EI-Nino southern oscillation and rainfall varIation over Bangladesh
Keywords:EI-Nino Southern OscillatioN, Rainfall variation, Decreasing tendency, Negative correlation, Tropical cyclones, Bay of Bengal, Standard deviation.
In the present study, an attempt has been made to examine the variations of rainfall over Bangladesh and to find possible correlation with EI-Nino/Southern Oscillation (ENSO). Four stations have been chosen from four different climatic regions of Bangladesh for this purpose, namely Jessore, Dhaka. Barisal and Srimangal. The regions have been classified according to annual rainfall amounts. The rainfall data for forty three years, (1950-1992) have been analysed. The yearly mean rainfall shows a distinct negative decreasing tendency with the occurrence of ENSO.The seasonal rainfall analysis shows a somewhat better correlation.
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