Predicting Last Spring Freezing Day in West and Northwest of Iran
In this paper we try to predict last freezing day of spring for 17 meteorological stations in west and northwest of Iran by Artificial Neural Networks. The method used to do so was the back propagation method. Climatologic data included first day of freezing, minimum absolute temperature in the last...
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| Format: | Article |
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Razi University
2012-11-01
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| Series: | جغرافیا و پایداری محیط |
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| Online Access: | https://ges.razi.ac.ir/article_179_784908a0003a6fa4d37e328400a0ed89.pdf?lang=en |
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| _version_ | 1832542894756462592 |
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| author | Hasan Zolfaghari Gholamreza Zahedi Tayebe Sajjadifar |
| author_facet | Hasan Zolfaghari Gholamreza Zahedi Tayebe Sajjadifar |
| author_sort | Hasan Zolfaghari |
| collection | DOAJ |
| description | In this paper we try to predict last freezing day of spring for 17 meteorological stations in west and northwest of Iran by Artificial Neural Networks. The method used to do so was the back propagation method. Climatologic data included first day of freezing, minimum absolute temperature in the last day of freezing, humidity at 3 o’clock (GMT) in the last day of freezing, average relative humidity in the last day, average pressure in the day before last day and cloudiness in the last day of freezing input the network, and the last day of freezing was output. Artificial neural networks could predict the last day of freezing for all 17 stations with an accepted error. Biggest errors in this work belong to Arak station with 1.1142 % and smallest errors belong to Mahabad station with 0.254 %. It was concluded that zonation of the religion based on accomplished prediction exposed effects of the both height and topography. |
| format | Article |
| id | doaj-art-59fb3c99d49a4f71a0dd6cc2e1fe4954 |
| institution | Kabale University |
| issn | 2322-3197 2676-5683 |
| language | fas |
| publishDate | 2012-11-01 |
| publisher | Razi University |
| record_format | Article |
| series | جغرافیا و پایداری محیط |
| spelling | doaj-art-59fb3c99d49a4f71a0dd6cc2e1fe49542025-02-03T13:39:48ZfasRazi Universityجغرافیا و پایداری محیط2322-31972676-56832012-11-01235974Predicting Last Spring Freezing Day in West and Northwest of IranHasan Zolfaghari Gholamreza Zahedi Tayebe SajjadifarIn this paper we try to predict last freezing day of spring for 17 meteorological stations in west and northwest of Iran by Artificial Neural Networks. The method used to do so was the back propagation method. Climatologic data included first day of freezing, minimum absolute temperature in the last day of freezing, humidity at 3 o’clock (GMT) in the last day of freezing, average relative humidity in the last day, average pressure in the day before last day and cloudiness in the last day of freezing input the network, and the last day of freezing was output. Artificial neural networks could predict the last day of freezing for all 17 stations with an accepted error. Biggest errors in this work belong to Arak station with 1.1142 % and smallest errors belong to Mahabad station with 0.254 %. It was concluded that zonation of the religion based on accomplished prediction exposed effects of the both height and topography.https://ges.razi.ac.ir/article_179_784908a0003a6fa4d37e328400a0ed89.pdf?lang=enartificial neural networkslast freezing daypredictionwest and northwest of iran |
| spellingShingle | Hasan Zolfaghari Gholamreza Zahedi Tayebe Sajjadifar Predicting Last Spring Freezing Day in West and Northwest of Iran جغرافیا و پایداری محیط artificial neural networks last freezing day prediction west and northwest of iran |
| title | Predicting Last Spring Freezing Day in West and Northwest of Iran |
| title_full | Predicting Last Spring Freezing Day in West and Northwest of Iran |
| title_fullStr | Predicting Last Spring Freezing Day in West and Northwest of Iran |
| title_full_unstemmed | Predicting Last Spring Freezing Day in West and Northwest of Iran |
| title_short | Predicting Last Spring Freezing Day in West and Northwest of Iran |
| title_sort | predicting last spring freezing day in west and northwest of iran |
| topic | artificial neural networks last freezing day prediction west and northwest of iran |
| url | https://ges.razi.ac.ir/article_179_784908a0003a6fa4d37e328400a0ed89.pdf?lang=en |
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