Real-Time Estimation of Population Exposure to PM 2.5 Using Mobile- and Station-Based Big Data

Bin Chen, Yimeng Song, Tingting Jiang, Ziyue Chen, Bo Huang and Bing Xu
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Bin Chen: Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing 100084, China
Yimeng Song: Department of Geography and Resource Management, The Chinese University of Hong Kong, Shatin, Hong Kong, China
Tingting Jiang: Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing 100084, China
Ziyue Chen: State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China
Bo Huang: Department of Geography and Resource Management, The Chinese University of Hong Kong, Shatin, Hong Kong, China
Bing Xu: Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing 100084, China

IJERPH, 2018, vol. 15, issue 4, 1-14

Abstract: Extremely high fine particulate matter (PM 2.5 ) concentration has been a topic of special concern in recent years because of its important and sensitive relation with health risks. However, many previous PM 2.5 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 PM 2.5 in China by integrating mobile-phone locating-request (MPL) big data and station-based PM 2.5 observations. Nationwide experiments show that the proposed method can yield the estimation of population exposure to PM 2.5 concentrations and cumulative inhaled PM 2.5 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 PM 2.5 at different temporal scales. Additionally, the proposed method and dataset can be easily extended to estimate other ambient pollutant exposures such as PM 10 , O 3 , SO 2 , and NO 2 , and may hold potential utilities in supporting the environmental exposure assessment and related policy-driven environmental actions.

Keywords: air pollution exposure; human mobility; mobile phone data; dynamic assessment (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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