Satellite UV-Vis spectroscopy: implications for air quality trends and their driving forces in China during 2005-2017.

ABSTRACT: Abundances of a range of air pollutants can be inferred from satellite UV-Vis spectroscopy measurements by using the unique absorption signatures of gas species. Here, we implemented several spectral fitting methods to retrieve tropospheric NO₂, SO₂, and HCHO from the ozone monitoring instrument (OMI), with radiative simulations providing necessary information on the interactions of scattered solar light within the atmosphere. We analyzed the spatial distribution and temporal trends of satellite-observed air pollutants over eastern China during 2005-2017, especially in heavily polluted regions. We found significant decreasing trends in NO₂ and SO₂ since 2011 over most regions, despite varying temporal features and turning points. In contrast, an

SUBMITTER: Zhang C 

PROVIDER: S-EPMC6853934 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature