Spatial⁻Temporal Variations in NO₂ and PM2.5 over the Chengdu⁻Chongqing Economic Zone in China during 2005⁻2015 Based on Satellite Remote Sensing.

ABSTRACT: The Chengdu⁻Chongqing Economic Zone (CCEZ), which is located in southwestern China, is the fourth largest economic zone in China. The rapid economic development of this area has resulted in many environmental problems, including extremely high concentrations of nitrogen dioxide (NO₂) and fine particulate matter (PM2.5). However, current ground observations lack spatial and temporal coverage. In this study, satellite remote sensing techniques were used to analyze the variation in NO₂ and PM2.5 from 2005 to 2015 in the CCEZ. The Ozone Monitoring Instrument (OMI) and the Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) product were used to retrieve tropospheric NO₂ vertical columns and estimate ground-level PM2.5 concentrations, respectively. Geographically, h

SUBMITTER: Cai K 

PROVIDER: S-EPMC6264014 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature