ANNUAL AND SEASONAL TRENDS OF PRECIPITATION IN MOULVIBAZAR DISTRICT OF BANGLADESH FROM 1950 TO 2014 USING MANN-KENDALL TEST

M S A Talucder
Journal of the Sylhet Agricultural University, Volume 2, Issue 2, 2015, Pages 183-188

Abstract:

Investigating long term trend of precipitation is important for understanding the effect of climate change. The objective of this study was to document and examining the seasonal and annual trends of precipitation in Moulvibazar district of Bangladesh from daily precipitation data of Sreemangal Meteorological Station of Moulvibazar for a period of 65 years (1950-2014) using the non-parametric Mann-Kendall test. Annually, 65 years average precipitation was 2420±390 mm whereas dry season (December-March), pre-monsoon (April-May), monsoon (June-September) and post-monsoon (October-November) seasons average were 131±89 mm, 639±223 mm, 1447±276 mm and 203±111 mm, respectively. Dry season showed the most inconsistency (coefficient of variation, CV 68%) while monsoon season showed the most consistency (CV 19%) among the seasons. The findings of the non-parametric Mann-Kendall test reveal that significant decreasing trend of rainfall was only found in monsoon season time series. No significant trend was found in either annually (decreasing), dry season (decreasing), pre-monsoon season (increasing) and post-monsoon season (decreasing).

Keywords:

Precipitation, trend analysis, climate change


Full Text

PDF

642 Views


Cite this article

M S A Talucder. 2015. ANNUAL AND SEASONAL TRENDS OF PRECIPITATION IN MOULVIBAZAR DISTRICT OF BANGLADESH FROM 1950 TO 2014 USING MANN-KENDALL TEST, Journal of the Sylhet Agricultural University 2(2): 183-188.