Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index
The purpose of research is to rezoning the climate zones of the north east of Iran- located between 30° 35' to 38° 41'N and 56° 19' to 61° 16'E- based on the analysis of changes in the aridity index, in combination with other climatic parameters changes. Air temperature and preci...
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| Format: | Article |
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Iranian Scientific Association of Desert Management and Control (ISADMC)
2019-08-01
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| Series: | مدیریت بیابان |
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| Online Access: | http://www.jdmal.ir/article_36538_287e78cb6cef27523ed9e4a969b624ed.pdf |
| _version_ | 1811161580835962880 |
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| author | Taghi Tavosi faeze shoja Elaheh Asgari |
| author_facet | Taghi Tavosi faeze shoja Elaheh Asgari |
| author_sort | Taghi Tavosi |
| collection | DOAJ |
| description | The purpose of research is to rezoning the climate zones of the north east of Iran- located between 30° 35' to 38° 41'N and 56° 19' to 61° 16'E- based on the analysis of changes in the aridity index, in combination with other climatic parameters changes. Air temperature and precipitation parameters were provided in the scale of monthly average and annual over period time of 1990-2017. At first, the climate classification of the north east of Iran was revised by studying variations in precipitation, evapotranspiration and temperature and results were compared with the De Martonne and Köppen-Geiger climate classification. For analyzing the aridity status, trend of the above parameters in the form of UNEP index was tested using Mann-Kendall non-parametric method and Sen's slope estimator. Results indicated that applying of the aridity index, as a factor in improvement of the used pattern, caused the zoning of this method to be more precise than the previous methods. Therefore, the study area was classified into seven climatic groups, the zone Ac14 (Arid zone with cold winter and hot summer) with 39% and 9 stations, and Ec14 (Extremely-arid zone with cold winter and hot summer) with one station were the largest and smallest climate zones, respectively. Results of the Mann-Kendall test and trend line slope, for UNEP aridity index showed that the aridity and desertification intensity have increased in different parts of the area during 28 years. |
| first_indexed | 2024-04-10T06:16:37Z |
| format | Article |
| id | doaj.art-c510c0b565a64939b11788e4f115443a |
| institution | Directory Open Access Journal |
| issn | 2476-3985 2476-3721 |
| language | fas |
| last_indexed | 2024-04-10T06:16:37Z |
| publishDate | 2019-08-01 |
| publisher | Iranian Scientific Association of Desert Management and Control (ISADMC) |
| record_format | Article |
| series | مدیریت بیابان |
| spelling | doaj.art-c510c0b565a64939b11788e4f115443a2023-03-02T06:48:53ZfasIranian Scientific Association of Desert Management and Control (ISADMC)مدیریت بیابان2476-39852476-37212019-08-0171311713410.22034/jdmal.2019.3653836538Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity IndexTaghi Tavosi0faeze shoja1Elaheh Asgari2Professor in Climatology, Department of Physical Geography, University of Sistan and Baluchestan, Zahedan, IranPh.D. in Climatology, Department of Physical Geography, University of Sistan and Baluchestan, Zahedan, IranDepartment of Physical Geography, Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, IranThe purpose of research is to rezoning the climate zones of the north east of Iran- located between 30° 35' to 38° 41'N and 56° 19' to 61° 16'E- based on the analysis of changes in the aridity index, in combination with other climatic parameters changes. Air temperature and precipitation parameters were provided in the scale of monthly average and annual over period time of 1990-2017. At first, the climate classification of the north east of Iran was revised by studying variations in precipitation, evapotranspiration and temperature and results were compared with the De Martonne and Köppen-Geiger climate classification. For analyzing the aridity status, trend of the above parameters in the form of UNEP index was tested using Mann-Kendall non-parametric method and Sen's slope estimator. Results indicated that applying of the aridity index, as a factor in improvement of the used pattern, caused the zoning of this method to be more precise than the previous methods. Therefore, the study area was classified into seven climatic groups, the zone Ac14 (Arid zone with cold winter and hot summer) with 39% and 9 stations, and Ec14 (Extremely-arid zone with cold winter and hot summer) with one station were the largest and smallest climate zones, respectively. Results of the Mann-Kendall test and trend line slope, for UNEP aridity index showed that the aridity and desertification intensity have increased in different parts of the area during 28 years.http://www.jdmal.ir/article_36538_287e78cb6cef27523ed9e4a969b624ed.pdfcombined classification patternunep indextrend of desertificationmann-kendall non-parametric method |
| spellingShingle | Taghi Tavosi faeze shoja Elaheh Asgari Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index مدیریت بیابان combined classification pattern unep index trend of desertification mann-kendall non-parametric method |
| title | Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index |
| title_full | Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index |
| title_fullStr | Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index |
| title_full_unstemmed | Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index |
| title_short | Amendment of Climate Zones of the Northeastern Iran Based On a Combination of Changes in Aridity Index |
| title_sort | amendment of climate zones of the northeastern iran based on a combination of changes in aridity index |
| topic | combined classification pattern unep index trend of desertification mann-kendall non-parametric method |
| url | http://www.jdmal.ir/article_36538_287e78cb6cef27523ed9e4a969b624ed.pdf |
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