Potential Impact of Climate Change on Rainfall Extremes for Urban Drainage Management

被引：0
|
作者：
Patowary, S. [1 ]
Hazarika, J. [1 ]
Sarma, A. K. [1 ]
机构：
[1] IIT Guwahati, Dept Civil Engn, Gauhati 781039, India
来源：
URBANIZATION CHALLENGES IN EMERGING ECONOMIES: ENERGY AND WATER INFRASTRUCTURE; TRANSPORTATION INFRASTRUCTURE; AND PLANNING AND FINANCING | 2018年
关键词：
MODEL OUTPUT; CURVES; GIS;
D O I：
暂无
中图分类号：
F0 [经济学]; F1 [世界各国经济概况、经济史、经济地理]; C [社会科学总论];
学科分类号：
0201 ; 020105 ; 03 ; 0303 ;
摘要：
Rapid urbanization in developing cities like Guwahati imposes significant changes in hydrological characteristics, causing frequent flash floods, and water logging, which are further enhanced by impact of the changing climate. Hence, there is an urgent need of incorporating climate change impacts in design of urban drainage structures. In this study, future precipitation of Guwahati has been forecasted for the period 2006-2100 for GCM models ESM2G and ESM2M, considering RCP8.5 scenario. IDF curves were generated using these predicted rainfall series. Rainfall intensities for both models were found to be higher than that of observed data, ESM2G being the highest. The effect of this increase in intensity was analyzed on a mini-watershed in Fatasil Hill of Guwahati City. Under ESM2G and ESM2M, both peak discharge and sediment loss were found to be increasing from the watershed. This implies upgrading the drainage system, adapting climate change impacted discharge for hydraulic design.
引用
收藏
页码：256 / 266
页数：11
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