Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province)
In this study to identify the synoptic patterns causing heavy rainfall in East Azarbaijan province used with Environment- circulation pattern. Thus, beginning with the use of statistical methods limit type with return periods of ten-thousand-year, precipitation index for the 9 synoptic stations and...
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| Format: | Article |
| Language: | fas |
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University of Tabriz
2015-04-01
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| Series: | نشریه جغرافیا و برنامهریزی |
| Subjects: | |
| Online Access: | https://geoplanning.tabrizu.ac.ir/article_3438_e3c3e33d03582866a3d201042f344977.pdf |
| _version_ | 1827314201113133056 |
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| author | Saeed Jahahnbakhsh Asl Hamid Mirhashemi Masoomeh Tadayyon |
| author_facet | Saeed Jahahnbakhsh Asl Hamid Mirhashemi Masoomeh Tadayyon |
| author_sort | Saeed Jahahnbakhsh Asl |
| collection | DOAJ |
| description | In this study to identify the synoptic patterns causing heavy rainfall in East Azarbaijan province used with Environment- circulation pattern. Thus, beginning with the use of statistical methods limit type with return periods of ten-thousand-year, precipitation index for the 9 synoptic stations and climatology located at the province was determined and finally 25 days was analyzed as day's high Heavy. The clustering of the 1000 hPa geopotential height level these days, were identified three patterns of spring cyclone, deformation and winter cyclone as the creator of this precipitation patterns. Synoptic analysis of this patterns showed that the low pressure at polar latitudes move to down and troughs on the Mediterranean and the Middle East that it has spread. Next to the tropical high pressure and subsequent ridge are moved to higher latitudes. There are conditions in the planetary patterns, increased temperature and pressure gradient zonal and meridional circulation of establishing Cut-off low and blocking high system is in the region. Research area within the affected system has been up and down simultaneously. Thermodynamic analysis using data from the radio station of Tabriz probe showed that the potential instability in the event of heavy rain on the atmospheric vertical profile has prevailed. In fact, because the study area in this period of low and high latitudes is dominated systems and the systems at different height levels of temperature and humidity differences are great together, a stratification of temperature, moisture in the atmosphere will be created and established conditions of potential instability |
| first_indexed | 2024-04-24T22:30:41Z |
| format | Article |
| id | doaj.art-9f60033515ca497884ad8859bf35a3b3 |
| institution | Directory Open Access Journal |
| issn | 2008-8078 2717-3534 |
| language | fas |
| last_indexed | 2024-04-24T22:30:41Z |
| publishDate | 2015-04-01 |
| publisher | University of Tabriz |
| record_format | Article |
| series | نشریه جغرافیا و برنامهریزی |
| spelling | doaj.art-9f60033515ca497884ad8859bf35a3b32024-03-19T21:54:25ZfasUniversity of Tabrizنشریه جغرافیا و برنامهریزی2008-80782717-35342015-04-0119511071253438Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province)Saeed Jahahnbakhsh Asl0Hamid Mirhashemi1Masoomeh Tadayyon2Professor, Department of Climatology, University of TabrizPh.D. Student, Department of Climatology, University of TabrizAcademic Member, Islamic Azad University, Semnan BranchIn this study to identify the synoptic patterns causing heavy rainfall in East Azarbaijan province used with Environment- circulation pattern. Thus, beginning with the use of statistical methods limit type with return periods of ten-thousand-year, precipitation index for the 9 synoptic stations and climatology located at the province was determined and finally 25 days was analyzed as day's high Heavy. The clustering of the 1000 hPa geopotential height level these days, were identified three patterns of spring cyclone, deformation and winter cyclone as the creator of this precipitation patterns. Synoptic analysis of this patterns showed that the low pressure at polar latitudes move to down and troughs on the Mediterranean and the Middle East that it has spread. Next to the tropical high pressure and subsequent ridge are moved to higher latitudes. There are conditions in the planetary patterns, increased temperature and pressure gradient zonal and meridional circulation of establishing Cut-off low and blocking high system is in the region. Research area within the affected system has been up and down simultaneously. Thermodynamic analysis using data from the radio station of Tabriz probe showed that the potential instability in the event of heavy rain on the atmospheric vertical profile has prevailed. In fact, because the study area in this period of low and high latitudes is dominated systems and the systems at different height levels of temperature and humidity differences are great together, a stratification of temperature, moisture in the atmosphere will be created and established conditions of potential instabilityhttps://geoplanning.tabrizu.ac.ir/article_3438_e3c3e33d03582866a3d201042f344977.pdfheavy rainspotential instabilityeast azarbaijandeformationcyclone |
| spellingShingle | Saeed Jahahnbakhsh Asl Hamid Mirhashemi Masoomeh Tadayyon Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province) نشریه جغرافیا و برنامهریزی heavy rains potential instability east azarbaijan deformation cyclone |
| title | Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province) |
| title_full | Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province) |
| title_fullStr | Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province) |
| title_full_unstemmed | Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province) |
| title_short | Synoptic and Thermodynamic Analysis, the Heavy in North West of Iran (East Azarbaijan Province) |
| title_sort | synoptic and thermodynamic analysis the heavy in north west of iran east azarbaijan province |
| topic | heavy rains potential instability east azarbaijan deformation cyclone |
| url | https://geoplanning.tabrizu.ac.ir/article_3438_e3c3e33d03582866a3d201042f344977.pdf |
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