The soil fugitive dust emission assessment using satellite data: A case study in Beijing-Tianjin-Hebei and its surrounding areas (BTHSA)

IF 3.9 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Atmospheric Pollution Research Pub Date : 2025-02-28 DOI:10.1016/j.apr.2025.102482

Yanyu Li , Qizhong Wu , Huaqiong Cheng , Yiming Sun , Jieying He , Jie Li

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Abstract

Soil fugitive dust (SFD) emission is a vital to environmental supervision in Beijing-Tianjin-Hebei and its Surrounding Areas (BTHSA). However, SFD emission inventory is updated slowly and has great uncertainty for air quality models. In this study, the Google Earth Engine (GEE) cloud platform is used for image acquisition, data preprocessing, and index calculation to rapidly produce bare soil maps, and a dynamic method of developing SFD emission inventory via bare soil maps is developed. The results showed that the BTHSA is susceptible to wind erosion and that the total bare soil area reached 1.05 × 10⁵ km², and the SFD PM_2.5 emission was 1.2 × 10⁵ tons in 2020 according to the wind erosion model. SFD PM_2.5 emission is higher in plains areas than in mountainous areas in the BTHSA. The Community Multiscale Air Quality (CMAQ) modeling system is used to validate the SFD emissions with ground-based observational data. SFD emission generates greatly increase PM_2.5 in simulations and significantly alleviates 57.9% of the negative biases in PM_2.5 in the BTHSA. Identifying the spatiotemporal characteristics of SFD emissions is crucial for controlling air pollution in cities.

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来源期刊

Atmospheric Pollution Research ENVIRONMENTAL SCIENCES-

CiteScore

8.30

自引率

6.70%

发文量

256

审稿时长

36 days

期刊介绍： Atmospheric Pollution Research (APR) is an international journal designed for the publication of articles on air pollution. Papers should present novel experimental results, theory and modeling of air pollution on local, regional, or global scales. Areas covered are research on inorganic, organic, and persistent organic air pollutants, air quality monitoring, air quality management, atmospheric dispersion and transport, air-surface (soil, water, and vegetation) exchange of pollutants, dry and wet deposition, indoor air quality, exposure assessment, health effects, satellite measurements, natural emissions, atmospheric chemistry, greenhouse gases, and effects on climate change.