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| DOI | 10.1016/j.atmosenv.2021.118658 |
| Quantifying the impact of cropland wind erosion on air quality: A high-resolution modeling case study of an Arizona dust storm | |
| Joshi J.R. | |
| 发表日期 | 2021 |
| ISSN | 1352-2310 |
| 卷号 | 263 |
| 英文摘要 | Dust storms fueled by wind erosion of desert and cropland soils in south-central Arizona have caused numerous highway accidents and health risks by creating hazardous air quality conditions. Despite much speculation that a major fraction of windblown dust during these storms originates at an active or abandoned cropland surface over the region, its quantification is largely missing in the literature. This study estimated the contribution of cropland wind erosion to the regional air quality degradation, in terms of concentration of particulate matter with diameter 10 μm and smaller (PM10), during a typical springtime dust storm, by conducting high-resolution (1 km horizontally) simulations utilizing the Weather Research and Forecasting-FENGSHA (a dust emission model)-Community Multiscale Air Quality (WRF-FENGSHA-CMAQ) modeling framework. The dust model for this study employed up-to-date and very high-resolution data on land use, soil texture, and vegetation index. The modeling system used in this study simulated reasonably well a regional dust storm (that raised concerns for air quality and highway safety) of 08–09 April 2013 compared against ground (station) observations of PM10 and satellite observations of dust optical depth and vertical structure of aerosol subtypes. The model evaluations also included the use of radar observations. Furthermore, the model results from this study revealed that the cropland wind erosion was responsible for 55% and 51% of total PM10 over Phoenix (33.35°N–33.85°N, 112.36°W–111.485°W) and western Pinal County (32.50°N–33.35°N, 112.2°W–111.2°W), respectively, during the simulated dust storm. The large contributions suggest that the inclusion and accurate representation of cropland dust sources are crucial in preparing emission inventories and in air quality modeling for the region. Such representation is particularly important in view of the projected future aridity over this region (that is already under a long-term drought), which may lead to fallowing of currently active farmlands, making them potential hotspots of dust emission. The modeling approach developed for this work can be used to carry out more comprehensive studies, over extended spatial and temporal extents, to identify the sources of windblown dust and quantify their climatological dust emission potentials for this region or elsewhere. Such studies are highly desirable to help decision-making processes to reduce windblown dust and the associated health and safety risks. © 2021 The Author |
| 关键词 | Dust sources and droughtEmission inventoryHealth and highway safetyNAAQS PM exceedancePinal CountyRadar observations |
| 语种 | 英语 |
| scopus关键词 | Air quality; Drought; Erosion; Health risks; Highway engineering; Land use; Motor transportation; Radar; Storms; Textures; Weather forecasting; Dust source and drought; Dust storm; Emission inventories; Health safety; Highway safety; NAAQS PM exceedance; Pinal county; Radar observations; Wind erosions; Wind-blown dust; Dust; accident; aerosol; agricultural land; air quality; aridity; concentration (composition); dust storm; emission inventory; health risk; particulate matter; quantitative analysis; radar; spatiotemporal analysis; wind erosion; Arizona; Phoenix; Pinal County; United States; Phoenix |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248252 |
| 作者单位 | Department of Atmospheric, Oceanic, and Earth Sciences, George Mason University, Fairfax, VA, United States |
| 推荐引用方式 GB/T 7714 | Joshi J.R.. Quantifying the impact of cropland wind erosion on air quality: A high-resolution modeling case study of an Arizona dust storm[J],2021,263. |
| APA | Joshi J.R..(2021).Quantifying the impact of cropland wind erosion on air quality: A high-resolution modeling case study of an Arizona dust storm.ATMOSPHERIC ENVIRONMENT,263. |
| MLA | Joshi J.R.."Quantifying the impact of cropland wind erosion on air quality: A high-resolution modeling case study of an Arizona dust storm".ATMOSPHERIC ENVIRONMENT 263(2021). |
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