TY - JOUR
T1 - OMI satellite observations of decadal changes in ground-level sulfur dioxide over North America
AU - Kharol, Shailesh K.
AU - McLinden, Chris A.
AU - Sioris, Christopher E.
AU - Shephard, Mark M.
AU - Fioletov, Vitali
AU - Van Donkelaar, Aaron
AU - Philip, Sajeev
AU - Martin, Randall V.
N1 - Publisher Copyright:
© Author(s) 2017.
PY - 2017/5/15
Y1 - 2017/5/15
N2 - Sulfur dioxide (SO2) has a significant impact on the environment and human health. We estimated ground-level sulfur dioxide (SO2) concentrations from the Ozone Monitoring Instrument (OMI) using SO2 profiles from the Global Environmental Multi-scale-Modelling Air quality and CHemistry (GEM-MACH) model over North America for the period of 2005-2015. OMI-derived ground-level SO2 concentrations (r=0. 61) and trends (r=0. 74) correlated well with coincident in situ measurements from air quality networks over North America. We found a strong decreasing trend in coincidently sampled ground-level SO2 from OMI (-81±19%) and in situ measurements (-86±13g%) over the eastern US for the period of 2005-2015, which reflects the implementation of stricter pollution control laws, including flue-gas desulfurization (FGD) devices in power plants. The spatially and temporally contiguous OMI-derived ground-level SO2 concentrations can be used to assess the impact of long-Term exposure to SO2 on the health of humans and the environment.
AB - Sulfur dioxide (SO2) has a significant impact on the environment and human health. We estimated ground-level sulfur dioxide (SO2) concentrations from the Ozone Monitoring Instrument (OMI) using SO2 profiles from the Global Environmental Multi-scale-Modelling Air quality and CHemistry (GEM-MACH) model over North America for the period of 2005-2015. OMI-derived ground-level SO2 concentrations (r=0. 61) and trends (r=0. 74) correlated well with coincident in situ measurements from air quality networks over North America. We found a strong decreasing trend in coincidently sampled ground-level SO2 from OMI (-81±19%) and in situ measurements (-86±13g%) over the eastern US for the period of 2005-2015, which reflects the implementation of stricter pollution control laws, including flue-gas desulfurization (FGD) devices in power plants. The spatially and temporally contiguous OMI-derived ground-level SO2 concentrations can be used to assess the impact of long-Term exposure to SO2 on the health of humans and the environment.
UR - https://www.scopus.com/pages/publications/85019455243
U2 - 10.5194/acp-17-5921-2017
DO - 10.5194/acp-17-5921-2017
M3 - Article
AN - SCOPUS:85019455243
SN - 1680-7316
VL - 17
SP - 5921
EP - 5929
JO - Atmospheric Chemistry and Physics
JF - Atmospheric Chemistry and Physics
IS - 9
ER -