Vol. 9, Issue 9 (2020)

Author(s):
Rakesh Kumar Kushwaha, AK Singh, AN Mishra, SR Mishra, Alok Kumar Pandey, Arun Kumar and Suraj Kumar

Abstract:
District wise monthly rainfall data of Eastern Plain Zone of Uttar Pradesh recorded during the years 1981 to 2017 were used in the present study. The rainfall totals for the summer (March to May), South-West monsoon (June to September), rabi (October to December) and winter (January to February) seasons were computed year wise for various districts of Eastern Plain Zone of U.P. The inter-seasonal and intra-seasonal variability in weather is believed in recent years to outsmart the abilities of climatologist and statisticians in defining the limits within which these variabilities can be observed. El-Nino is a pervasive climatic phenomenon that was found to be associated with regional climate variations throughout the world. Analysis of long term data suggests an inverse relationship between El-Nino and South-West monsoon rainfall. However, there is no one to one relationship as El-Nino years have not always produced severe drought. The analysis was performed to assess the association between El-Nino episodes on rainfall and temperature in the Eastern Plain Zone of U.P. The average South-West monsoon rainfall, summer rainfall, Winter rainfall, and total annual rainfall received during the years with El-Nino were found to be less compared to normal years, In general, it was observed that the South-West monsoon rainfall and the annual rainfall was found less during the El-Nino years. The mean annual temperature was found not to vary much during El-Nino years.