Assessment of trends, variability and climatic change for the district Lahaul And Spiti of Himachal Pradesh
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Date
2021-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation was carried out to study the weather parameters viz. precipitation, maximum temperature and minimum temperature for the district Lahaul and Spiti of Himachal Pradesh over the period of 102 years (1901-2002). The data were collected from Indian Water Portal website www.indianwaterportal.org. The study's objectives were to look at trends, variability, and distribution fitting for weather parameters on an annual, seasonal, and monthly basis, and to use Microsoft Excel and IBM SPSS software to calculate different measures of statistics such as mean, skewness, kurtosis, standard deviation etc. to test the normality of weather parameters. The values of shows that the weather parameters did not follow normal distribution. A comparative study was made among the weather parameters by fitting a trend line by method of least squares to obtained best fitted straight line trend. Then studied the best fit distributions by using Easy Fit 5.5 Software. The study showed significant and insignificant increasing trends for winter and monsoon season’s precipitation, and insignificant increasing and decreasing trends for pre-monsoon and post-monsoon seasons precipitation, whereas annual & monthly precipitation showed insignificant increasing trends. For maximum and minimum temperatures, premonsoon seasons showed significant increasing trends while winter, monsoon and postmonsoon seasons showed significant decreasing trends. Annual maximum and minimum temperatures showed significant increasing trends. Monthly maximum and minimum temperatures also showed significant increasing trends.