To evaluate trends in weather variables in Haryana using Mann Kendall test and Sen’s slope estimator

Abstract

Over the 35-year period from 1985 to 2020, an extensive analysis of rainfall and temperature trends across several cities in Haryana, including Hisar, Rewari, Ambala, Karnal, and Rohtak, was conducted. Hisar exhibited a significant yearly increase in May rainfall, while the monsoon season showed a non-significant decreasing trend. Rewari experienced notable rises in March rainfall but insignificant changes during monsoon, while Ambala saw an overall decrease in rainfall, particularly in September. Karnal indicated significant January rainfall increases but insignificant changes during monsoon. Rohtak displayed noteworthy reductions in February and August rainfall but insignificant changes during monsoon. Temperature trends varied across cities, with consistent increases observed in minimum temperatures and sporadic changes in maximum temperatures. Understanding these patterns is crucial for evaluating regional climate variations and devising appropriate adaptation strategies. This comprehensive research provides valuable insights into the complex interplay between rainfall and temperature dynamics, offering essential information for policymakers and stakeholders tasked with addressing climate change challenges in the Haryana region.