a review on predicting ground pm2.5 concentration using satellite aerosol optical depth

a review on predicting ground pm2.5 concentration using satellite aerosol optical depth

;Yuanyuan Chu;Yisi Liu;Xiangyu Li;Zhiyong Liu;Hanson Lu;Yuanan Lu;Zongfu Mao;Xi Chen;Na Li;Meng Ren;Feifei Liu;Liqiao Tian;Zhongmin Zhu;Hao Xiang
Journal of the science of food and agriculture 2016 Vol. 7 pp. 129-
230
chu2016atmospherea

Abstract

This study reviewed the prediction of fine particulate matter (PM2.5) from satellite aerosol optical depth (AOD) and summarized the advantages and limitations of these predicting models. A total of 116 articles were included from 1436 records retrieved. The number of such studies has been increasing since 2003. Among these studies, four predicting models were widely used: Multiple Linear Regression (MLR) (25 articles), Mixed-Effect Model (MEM) (23 articles), Chemical Transport Model (CTM) (16 articles) and Geographically Weighted Regression (GWR) (10 articles). We found that there is no so-called best model among them and each has both advantages and limitations. Regarding the prediction accuracy, MEM performs the best, while MLR performs worst. CTM predicts PM2.5 better on a global scale, while GWR tends to perform well on a regional level. Moreover, prediction performance can be significantly improved by combining meteorological variables with land use factors of each region, instead of only considering meteorological variables. In addition, MEM has advantages in dealing with the AOD data with missing values. We recommend that with the help of higher resolution AOD data, future works could be focused on developing satellite-based predicting models for the prediction of historical PM2.5 and other air pollutants.

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