Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data
Aerosol optical depth in 550 nm and angstrom exponent measurements with MODIS have been studied with 1-degree resolution for the period 2006-2017 in the middle east. Moreover, tropospheric aerosol optical depth and depolarization ratios measured at 532 nm with CALIOP have been studied for same area...
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Kharazmi University
2023-09-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-3569-en.pdf |
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| author | Ruhallah Moradhaseli Ali Bayat Fateme Radmehri |
| author_facet | Ruhallah Moradhaseli Ali Bayat Fateme Radmehri |
| author_sort | Ruhallah Moradhaseli |
| collection | DOAJ |
| description | Aerosol optical depth in 550 nm and angstrom exponent measurements with MODIS have been studied with 1-degree resolution for the period 2006-2017 in the middle east. Moreover, tropospheric aerosol optical depth and depolarization ratios measured at 532 nm with CALIOP have been studied for same area and same period of time too. These parameters have been classified seasonally. Optical depth results show high values for the region especially in spring and summer seasons. During the cold seasons, optical depth values are much less compared with their values at warm seasons. At spring, dust sources located in northern Iraq and those located in central and northern parts of Arabian Peninsula are much more active. Sources located in southern parts of Arabian Peninsula get more active by summer. Angstrom exponent results show that in arid and semi-arid parts of middle east, aerosol sizes are mainly in coarse mode. In arid parts of Iraq and Arabian Peninsula coarse mode particles are dominant during 4 seasons, but for arid parts inside Iran coarse mode is dominant during warm seasons and a modification in suspended particle sizes can be seen during cold seasons. Depolarization measurements of CALIOP show that almost in all seasons, non-spherical particles are ready in middle east atmosphere which is usual for an area inside the dust belt. |
| format | Article |
| id | doaj-art-7c191049346d498e91b67419b7b09493 |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2023-09-01 |
| publisher | Kharazmi University |
| record_format | Article |
| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-7c191049346d498e91b67419b7b094932025-01-31T17:30:18ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382023-09-012370143156Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS dataRuhallah Moradhaseli0Ali Bayat1Fateme Radmehri2 Assistant Professor, azad islamic University of Zanjan Assistant Professor, University of Zanjan MSc, University of Zanjan Aerosol optical depth in 550 nm and angstrom exponent measurements with MODIS have been studied with 1-degree resolution for the period 2006-2017 in the middle east. Moreover, tropospheric aerosol optical depth and depolarization ratios measured at 532 nm with CALIOP have been studied for same area and same period of time too. These parameters have been classified seasonally. Optical depth results show high values for the region especially in spring and summer seasons. During the cold seasons, optical depth values are much less compared with their values at warm seasons. At spring, dust sources located in northern Iraq and those located in central and northern parts of Arabian Peninsula are much more active. Sources located in southern parts of Arabian Peninsula get more active by summer. Angstrom exponent results show that in arid and semi-arid parts of middle east, aerosol sizes are mainly in coarse mode. In arid parts of Iraq and Arabian Peninsula coarse mode particles are dominant during 4 seasons, but for arid parts inside Iran coarse mode is dominant during warm seasons and a modification in suspended particle sizes can be seen during cold seasons. Depolarization measurements of CALIOP show that almost in all seasons, non-spherical particles are ready in middle east atmosphere which is usual for an area inside the dust belt.http://jgs.khu.ac.ir/article-1-3569-en.pdfdustcaliopmodisoptical depthdepolarization ratioangstrom exponentmiddle east |
| spellingShingle | Ruhallah Moradhaseli Ali Bayat Fateme Radmehri Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data تحقیقات کاربردی علوم جغرافیایی dust caliop modis optical depth depolarization ratio angstrom exponent middle east |
| title | Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data |
| title_full | Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data |
| title_fullStr | Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data |
| title_full_unstemmed | Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data |
| title_short | Study of seasonal distribution of dust in the Middle East region using CALIOP and MODIS data |
| title_sort | study of seasonal distribution of dust in the middle east region using caliop and modis data |
| topic | dust caliop modis optical depth depolarization ratio angstrom exponent middle east |
| url | http://jgs.khu.ac.ir/article-1-3569-en.pdf |
| work_keys_str_mv | AT ruhallahmoradhaseli studyofseasonaldistributionofdustinthemiddleeastregionusingcaliopandmodisdata AT alibayat studyofseasonaldistributionofdustinthemiddleeastregionusingcaliopandmodisdata AT fatemeradmehri studyofseasonaldistributionofdustinthemiddleeastregionusingcaliopandmodisdata |