Variability analysis of rainfall, temperature and rainy days of Pantnagar, Udham Singh Nagar district
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Date
2019-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Variability analysis of rainfall has been of great concern during the past century as well as today because of the consideration has been given to global climate change by the scientific community. The study of trends is very important for a country like India whose food security and economy are dependent on the timely availability of water such as 83% water used for agriculture sector, 12% for industrial sector and only 5% for domestic sector(source: MoWR, GOI, 2017-18). So the present study attempted to know the trend of rainfall, mean maximum temperature, mean minimum temperature and rainy days of Pantnagar for the period (1961-2018) and (1981-2018) Respectively. For this purpose, rainfall data have been collected from Agro-meteorological observatory, Norman E. Borlaug Crop Research Centre, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar Udham singh nagar district (Uttarakhand). Trends of rainfall parameters were analyzed using Mann-Kendall test, Sen’s slope test, multiple linear regression method. This study revealed that significant decreasing trend in Post-monsoon and winter rainfall have been observed at Pantnagar, whereas Pre-monsoon shows increasing trend of rainfall. Though, rainfall in the Premonsoon Season has increased significantly at 5% level of significance and there are also significant increasing trends in mean maximum temperature, mean minimum temperature and there is also significant trend in rainy days. The main aim of this study is to provide detailed knowledge of the rainfall regime in a smaller area such as an important prerequisite for agricultural planning and management, for this one should go for micro level climate data analysis
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