Assessment of trends and variability of precipitation and temperature for Chandigarh
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Date
2019-06
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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 Chandigarh over the period of 102 years (1901-2002). The data were collected from Indian Water Portal website
www.indianwaterportal.org. The objectives of the study were to analyze the trends, variability and distribution fitting for weather parameters on annual, seasonal and monthly basis. Different measures of statistics viz. mean, standard deviation, skewness, kurtosis, etc. were calculated to test the normality of weather parameters by using Microsoft Excel and IBM SPSS 16.0. The values of γ1≠0, β2≠3, 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 using the method of least squares to obtained best-fitted trend line. The study of best fit distribution was carried out by using EasyFit 5.5 software. The study showed significant increasing trends for winter and monsoon seasons precipitation whereas annual, monthly, premonsoon season and post-monsoon season precipitation showed insignificant increasing and decreasing trends. For maximum and minimum temperatures, winter and pre-monsoon seasons showed significant increasing trends while monsoon and post-monsoon seasons showed significant decreasing trends. Annual minimum temperature showed significant increasing trend whereas annual maximum temperature showed insignificant increasing trend. Monthly minimum and maximum temperatures showed insignificant increasing trends.
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