Trend Analysis of Rain Precipitation for Indian States using 1901-2020 IMD dataset

Abstract

This study explores the greatest yearly precipitation pattern utilizing the Mann-Kendall test and Sen’s slope strategy and assesses the importance of variability utilizing precipitation of all Indian weather stations followed by spectral analysis. The information of these weather conditions stations from 1901 to 2020 was utilized. Original Mann-Kendall test, Modified Mann-Kendall test using Pre-Whitening method, Correlated Seasonal Mann-Kendall test and Sen’s slope test were applied to identify homogeneity in the information and detected the behaviour of the signal by using spectral analysis. Besides, the critical negative pattern was recorded for overall annual precipitation in some of the regions of North India. In view of the discoveries of progress identification, the most probable year of progress recognition happened principally after 1960 for a huge part of rainfall stations. The rising precipitation pattern was seen between the tenure 1901-1970 while a huge decay in precipitation was seen after 1980. The outcomes from this pattern re-analysis information show that expanding or diminishing precipitation convective rate raised low effect and insufficient in an upward direction coordinated dissimilarity. Discoveries of the review consider the availability of rainfall assets and expansion later on water interest. Also, the resultant spectral signal shows a high peak at Yunnan which is located in Kerala.