An Ensemble Spatiotemporal Model for Predicting PM2.5 Concentrations
文献类型：期刊论文
| 作者 | Li, Lianfa1,2 ; Zhang, Jiehao1,2; Qiu, Wenyang1,2; Wang, Jinfeng1,2; Fang, Ying1,2
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| 刊名 | INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
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| 出版日期 | 2017-05-01 |
| 卷号 | 14期号:5页码:20 |
| 关键词 | PM2.5 PM10 predictor exposure estimation kriging ensemble model |
| ISSN号 | 1660-4601 |
| DOI | 10.3390/ijerph14050549 |
| 通讯作者 | Li, Lianfa(lilf@lreis.ac.cn) |
| 英文摘要 | Although fine particulate matter with a diameter of <2.5 mu m (PM2.5) has a greater negative impact on human health than particulate matter with a diameter of <10 mu m (PM10), measurements of PM2.5 have only recently been performed, and the spatial coverage of these measurements is limited. Comprehensively assessing PM2.5 pollution levels and the cumulative health effects is difficult because PM2.5 monitoring data for prior time periods and certain regions are not available. In this paper, we propose a promising approach for robustly predicting PM2.5 concentrations. In our approach, a generalized additive model is first used to quantify the non-linear associations between predictors and PM2.5, the bagging method is used to sample the dataset and train different models to reduce the bias in prediction, and the variogram for the daily residuals of the ensemble predictions is then simulated to improve our predictions. Shandong Province, China, is the study region, and data from 96 monitoring stations were included. To train and validate the models, we used PM2.5 measurement data from 2014 with other predictors, including PM10 data, meteorological parameters, remote sensing data, and land-use data. The validation results revealed that the R-2 value was improved and reached 0.89 when PM10 was used as a predictor and a kriging interpolation was performed for the residuals. However, when PM10 was not used as a predictor, our method still achieved a CV R-2 value of up to 0.86. The ensemble of spatial characteristics of relevant factors explained approximately 32% of the variance and improved the PM2.5 predictions. The spatiotemporal modeling approach to estimating PM2.5 concentrations presented in this paper has important implications for assessing PM2.5 exposure and its cumulative health effects. |
| WOS关键词 | AEROSOL OPTICAL DEPTH ; PARTICULATE AIR-POLLUTION ; CHEMICAL-COMPOSITION ; MATTER PM2.5 ; CHINA ; EXPOSURE ; URBAN ; PM10 ; SENSITIVITY ; CALIFORNIA |
| 资助项目 | Natural Science Foundation of China[41471376] ; Natural Science Foundation of China[41171344] ; Ministry of Science and Technology of China[2014FY121100] |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| WOS记录号 | WOS:000404106400096 |
| 出版者 | MDPI AG |
| 资助机构 | Natural Science Foundation of China ; Ministry of Science and Technology of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/63321]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Lianfa |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, A11 Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Lianfa,Zhang, Jiehao,Qiu, Wenyang,et al. An Ensemble Spatiotemporal Model for Predicting PM2.5 Concentrations[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2017,14(5):20. |
| APA | Li, Lianfa,Zhang, Jiehao,Qiu, Wenyang,Wang, Jinfeng,&Fang, Ying.(2017).An Ensemble Spatiotemporal Model for Predicting PM2.5 Concentrations.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,14(5),20. |
| MLA | Li, Lianfa,et al."An Ensemble Spatiotemporal Model for Predicting PM2.5 Concentrations".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 14.5(2017):20. |
入库方式： OAI收割
来源：地理科学与资源研究所
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