Real-Time Estimation of Population Exposure to PM2.5 Using Mobile- and Station-Based Big Data
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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摘要Extremely high fine particulate matter (PM2.5) concentration has been a topic of special concern in recent years because of its important and sensitive relation with health risks. However, many previous PM2.5 exposure assessments have practical limitations, due to the assumption that population distribution or air pollution levels are spatially stationary and temporally constant and people move within regions of generally the same air quality throughout a day or other time periods. To deal with this challenge, we propose a novel method to achieve the real-time estimation of population exposure to PM2.5 in China by integrating mobile-phone locating-request (MPL) big data and station-based PM2.5 observations. Nationwide experiments show that the proposed method can yield the estimation of population exposure to PM2.5 concentrations and cumulative inhaled PM2.5 masses with a 3-h updating frequency. Compared with the census-based method, it introduced the dynamics of population distribution into the exposure estimation, thereby providing an improved way to better assess the population exposure to PM2.5 at different temporal scales. Additionally, the proposed method and dataset can be easily extended to estimate other ambient pollutant exposures such as PM10, O3, SO2, and NO2, and may hold potential utilities in supporting the environmental exposure assessment and related policy-driven environmental actions.
出版社接受日期16.03.2018
著者Bin Chen, Yimeng Song, Tingting Jiang, Ziyue Chen, Bo Huang, Bing Xu
期刊名稱International Journal of Environmental Research and Public Health
出版年份2018
月份4
卷號15
期次4
出版社MDPI
文章號碼573
國際標準期刊號1661-7827
語言美式英語
關鍵詞air pollution exposure, human mobility, mobile phone data, dynamic assessment

上次更新時間 2020-06-08 於 03:41