Nowadays there is an increase in the utilization of satellite-based precipitation products which makes it crucial to examine the accuracy of such products. The current study aims at achieving the...
Fluctuations in the precipitation pattern often tend to have an impact on the availability of water making it necessary to explore the spatiotemporal variations in rainfall. This study explores the time series analysis of the rainfall from 1952 to 2019. The trend was analyzed using the modified Mann–Kendall test (MMK), and innovative trend analysis (ITA). The analysis showed that the northern region received the least rainfall while the southern region received the maximum rainfall all except one of the stations had a positive kurtosis. The kurtosis of the rainfall histogram ranges from −0.69 to 24.13. The trend was very well defined by all the methods, though MMK z statistics showed more occurrences of significant changes in the rainfall. The northeast monsoon carried a significantly decreasing trend at Chikkanayakanahalli station where the z value of MMK and ITA_R test showed values of −1.33 and −2.23, respectively, while all of the significantly increasing trends were defined by the MMK test in the annual and southwest monsoon season. The homogeneity test was found to have the most correlation between Pettitt and Buishand test in comparison to SNHT. Later, ARIMA model was run for the precipitation to predict the rainfall value from 2019 to 2029.
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