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- W4236824709 abstract "Abstract. In Canada, increased risk of flooding due to heavy rainfall has risen in recent decades; most notable example include July 2013 storm in Greater Toronto region. We investigate nonstationarity and trends in the short-duration precipitation extremes in selected urbanized locations in Southern Ontario, Canada, and evaluate the potential of nonstationary Intensity-Duration-Frequency (IDF) curves, which form an input to civil infrastructural design. Despite apparent signals of nonstationarity in precipitation extremes in all locations, the stationary versus nonstationary models do not exhibit any significant differences in the design storm intensity. The signatures of nonstationarity in rainfall extremes do not necessarily imply the use of nonstationary IDFs for design considerations. When comparing the proposed IDFs with current design standards, for return periods (10-year or less) typical for urban drainage design, current design standards require an update up to 11 %, whereas for longer recurrence intervals (50–100-year), ideal for critical civil infrastructural design, updates ranging between ~ 2 to 30 % are suggested. We further emphasize that above findings need re-evaluation in light of climate change projections since intensity and frequency of extreme precipitation are expected to intensify due to global warming." @default.
- W4236824709 created "2022-05-12" @default.
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- W4236824709 date "2017-06-12" @default.
- W4236824709 modified "2023-09-26" @default.
- W4236824709 title "Does Nonstationarity in Rainfall Requires Nonstationary Intensity-Duration-Frequency Curves?" @default.
- W4236824709 doi "https://doi.org/10.5194/hess-2017-325" @default.
- W4236824709 hasPublicationYear "2017" @default.
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