Scholarlink

<p>Dust storms frequently occur in arid and semi-arid regions around the globe and pose a serious environmental hazard. Environmental conditions, climate, vegetation, and human activities influence them. Researchers have identified land use and cover change as significant factors contributing to the increase in dust. This study aimed to identify local dust storm sources in southwestern Iran (Khuzestan province) due to long-term land use/cover changes and to model their dispersion and transport using the forward Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. In the first part of the study, Landsat images from 1984, 1992, 2002, and 2022 were used to produce land use/cover maps. Post-classification comparison was then applied to detect changes from 1984 to 2022. The change detection results over 38 years showed that local dust storms originated from the conversion of wetlands to agriculture and agriculture to rangeland, particularly in the southwestern area (south of Horolazim wetland) and the southern area (north of Shadegan wetland). Subsequently, the HYSPLIT model was used to perform dust feed-forward trajectory modelling from the detected dust storm centres for 365 days of 2022 at three elevation levels: 500, 1000, and 1500&#xa0;m. Researchers used the Aerosol optical depth product from the moderate resolution imaging spectroradiometer and air quality monitoring data to assess HYSPLIT performance. The modelling results showed that dust storms originating from the southwestern area (Horolazim) and the southern area (north of Shadegan wetland) affected over 90% of the study area (Khuzestan) and southern provinces of Iran within 24&#xa0;h of dust particle release, particularly during the hot season. Therefore, identifying areas with the most significant impact on incoming dust in southwestern Iran (Khuzestan) will help inform and guide planners and decision-makers in adopting appropriate measures. Focusing on national programs could be as valuable as international cooperation for mitigating and controlling dust storms in southwestern Iran.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Detection of internal dust storm centers and their transport and dispersion modelling in southwestern Iran

  • 期刊论文

  • 发表日期：

    2025年4月9日

查看全文
  • Faezeh Alizadeh,
  • Samereh Falahatkar,
  • Afsaneh Afzali,
  • Seyed Mohsen Mousavi

摘要

Dust storms frequently occur in arid and semi-arid regions around the globe and pose a serious environmental hazard. Environmental conditions, climate, vegetation, and human activities influence them. Researchers have identified land use and cover change as significant factors contributing to the increase in dust. This study aimed to identify local dust storm sources in southwestern Iran (Khuzestan province) due to long-term land use/cover changes and to model their dispersion and transport using the forward Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. In the first part of the study, Landsat images from 1984, 1992, 2002, and 2022 were used to produce land use/cover maps. Post-classification comparison was then applied to detect changes from 1984 to 2022. The change detection results over 38 years showed that local dust storms originated from the conversion of wetlands to agriculture and agriculture to rangeland, particularly in the southwestern area (south of Horolazim wetland) and the southern area (north of Shadegan wetland). Subsequently, the HYSPLIT model was used to perform dust feed-forward trajectory modelling from the detected dust storm centres for 365 days of 2022 at three elevation levels: 500, 1000, and 1500 m. Researchers used the Aerosol optical depth product from the moderate resolution imaging spectroradiometer and air quality monitoring data to assess HYSPLIT performance. The modelling results showed that dust storms originating from the southwestern area (Horolazim) and the southern area (north of Shadegan wetland) affected over 90% of the study area (Khuzestan) and southern provinces of Iran within 24 h of dust particle release, particularly during the hot season. Therefore, identifying areas with the most significant impact on incoming dust in southwestern Iran (Khuzestan) will help inform and guide planners and decision-makers in adopting appropriate measures. Focusing on national programs could be as valuable as international cooperation for mitigating and controlling dust storms in southwestern Iran.