Aerosol Absorption from Space

1
Aerosol Absorption from Space using Near-UV TOMS
and OMI observations
Omar Torres JCET, University of Maryland,
Baltimore County
Goddard Aerosol Group Update-2006 February 10
2006
2
Long-term record on aerosol optical depth from
TOMS observations (V1)
(Torres et al, JAS, 2002)
Boreal forest fires
El Chichon
Desert dust
Pinatubo
Biomass burning
3
Trends in Aerosol Optical Depth from TOMS record
(Massie et al., JGR, 2004)
Winter aerosol load increase in China
17.3/decade
Winter aerosol load increase in India
10.6/decade
The 17.3 trend has a correlation coefficient of
0.82. The 6.6 trend has a correlation
coefficient of 0.37
Correlation coefficient 0.74
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EP-TOMS (1996-2001) Climatology of Aerosol
Properties (V2)
SSA
AOD
380 nm
Summer
Absorption AOD
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Seasonal Climatology of Visible Aerosol
Absorption Optical Depth
0.00
0.05
gt0.10
0.00
0.05
gt0.10
Wavelength conversion making use of AERONET
climatology
6
Aura-OMI Aerosol Products Sample results
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Smoke over Alaska (Aug 21, 2004)
Extinction Optical Depth
Aqua-MODIS RGB
ext
Absorption Optical Depth
Single Scattering Albedo
no abs
8
Saharan Dust Outbreak across the Mediterranean,
March 1-05
Aerosol Index
Extinction Optical Depth
Single Scattering Albedo
Absorption Optical Depth
9
Summary
-TOMS and OMI Satellite measurements in the near
UV produce valuable global information on aerosol
absorption over the oceans and the continents.
-A global data set on Aerosol Absorption
Optical Depth has been produced from TOMS
observations. -The long term TOMS record reveals
the existence of trends in aerosol optical depth
in China and India. -OMI observations of
aerosol absorption will extend the TOMS
long-term record on aerosol absorption.