OMIs Science team activities

1
Sulfur dioxide (SO2) and aerosol from EOS AURA
satellite

• The NASA EOS Aura platform, launched on July 15,
  2004, carries the Ozone Monitoring Instrument
  (OMI)
• Joint Dutch-Finnish Instrument with
  Duch/Finish/U.S. Science Team
• PI P. Levelt, KNMI
• Hyperspectral wide FOV Radiometer
• 270-500 nm
• 13x24 km nadir footprint (highest resolution from
  space ! )
• Swath width 2600 km ( contiguous coverage )
• Radicals Column O3, NO2, BrO, OClO
• O3 profile 5-10 km vert resolution
• Tracers Column SO2 , HCHO
• Aerosols (smoke, dust and sulfates)
• Cloud top press., cloud coverage
• Surface UVB
• Tropospheric ozone

2-dimensional CCD
wavelength
780 pixels
580 pixels
viewing angle
57 deg
flight direction
7 km/sec
13 km
(2 sec flight))
2600 km
12 km/24 km (binned co-added)
2
Average (2005-2006) SO2 burdens over USA,
SO2 emissions have been measured by OMI over Ohio
valley in the USA
3
Average (2005-2006) SO2 burdens over USA, Europe

SO2 emissions have been measured by OMI over Ohio
valley in the USA
Power plants in Eastern Europe
Etna volcano in Sicily, Italy
4
Average (2005-2006) SO2 burdens over USA, Europe
and China
East-Aire05 experiment
25.5 million tons of SO2 was emitted by Chinese
factories in 2005 up 27
from 2000
5
EAST-AIRE regional experiment over NE China in
April 2005. SO2 observations from instrumented
aircraft flights are compared with OMI SO2 maps.
Aerosol
Aircraft spirals
SO2
6
OMI 500nm Aerosol Extinction Optical Depth (AOD)
shows a reasonable agreement with Aqua/MODIS
May
August
OMI AOD 500nm
MODIS AOD 550nm
7
OMI Aerosol Absorption Optical Depth (AAOD)
is a unique product needs validation !
May
August