1 / 10

Space-based Estimates of Anthropogenic SO 2 Emissions

Space-based Estimates of Anthropogenic SO 2 Emissions. Randall Martin, Dalhousie and Harvard-Smithsonian Chulkyu Lee, Dalhousie U  National Institute of Meteorological Research, Korea with contributions from Aaron van Donkelaar, Dalhousie University Russell Dickerson, UMBC

milla
Download Presentation

Space-based Estimates of Anthropogenic SO 2 Emissions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Space-based Estimates of Anthropogenic SO2 Emissions Randall Martin, Dalhousie and Harvard-Smithsonian Chulkyu Lee, Dalhousie U  National Institute of Meteorological Research, Korea with contributions from Aaron van Donkelaar, Dalhousie University Russell Dickerson, UMBC Jennifer Hains, Dept of Environment, Maryland Nick Krotkov NASA Goddard Andreas Richter, U Bremen 5th International GEOS–Chem Meeting 3 May 2011

  2. SO2 Emissions Have Major Implications for Climate, Air Quality, and Acid Deposition

  3. Information about Anthropogenic SO2 Sources?First Need to Improve SO2 Retrieval Algorithm Lee et al., JGR, 2009

  4. Local Air Mass Factor Improves Agreement with Aircraft Observations (INTEX-A and B) OMI SCIAMACHY Orig: slope = 1.6, r2 = 0.50 New: slope = 0.95, r2 = 0.85 Orig: slope = 1.3, r2 = 0.62 New: slope = 1.1, r2 = 0.79 Uses LIDORT from Spurr et al. Lee et al., JGR, 2009

  5. Anthropogenic Sources Dominate Annual Mean SO2 Column Volcanic SO2 Emissions 10% of Anthropogenic Source GEOS-ChemSimulations for 2006 Total SO2 Column Anthropogenic SO2 Column Fraction from Anthropogenic Lee et al., JGR, 2011

  6. Use OMI and SCIAMACHY SO2 Columns to Map SO2 Emissions Tropospheric SO2 column ~ ESO2 Over Land day OH, cloud SO42- DMS SO2 ~day Deposition Emission Phytoplankton Combustion, Smelters, Volcanoes

  7. Evaluate GEOS-Chem SO2 Lifetime vs Calculations from In Situ Measurements U Maryland Research Flights for Eastern U.S. C is SO2 from EPA Network H is GEOS-4 Mixed Layer Depth June - August Hains, Dickerson, et al., 2007 Lee et al., JGR, 2011

  8. Global Anthropogenic Sulfur Emissions Over Land for 2006Volcanic SO2 Columns (>1x1017molec cm-2) Excluded From Inversion Top-Down (OMI) 49.9 Tg S/yr Bottom-Up in GEOS-Chem (EDGAR2000, NEI2005, EMEP2005, Streets2006) Scaled to 2006 r2 = 0.59 54.6 Tg S/yr SO2 Emissions (1011 molecules cm-2 s-1) Lee et al., JGR, 2011 Cloud Radiance Fraction < 0.2

  9. Anthropogenic Emissions Differences (2006) -2.2 Tg S/yr -4.7 Tg S/yr Cloud Radiance Fraction < 0.2, SZA < 50o Lee et al., JGR, 2011

  10. Emerging Capability for Top-down Constraints on Anthropogenic SO2 Emissions • Similar top-down inventories from different retrievals • Close agreement with bottom-up over North America and Europe • Challenges • Further development of SO2 retrievals • Evaluate and improve simulation of sulfur chemistry • Apply more sophisticated inversion capability Acknowledgements: Health Canada, NASA

More Related