IJMTT-V65I2P504

International Journal of Mathematics Trends and Technology

Research Article | Open Access | Download PDF

Volume 65 | Issue 2 | Year 2019 | Article Id. IJMTT-V65I2P504 | DOI : https://doi.org/10.14445/22315373/IJMTT-V65I2P504

The Analysis of Rainfall Variability in Bangladesh

Md. Anisur Rahman

Citation :

Md. Anisur Rahman, "The Analysis of Rainfall Variability in Bangladesh," International Journal of Mathematics Trends and Technology (IJMTT), vol. 65, no. 2, pp. 16-21, 2019. Crossref, https://doi.org/10.14445/22315373/IJMTT-V65I2P504

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.

Keywords

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

References

[1] H.M.Abdullah and M. M. Rahman, “Initiating rain water harvest technology for climate change induced drought resilient agriculture: scopes and challenges in Bangladesh”, Journal of Agriculture and Environment for International Development, Vol. 109, No. 2, P. 189-208, 2015.
[2] S.Begum and M. S. Alam, “Climate Change Impact on Rainfall over Bangladesh for Last Decades”, International Journal of Open Scientific Research, Vol.1. No.4, P.1-8, 2013.
[3] M.A.Rahman, S. M. M. Kamal and M. M. Billah, “Rainfall Variability and Linear Trend Models on North-West Part of Bangladesh for the Last 40 Years”, American Journal of Applied Mathematics, Vol. 4, No. 3, P. 158-162, 2016.
[4] S.B.Murshed, A. S. S. Islam and M. S. A. Khan, “Impact of Climate Change on Rainfall Intensity in Bangladesh”, 3rd International Conference on Water & Flood Management, Vol. 2, P.12-14, 2011.
[5] M.A.Rahman, S. M. M. Kamal and M. A. Rahman, “Trends and Variability of Rainfall over Khulna Division in Bangladesh”, Dew drop, Vol. 2, No. 1, P. 75-79, 2016.
[6] M.M.Rahman, M. O. Islam and M. Hasanuzzaman, “Study of effective rainfall for irrigated agriculture in south-eastern part of Bangladesh”, World Journal of Agricultural Sciences, Vol. 4, No.4, P.453-457, 2008.
[7] M.N.Ahasan, M. A. M. Chowdhury and D. A. Quadir, “Few aspects of the flood disaster caused by heavy rainfall over Bangladesh”, Proceedings of SAARC Seminar on Application of Weather and Climate Forecasts in the Socio-economic Development and Disaster Mitigation, P.79-94, 2008.
[8] N.M.R. Nasher, “Impact Of Climate Variability on Temperature and Rainfall Trend in Bangladesh: A case of two cities”, European Journal of climate Change, Vol.11, 2013.
[9] G.J.McLachlan and T. Krishnan, “The EM Algorithm and Extensions”, Wiley, New York City, New York, 1997.