Investigating the Relationship Between Dust Event and Climate and Surface Factors in Khuzestan Province (2011-2019)
Khuzestan province is affected by dust storms. The purpose of this study is to identify the most significant climate and surface factors in the emission and transfer of dust in this province. By means of remote sensing data including MERRA-2, GLDAS as well as Aqua, the monthly average mass concen...
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| Main Authors: | , |
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| Format: | Article |
| Language: | fas |
| Published: |
I.R. of Iran Meteorological Organization
2022-09-01
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| Series: | Nīvār |
| Subjects: | |
| Online Access: | https://nivar.irimo.ir/article_168048_f43444279bf9f55e7680590d7777be09.pdf |
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| Summary: | Khuzestan province is affected by dust storms. The purpose of this study is to identify the most significant climate and surface factors in the emission and transfer of dust in this province. By means of remote sensing data including MERRA-2, GLDAS as well as Aqua, the monthly average mass concentration of surface dust, air column dust and climate and surface variables from 2011 to 2019 have been prepared and analyzed. The result revealed that the region with an average vegetation cover index of 0.15 is susceptible to wind erosion and local dust. Also the result demonstrated that the dust surface concentration and the dust column density declines from the southwest to the northeast of the region due to the increased distance from the cross-border dust sources and also the mountainous structure of the northeast. Analyzing of the annual distribution, showed a negative relationship between the dust surface mass concentration and vegetation, and also positive/negative relationship between dust column density and vegetation/ precipitation. In the monthly distribution of dust surface concentration and wind speed a positive correlation of 0.84 and 0.96 obtained, respectively. while negative correlation values of -0.84, -0.81, and -0.54 were found Respectively. Therefore, dust surface concentration has the highest correlation with climate factors, which indicate the impact of cross-border dust. Based on the results obtained, the annual distribution, showed a negative relationship with the dust surface concentration and vegetation. In addition, the relationship between dust column density and vegetation and precipitation showed negative and positive values, respectively. |
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| ISSN: | 1735-0565 2645-3347 |