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Trend Analysis of Drought Events Over the Sirohi District in Western Rajasthan of India
The present study aims to assess the drought trends, seasonal and annual rainfall patterns at multiple time scales using Mann–Kendall and Sen’s slope estimator over the Sirohi district of western Rajasthan, India, as this district is experiencing severe drought conditions due to a lack of annual rainfall and high variability. The Standardized Precipitation Index (SPI) is used to assess the drought pattern in the Sirohi district on monthly, seasonal, and annual time scales. The monthly time scales of SPI-3, SPI-6, SPI-9, and SPI-12, as well as the seasonal time scales of winter, pre-monsoon, southwest monsoon, and post-monsoon, are used to estimate drought using SPI for 102 years (1901–2002). The long-term series of monthly rainfall data from 33 stations from 1901 to 2021 (120 years) is used for this purpose. The spatial variation of positive and negative trends, as well as the findings of the trend analysis at different time scales, has been worked out. The drought pattern will be shown by analyzing SPI time series trends at each station in the study region. Drought trend analysis based on the SPI is proven to be more sensitive to different time scales. The findings show that rainfall in the study region is decreasing insignificantly throughout the winter, pre-monsoon, and s-w monsoon seasons. In addition, the result shows that all the time scales are capable of detecting rainfall regimes in the study region. This sort of drought regional trend analysis might aid the Sirohi district administration’s decision-makers in planning and managing existing water resources to fulfill the demands of agricultural and drinking water for the people in the study area.
Trend Analysis of Drought Events Over the Sirohi District in Western Rajasthan of India
The present study aims to assess the drought trends, seasonal and annual rainfall patterns at multiple time scales using Mann–Kendall and Sen’s slope estimator over the Sirohi district of western Rajasthan, India, as this district is experiencing severe drought conditions due to a lack of annual rainfall and high variability. The Standardized Precipitation Index (SPI) is used to assess the drought pattern in the Sirohi district on monthly, seasonal, and annual time scales. The monthly time scales of SPI-3, SPI-6, SPI-9, and SPI-12, as well as the seasonal time scales of winter, pre-monsoon, southwest monsoon, and post-monsoon, are used to estimate drought using SPI for 102 years (1901–2002). The long-term series of monthly rainfall data from 33 stations from 1901 to 2021 (120 years) is used for this purpose. The spatial variation of positive and negative trends, as well as the findings of the trend analysis at different time scales, has been worked out. The drought pattern will be shown by analyzing SPI time series trends at each station in the study region. Drought trend analysis based on the SPI is proven to be more sensitive to different time scales. The findings show that rainfall in the study region is decreasing insignificantly throughout the winter, pre-monsoon, and s-w monsoon seasons. In addition, the result shows that all the time scales are capable of detecting rainfall regimes in the study region. This sort of drought regional trend analysis might aid the Sirohi district administration’s decision-makers in planning and managing existing water resources to fulfill the demands of agricultural and drinking water for the people in the study area.
Trend Analysis of Drought Events Over the Sirohi District in Western Rajasthan of India
Lecture Notes in Civil Engineering
Timbadiya, P. V. (Herausgeber:in) / Singh, Vijay P. (Herausgeber:in) / Sharma, Priyank J. (Herausgeber:in) / Mehta, Darshan J. (Autor:in) / Yadav, S. M. (Autor:in)
International Conference on Hydraulics, Water Resources and Coastal Engineering ; 2021
24.05.2023
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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