CHANGE POINT DETECTION AND TREND ANALYSIS OF MONTHLY, SEASONAL AND ANNUAL RAINFALL SERIES OVER THE MYSORE DISTRICT, KARNATAKA Authors: Naveenkumar R , STAVELIN ABHINANDITHE K* AND VIDYA R
ABSTRACT
Climate change has become a worldwide issue in recent decades. Climate change refers to
changes in the earth's environmental factors. This is due to a multitude of internal as well as
external variables. Rainfall is an important weather factor in climate change. Analyzing rainfall
changes is an important step in determining the impact of climate change on water availability
and food security. The purpose of the present study is to evaluate rainfall data to identify
patterns and moments of trend change. Monthly, seasonal, and annual rainfall information was
collected for the Mysore district of Karnataka, India, from a period of 2006 to 2019. Mann-
Kendall and Sen’s Slope tests were used for analyzing annual rainfall data. Changes were
observed for annual rainfall statistics which were obtained using a change point detection test.
The mean monthly rainfall change point occurred in December 2012, August and November
2017 at the confidence level of 94%, 95% and 94% at levels 3, 1 and 2 respectively.
Keywords: Temperature, Rainfall, Trend analysis, Change point detection, Mann-
Kendall, Sen’s slope Publication date: 01/07/2024 https://ijbpas.com/pdf/2024/July/MS_IJBPAS_2024_8075.pdfDownload PDFhttps://doi.org/10.31032/IJBPAS/2024/13.7.8075