The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM)
Due to the long distance from moisture sources and having more radiation exposure, the rate of evapotranspiration in dry regions is more than the annual precipitation. Evapotranspiration rates have proved to be good indicators in estimating the severity of aridity in a region. because of the lesse...
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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_181_e78373992fc3f13825d2e3b6c80e3e8f.pdf?lang=en |
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| author | Taghi Tavoosi Mohammadreza Mansouri Daneshvar Alireza Movaqqari |
| author_facet | Taghi Tavoosi Mohammadreza Mansouri Daneshvar Alireza Movaqqari |
| author_sort | Taghi Tavoosi |
| collection | DOAJ |
| description | Due to the long distance from moisture sources and having more radiation exposure, the rate of evapotranspiration in dry regions is more than the annual precipitation. Evapotranspiration rates have proved to be good indicators in estimating the severity of aridity in a region. because of the lesser errors of this method and the lack of recorded climatic parameters in many synoptic stations in Iran, In this study the Hargreaves – Samani method has been used to evaluate the evapotranspiration for 48 synoptic stations in Iran to calculate the evapotranspiration. Then, the spatial analysis was done based on DEM in GIS environment to produce the evapotranspiration maps. Finally, the results integrated to produce the zonation map of intensity aridity in Iran. The results in seasonal and monthly scale showed that the intensity of evapotranspiration was acceptable in conformity with dominated air masses during different seasons in Iran. The Combination of the produced evapotranspiration maps for mean scale of 12 months in 30 years time period revealed that all of the different regions of iran are located in the dry climatic condition since in all of these regions evapotranspiration rate is more than rainfall at least in three months of a year. The accuracy of the results with more intensity is confirmed in the northern and southern coasts of the country and for the central plateau of Iran. |
| format | Article |
| id | doaj-art-13825679cfbc4667959ab0dd94f6bfdf |
| 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-13825679cfbc4667959ab0dd94f6bfdf2025-02-03T13:45:01ZfasRazi Universityجغرافیا و پایداری محیط2322-31972676-56832012-11-012395110The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM)Taghi Tavoosi Mohammadreza Mansouri Daneshvar Alireza MovaqqariDue to the long distance from moisture sources and having more radiation exposure, the rate of evapotranspiration in dry regions is more than the annual precipitation. Evapotranspiration rates have proved to be good indicators in estimating the severity of aridity in a region. because of the lesser errors of this method and the lack of recorded climatic parameters in many synoptic stations in Iran, In this study the Hargreaves – Samani method has been used to evaluate the evapotranspiration for 48 synoptic stations in Iran to calculate the evapotranspiration. Then, the spatial analysis was done based on DEM in GIS environment to produce the evapotranspiration maps. Finally, the results integrated to produce the zonation map of intensity aridity in Iran. The results in seasonal and monthly scale showed that the intensity of evapotranspiration was acceptable in conformity with dominated air masses during different seasons in Iran. The Combination of the produced evapotranspiration maps for mean scale of 12 months in 30 years time period revealed that all of the different regions of iran are located in the dry climatic condition since in all of these regions evapotranspiration rate is more than rainfall at least in three months of a year. The accuracy of the results with more intensity is confirmed in the northern and southern coasts of the country and for the central plateau of Iran.https://ges.razi.ac.ir/article_181_e78373992fc3f13825d2e3b6c80e3e8f.pdf?lang=enevapotranspirationaridity zonation of iranhargreaves-samani modeldemgis |
| spellingShingle | Taghi Tavoosi Mohammadreza Mansouri Daneshvar Alireza Movaqqari The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM) جغرافیا و پایداری محیط evapotranspiration aridity zonation of iran hargreaves-samani model dem gis |
| title | The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM) |
| title_full | The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM) |
| title_fullStr | The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM) |
| title_full_unstemmed | The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM) |
| title_short | The Zonation of Aridity Intensity in Iran Using Hargreaves- Samani Evapotranspiration Model Based on Digital Elevation Model (DEM) |
| title_sort | zonation of aridity intensity in iran using hargreaves samani evapotranspiration model based on digital elevation model dem |
| topic | evapotranspiration aridity zonation of iran hargreaves-samani model dem gis |
| url | https://ges.razi.ac.ir/article_181_e78373992fc3f13825d2e3b6c80e3e8f.pdf?lang=en |
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