Modeling of spatio-temporal of albedo over Iran
The aim of this study is modeling spatiotemporal variations of albedo. This study was conducted using simultaneous effects of several components, such as wetness of surface layer of soil, cloudiness, topography and vegetation density (NDVI), using MEERA2 model with a resolution of 50 in 50 km during...
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Kharazmi University
2017-12-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-2874-en.pdf |
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| author | Zahra Hejazizadeh Meysam Toulabi Nejad Alireza Rahimi nasrin bazmi Atefeh Bosak |
| author_facet | Zahra Hejazizadeh Meysam Toulabi Nejad Alireza Rahimi nasrin bazmi Atefeh Bosak |
| author_sort | Zahra Hejazizadeh |
| collection | DOAJ |
| description | The aim of this study is modeling spatiotemporal variations of albedo. This study was conducted using simultaneous effects of several components, such as wetness of surface layer of soil, cloudiness, topography and vegetation density (NDVI), using MEERA2 model with a resolution of 50 in 50 km during 2000-2010 in Iran. The results of spatial analysis of albedo values in Iran showed that the highest value is in 44 to 45 degrees of east longitude about 2.8 to 3.3 and the lowest value of albedo is also in 52 to 53 degrees of east longitude, that is, the eastern slopes of the Zagros Mountains, have been recorded at 1 to 1.5 units. In terms of provincial rank, the largest albedo is about 0.25 units in Ilam province and the Fars province is ranked next about 0.24 units. The lowest amount of albedo also in the Gilan provinces and in next Mazandaran province are about 0.19 and 0.18 respectively. In addition, the results of temporal analysis in seasonal scale showed that the highest albedo in Iran in winter was 0.26 and its lowest amount was recorded in spring with 0.23 units. In general, according to the factors used, it can be said that the western and central parts of the country have a highest albedo, and the north and northwest regions of the country have a lowest albedo. |
| format | Article |
| id | doaj-art-a6336f2a821b4f279c1ec5d09bba5db1 |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2017-12-01 |
| publisher | Kharazmi University |
| record_format | Article |
| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-a6336f2a821b4f279c1ec5d09bba5db12025-01-31T17:24:06ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382017-12-011747117Modeling of spatio-temporal of albedo over IranZahra Hejazizadeh0Meysam Toulabi Nejad1Alireza Rahimi2nasrin bazmi3Atefeh Bosak4 Professor of climatology , kharazmi university phd student of climatology , kharazmi university Associate Professor, university of kashan phd student of climatology, NOOR AZAD university msc student of climatology, kharazmi university The aim of this study is modeling spatiotemporal variations of albedo. This study was conducted using simultaneous effects of several components, such as wetness of surface layer of soil, cloudiness, topography and vegetation density (NDVI), using MEERA2 model with a resolution of 50 in 50 km during 2000-2010 in Iran. The results of spatial analysis of albedo values in Iran showed that the highest value is in 44 to 45 degrees of east longitude about 2.8 to 3.3 and the lowest value of albedo is also in 52 to 53 degrees of east longitude, that is, the eastern slopes of the Zagros Mountains, have been recorded at 1 to 1.5 units. In terms of provincial rank, the largest albedo is about 0.25 units in Ilam province and the Fars province is ranked next about 0.24 units. The lowest amount of albedo also in the Gilan provinces and in next Mazandaran province are about 0.19 and 0.18 respectively. In addition, the results of temporal analysis in seasonal scale showed that the highest albedo in Iran in winter was 0.26 and its lowest amount was recorded in spring with 0.23 units. In general, according to the factors used, it can be said that the western and central parts of the country have a highest albedo, and the north and northwest regions of the country have a lowest albedo.http://jgs.khu.ac.ir/article-1-2874-en.pdfalbedospatio-temporal analysismerra2 modeliran. |
| spellingShingle | Zahra Hejazizadeh Meysam Toulabi Nejad Alireza Rahimi nasrin bazmi Atefeh Bosak Modeling of spatio-temporal of albedo over Iran تحقیقات کاربردی علوم جغرافیایی albedo spatio-temporal analysis merra2 model iran. |
| title | Modeling of spatio-temporal of albedo over Iran |
| title_full | Modeling of spatio-temporal of albedo over Iran |
| title_fullStr | Modeling of spatio-temporal of albedo over Iran |
| title_full_unstemmed | Modeling of spatio-temporal of albedo over Iran |
| title_short | Modeling of spatio-temporal of albedo over Iran |
| title_sort | modeling of spatio temporal of albedo over iran |
| topic | albedo spatio-temporal analysis merra2 model iran. |
| url | http://jgs.khu.ac.ir/article-1-2874-en.pdf |
| work_keys_str_mv | AT zahrahejazizadeh modelingofspatiotemporalofalbedooveriran AT meysamtoulabinejad modelingofspatiotemporalofalbedooveriran AT alirezarahimi modelingofspatiotemporalofalbedooveriran AT nasrinbazmi modelingofspatiotemporalofalbedooveriran AT atefehbosak modelingofspatiotemporalofalbedooveriran |