A comparative study of trends in rainfall over meteorological subdivisions of Uttar Pradesh India S

In this study investigation of trends in rainfall over subdivisions of Uttar Pradesh was carried out. In both subdivisions decrease in rainfall during monsoon and increase in summer season has been observed. However in both the subdivisions in second three decades increased in rainfall has been found during post monsoon. In West subdivision there was increase during second three (1957-1986) decades in monsoon season which decreased in current three decades (1987-2016). However in East subdivision continues decrease in rainfall has been noticed during monsoon season and during post monsoon decrease of 14 mm and 12 mm in rainfall was recorded, moreover in summer season increase of rainfall (4mm and 5mm) was noticed in East and West Uttar Pradesh respectively. No seasonal significant trend in rainfall was noticed in both the subdivisions. As far as monthly analysis concern there was increase in rainfall (4-5mm) in the month of May and June. In East Uttar Pradesh January, February, March, July, August, September, October, November and December months recorded decrease in rainfall and February and April remained constant. Similarly in West Uttar Pradesh January, April, August, July, September, October and November recorded decrease in rainfall and February, March and April remained unchanged.