Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin
Probable maximum precipitation (PMP), is the highest rainfall, which occurs at a given time in a basin. Hydrologist calculates the probable maximum flood for the design of overflow dams, by using the PMP, with two methods: statistical and synoptic. The purpose of this study is calculating PMP in the...
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Kharazmi University
2018-03-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-2771-en.pdf |
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| author | Faranak Bahrami Abbas Ranjbar.s.a Ebrahim Fattahi |
| author_facet | Faranak Bahrami Abbas Ranjbar.s.a Ebrahim Fattahi |
| author_sort | Faranak Bahrami |
| collection | DOAJ |
| description | Probable maximum precipitation (PMP), is the highest rainfall, which occurs at a given time in a basin. Hydrologist calculates the probable maximum flood for the design of overflow dams, by using the PMP, with two methods: statistical and synoptic. The purpose of this study is calculating PMP in the Ghomrood basin by using the synoptic method. For this purpose rain, meteorological data of the Iran’s Meteorological Organization were used. Also, the data on the 850 and 500 hPa levels were analyzed by the National Center for Environmental Prediction and the National Center for Atmospheric Research (NCEP-NCAR). In the following, the required synoptic maps produced and were studied. Iso rain maps were drawn, and depth-area-duration curves were determined. Eventually, PMP was estimated at 24, 48 and 72 hours. So that 24 hours PMP, by calculating 50 and 100 years return period of dew point estimated 51/75 and 54 mm respectively. Also for 48 hours PMP 128/25 and 132/05 mm, and for 72 hours PMP 97/9 and 101/75 estimated. |
| format | Article |
| id | doaj-art-ef44df5140a646ed9102647d874a5c59 |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2018-03-01 |
| publisher | Kharazmi University |
| record_format | Article |
| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-ef44df5140a646ed9102647d874a5c592025-01-31T17:24:38ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382018-03-0118506175Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood BasinFaranak Bahrami0Abbas Ranjbar.s.a1Ebrahim Fattahi2 Meteorological Institute Meteorological Institute Meteorological Institute Probable maximum precipitation (PMP), is the highest rainfall, which occurs at a given time in a basin. Hydrologist calculates the probable maximum flood for the design of overflow dams, by using the PMP, with two methods: statistical and synoptic. The purpose of this study is calculating PMP in the Ghomrood basin by using the synoptic method. For this purpose rain, meteorological data of the Iran’s Meteorological Organization were used. Also, the data on the 850 and 500 hPa levels were analyzed by the National Center for Environmental Prediction and the National Center for Atmospheric Research (NCEP-NCAR). In the following, the required synoptic maps produced and were studied. Iso rain maps were drawn, and depth-area-duration curves were determined. Eventually, PMP was estimated at 24, 48 and 72 hours. So that 24 hours PMP, by calculating 50 and 100 years return period of dew point estimated 51/75 and 54 mm respectively. Also for 48 hours PMP 128/25 and 132/05 mm, and for 72 hours PMP 97/9 and 101/75 estimated.http://jgs.khu.ac.ir/article-1-2771-en.pdfpmpghomrod basinstormsynoptic methodiran |
| spellingShingle | Faranak Bahrami Abbas Ranjbar.s.a Ebrahim Fattahi Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin تحقیقات کاربردی علوم جغرافیایی pmp ghomrod basin storm synoptic method iran |
| title | Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin |
| title_full | Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin |
| title_fullStr | Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin |
| title_full_unstemmed | Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin |
| title_short | Estimating Probable Maximum Precipitation Based on Synoptic Method in Ghomrood Basin |
| title_sort | estimating probable maximum precipitation based on synoptic method in ghomrood basin |
| topic | pmp ghomrod basin storm synoptic method iran |
| url | http://jgs.khu.ac.ir/article-1-2771-en.pdf |
| work_keys_str_mv | AT faranakbahrami estimatingprobablemaximumprecipitationbasedonsynopticmethodinghomroodbasin AT abbasranjbarsa estimatingprobablemaximumprecipitationbasedonsynopticmethodinghomroodbasin AT ebrahimfattahi estimatingprobablemaximumprecipitationbasedonsynopticmethodinghomroodbasin |