Extraction of Intensity-Duration-Frequency (IDF) Curves Under Climate Change, Case study: Isfahan Synoptic Station

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SAFAVI H.R.; Dadjou SH.; NAEIMI G.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2019 | Volume:15 | Issue:2 Page(s): 217-227

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Title

Extraction of Intensity-Duration-Frequency (IDF) Curves Under Climate Change, Case study: Isfahan Synoptic Station

Author(s)

SAFAVI H.R. | Dadjou SH. | NAEIMI G. | Issue Writer Certificate

Keywords

Climate ChangeQ2

Intensity-Duration-Frequency CurvesQ1

Fractal TheoryQ1

Maximum Annual Precipitation IntensityQ1

Isfahan Synoptic StationQ1

Abstract

Many hydraulic structures are designed by using the design precipitation with return periods and duration based on concentration time. Therefore, and especially in regions without adequate rain gauge stations Intensity-Duration-Frequency (IDF) curves play a significant role in the design of dimensions and components of these structures. However, the precipitation patterns has changed in various regions of the world following Climate Change as a consequence of the increasing human activities. Therefore, the historical IDF curves are no longer reliable. In this study, IDF curves were developed for Isfahan meteorological synoptic station. Extraction of precipitation intensity with continuous shortterm 24-hour precipitation has been done by using Fractal Theory. In the present study, extractions of the IDF curves were divided into three periods: the historical period (1967-1993), the present period (1994-2016), and the future period (2017-2035). It was perceived that precipitation intensity with shortterm duration increased because of changes in the climatology and IDF curves are shifted upwards. In this study, to predict the daily precipitation weighted output 15 AOGCM models were used under the A2 emission scenario related to the Fourth Assessment Report (AR4) IPCC, as the most reliable tool. Results showed that the predicted IDF for future (2017-2035) will increase even over 52 percent related to past IDF (1967-1993) in this region.

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APA: Copy

SAFAVI, H.R., Dadjou, SH., & NAEIMI, G.. (2019). Extraction of Intensity-Duration-Frequency (IDF) Curves Under Climate Change, Case study: Isfahan Synoptic Station. IRAN-WATER RESOURCES RESEARCH, 15(2 ), 217-227. SID. https://sid.ir/paper/100242/en

Vancouver: Copy

SAFAVI H.R., Dadjou SH., NAEIMI G.. Extraction of Intensity-Duration-Frequency (IDF) Curves Under Climate Change, Case study: Isfahan Synoptic Station. IRAN-WATER RESOURCES RESEARCH[Internet]. 2019;15(2 ):217-227. Available from: https://sid.ir/paper/100242/en

IEEE: Copy

H.R. SAFAVI, SH. Dadjou, and G. NAEIMI, “Extraction of Intensity-Duration-Frequency (IDF) Curves Under Climate Change, Case study: Isfahan Synoptic Station,” IRAN-WATER RESOURCES RESEARCH, vol. 15, no. 2 , pp. 217–227, 2019, [Online]. Available: https://sid.ir/paper/100242/en

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