Monitoring PM2'5 from Space

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Monitoring PM2.5 from Space
Allen Chu Lorraine Remer, Yoram Kaufman
(GSFC) Jim Zsykman, J. Al-Saddi, B. Pierce, D.
Neil (EPA, LaRC) achu_at_climate.gsfc.nasa.gov AGU
Fall Meeting San Francisco, CA December 12, 2003
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PM2.5 Particulate Matter with diameter lt 2.5
mm unit mg/m3 Aerosol optical depth Measure
of aerosol loading in atmospheric column due to
extinction of light unit none
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Followed by the launch of EOS-Aqua (EOS-PM)
Satellite
Launch date May 4, 2002, 255 PDT Earthview door
open date June 25, 2002
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References Remer, L. A., Y. J. Kaufman, D. Tanre,
C. Ichoku, S. Mattoo, R. Levy, D. A. Chu, B. N.
Holben, J. V. Martins, R.-R. Li, Validation of
MODIS aerosol retrieval over ocean, Geosphy. Res.
Lett., MOD 3, 1-4, 2002. Chu, D. A., Y. J.
Kaufman, C. Ichoku, L. A. Remer, D, Tanre, B. N.
Holben, Validation of MODIS aerosol optical depth
retrieval over land, Geophys. Res. Lett., 29(12),
doi10.1029/2001GL013205, 2002. Chu, D. A., Y. J.
Kaufman, G. Zibordi, J-D Chern, J-M Mao, C. Li,
H. B. Holben, Global Monitoring of Air Pollution
over Land from EOS-Terra MODIS, J. Geophys. Res.,
108(D21), 4661, doi 10.1029/2002JD003179,
2003. 10-15 MODIS related publications (4 for
air quality application)
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MODIS separation of urban/industrial and smoke
aerosols
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EPA PM2.5 and MODIS AOD
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• The Continuous Monitoring Program for PM2.5
• Focused to provide ambient concentrations in
  metropolitan areas
• Limited to no data over vast portions of the
  country
• Can the integration of data at different spatial
  and temporal scales help develop better data at
  the regional and national levels?
• Some important influences that must be considered
• Meteorology
• Long-range transport

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Courtesy David Edward
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Courtesy David Edward
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Correlations CO and Fine Mode AOD
Europe/Russia, Sept. 1-10, 2000
Corr 0.16
Courtesy David Edward
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Correlations CO and Fine Mode AODIn Eastern
China
Courtesy David Edward
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Conclusions

• Current MODIS aerosol product shows good accuracy
  and spatial sensitivity (10?10 km2) on retrieving
  columnar aerosol optical depth (Dta
  0.050.20ta) and mass concentration of PM2.5
  (D?PM2.5 10-15 ?g/m3).
• Finer resolution (e.g.,5?5 km2, 3?3 km2, or 1?1
  km2) product can improve the results on spatial
  variabililty.
• Using similar TOMS approach (near UV spectrum),
  we probably can resolve the contribution due to
  urban/industrial and smoke aerosols in biomass
  burning events.