Dryspell Analysis Using Gridded Rainfall Data For Telangana

The study analyzes the spatial and temporal patterns of dry spells in Telangana using gridded
rainfall data spanning 1961 to 2015. The analysis employs the Mann-Kendall test to identify
trends in dry spell occurrences and their lengths. Results indicate considerable spatial
variability, with southwestern and southern districts experiencing the longest and most severe
dry spells, while northeastern and eastern districts encounter shorter durations. Although
most locations exhibit a non-significant trend towards reduced dry spell lengths, higher
elevation areas such as Vikarabad and Rangareddy show a significant decrease, highlighting
the critical role of topography in influcing dry spell patterns. The study underscores the
challenges including limitations of using gridded rainfall data, topographical complexities,
and variability in defining dry spell thresholds, all of which affect the accuracy of results.
Despite the challenges the research makes key contributions by providing a detailed regional
analysis of dry spells and identifying critical zones of vulnerability. The study also highlights
the critical need for regional-scale analysis to accurately assess local impacts and develop
adaptive strategies tailored to the specific climatic and geographic conditions of different
districts. Future research should incorporate recent data, consider climate change impacts,
and integrate socio-economic factors to provide a holistic understanding of dry spell
implications in Telangana.