SO₂ Emission Estimates Using OMI SO₂ Retrievals for 2005-2017.

ABSTRACT: SO₂ column densities from Ozone Monitoring Instrument provide important information on emission trends and missing sources, but there are discrepancies between different retrieval products. We employ three Ozone Monitoring Instrument SO₂ retrieval products (National Aeronautics and Space Administration (NASA) standard (SP), NASA prototype, and BIRA) to study the magnitude and trend of SO₂ emissions. SO₂ column densities from these retrievals are most consistent when viewing angles and solar zenith angles are small, suggesting more robust emission estimates in summer and at low latitudes. We then apply a hybrid 4D-Var/mass balance emission inversion to derive monthly SO₂ emissions from the NASA SP and BIRA products. Compared to HTAPv2 e

SUBMITTER: Qu Z 

PROVIDER: S-EPMC6853235 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature