Impacts of Climate Variability on Urban Rainfall Extremes Using Statistical Analysis of Climatic Variables for Change Detection and Trend Analysis
Advances in geographical and environmental sciences, pp. 333–387
Abstract
Importance of extreme weather events under climate variability on design rainfall to design a hydraulic structure is very important to mitigate the risk of disasters. This study yields an approach to identify the changes in Intensity–Duration–Frequency (IDF) using statistical trend analysis and change detection test on climatic parameters of Raipur City, a capital of Chhattisgarh state in India. Extreme events are often described by their expected frequency of recurrence; hence frequency analysis of shorter duration (15 min) rainfall has been conceded using Gumbel’s Extreme Value-I distribution. The results of change-point analysis indicated a climate shift nearly in year 1993, that has been taken as standard change-point which has split the data series and three different periods. Results concluded the temperature was the main factor which was causing the effect of changing rainfall pattern in Raipur city. Frequency analysis results Intensity–Duration–Frequency (IDF) curve for Raipur city which was influenced by changing climate pattern in Raipur urban area. Design intensities of rainfall were corrected using results of trend analysis and change-point test. The result attributes the effect of urbanization, rapid development of industrial and commercial activity which altered natural ecology and environment in Raipur city.
Authors 5
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Affiliation as printed
Department of Engineering Geology and Hydrogeology, RWTH Aachen University, 52064, Aachen, Germany
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Affiliation as printed
Department of Engineering Geology and Hydrogeology, RWTH Aachen University, 52064, Aachen, Germany
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Affiliation as printed
Department of Engineering Geology and Hydrogeology, RWTH Aachen University, 52064, Aachen, Germany
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Chhattisgarh Swami Vivekanand Technical University
Affiliation as printed
Civil Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, Newai, Chhattisgarh, 491107, India
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National Environmental Engineering Research Institute
Affiliation as printed
Council of Scientific & Industrial Research, National Environmental Engineering Research Institute, Nagpur, 440020, India
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