Projection of rainfall intensity-duration-frequency curves at ungauged location under climate change scenarios

It is vital to quantify the changes in IDF relationship due climate change for designing climate-resilient urban hydraulic structures. Such projections are also important ungauged locations possible expansion or human settlements. This work proposed a method curve construction with associated uncertainty at under scenarios, considering peninsular Malaysia as case study. The bias Global Satellite Mapping of Precipitation Gauge Calibrated (GSMaP_GC) data was estimated by comparing its observed curve. Daily rainfall simulations four global models (GCMs), most suitable study area, were employed approximate alterations future distribution radiative concentration pathways (RCPs). results revealed intensity -3.4 − 26.7% during 2010−2039, -0.1 34.5% 2040−2069 and -4.3 96.8% 2070−2099 compared base period 1971−2000 different RCPs. Overall, pronounced short-duration high-duration rainfall. Also, higher emission scenarios showed greater than lower scenarios. range wider smaller short-duration. far future.