Maximum temperature trend analysis of West Bengal from 1951-2015

Abstract

Abstract Right now Climate change is a global issue. Continuous rising of global temperatures has received a lot of attention from researchers as its directly impact on the Major Water resources sector, Minor Water Resources (Domestic & Industrial uses), agricultural sector. Trends in climate changing scenarios is very important. So, just to understand the trend of temperature or to find maximum temperature patterns, we use innovative trend analysis techniques (ITAM) for this study. Most trend analyzes are based on overall time periods, and recent temperature changes related to overall time periods have not been investigated. Current work shows that values from two different time zones give different results. For this work we are using gridded data acquired from the Indian Meteorological Department (IMD) over a period of 65 years (1951-2015) with a overlapping year of 1983 to find the graph of for 1st half and 2nd half, seasonal extreme temperature changes of 14 grid points covering thirteen district including part of Bay of Bengal (Sundarban region) in West Bengal were analyzed. After analyzing the entire period, we found that Tmax showing negative downward pattern in winter and pre-monsoon seasons. The magnitude of slope of the gridded value is very high in winter and pre-monsoon seasons which indicates a negative pattern. After the analysis by using ITAM we found that the recent trends of Maximum temperature is more indicating with high magnitude of Slope. Keywords :Gridded; Maximum Temperature ; Innovative Trend Analysis