Preprints
https://doi.org/10.5194/essd-2022-281
https://doi.org/10.5194/essd-2022-281
 
06 Sep 2022
06 Sep 2022
Status: this preprint is currently under review for the journal ESSD.

Version 2 of the global catalogue of large anthropogenic and volcanic SO2 sources and emissions derived from satellite measurements

Vitali Fioletov1, Chris A. McLinden1, Debora Griffin1, Ihab Abboud1, Nickolay Krotkov2, Peter J. T. Leonard3, Can Li2,4, Joanna Joiner2, Nicolas Theys5, and Simon Carn6 Vitali Fioletov et al.
  • 1Air Quality Research Division, Environment and Climate Change Canada, Toronto, ON, Canada
  • 2Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
  • 3The Terrestrial Information Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA
  • 4Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA
  • 5Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
  • 6Department of Geological and Mining Engineering and Sciences, Michigan Technological University, Houghton, MI 49931, USA

Abstract. Sulfur dioxide (SO2) measurements from the Ozone Monitoring Instrument (OMI), Ozone Mapping and Profiler Suite (OMPS), and TROPOspheric Monitoring Instrument (TROPOMI) satellite spectrometers were used to update and extend the previously developed global catalogue of large SO2 emission sources. This version 2 of the global catalogue covers the period of 2005–2021 and includes a total of 759 continuously emitting point sources releasing from about 10 kt yr-1 to more than 4000 kt yr-1 of SO2 that have been identified and grouped by country and primary source origin: volcanoes (106 sources); power plants (477); smelters (74); and sources related to the oil and gas industry (102). There are several major improvements compared to the original catalogue: it combines emissions estimates from three satellite instruments instead of just OMI, uses a new version 2 of the OMI and OMPS SO2 dataset, and updated consistent site-specific air mass factors (AMF) are used to calculate SO2 vertical column densities (VCDs). The newest TROPOMI SO2 data processed with the Covariance-Based Retrieval Algorithm (COBRA), used in the catalogue, can detect sources with emissions as low as 8 kt yr-1 (in 2018–2021) compared to the 30 kt yr-1 limit for OMI. In general, there is an overall agreement within ±12 % in total emissions estimated from the three satellite instruments for large regions. For individual emission sources, the spread is larger: the annual emissions estimated from OMI and TROPOMI agree within ±13 % in 50 % of cases and within ±28 % in 90 % of cases. The version 2 catalogue emissions were calculated as a weighted average of emission estimates from the three satellite instruments using an inverse-variance weighting method. OMI, OMPS, and TROPOMI data contribute 7 %, 5 %, and 88 % to the average respectively for small (< 30 kt y-1) sources and 33 %, 20 %, and 47 % respectively for large (> 300 kt y-1) sources. The catalogue data show an approximate 50 % decline in global SO2 emissions between 2005 and 2021, although emissions were relatively stable during the last 3 years. The version 2 of the global catalogue has been posted at the NASA Global SO2 Monitoring web site (Fioletov et al., 2022).

Vitali Fioletov et al.

Status: open (until 01 Nov 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Vitali Fioletov et al.

Data sets

Multi-Satellite Air Quality Sulfur Dioxide (SO2) Sources and Emissions Database Long-Term L4 Global V2 Vitali Fioletov, Chris A. McLinden, Debora Griffin, Ihab Abboud, Nickolay Krotkov, Peter J. T. Leonard, Can Li, Joanna Joiner, Nicolas Theys, and Simon Carn https://so2.gsfc.nasa.gov/kml/Catalogue_SO2_2022.xls

Vitali Fioletov et al.

Viewed

Total article views: 146 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
105 35 6 146 2 2
  • HTML: 105
  • PDF: 35
  • XML: 6
  • Total: 146
  • BibTeX: 2
  • EndNote: 2
Views and downloads (calculated since 06 Sep 2022)
Cumulative views and downloads (calculated since 06 Sep 2022)

Viewed (geographical distribution)

Total article views: 142 (including HTML, PDF, and XML) Thereof 142 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 20 Sep 2022
Download
Short summary
Sulfur dioxide (SO2) measurements from three satellite instruments were used to update and extend the previously developed global catalogue of large SO2 emission sources. This version 2 of the global catalogue covers the period of 2005–2021 and includes a total of 759 continuously emitting point sources. The catalogue data show an approximate 50 % decline in global SO2 emissions between 2005 and 2021, although emissions were relatively stable during the last 3 years.