BackForwardInstrument:  OMI  

Instrument details
Acronym OMI
Full name Ozone Monitoring Instrument
Purpose Ozone profile and total-column or gross profile of other species.  Tracked species: BrO, NO2, O3, OClO, SO2 and aerosol
Short description UV/VIS grating imaging spectrometer, three bands, 1560 channels total [see detailed characteristics below]
Background New development
Scanning Technique Pushbroom, cross-track swath 2600 km - Zoom mode available, with swath 725 km
Resolution 13 x 24 km2 associated to 2600 km swath, reduced to 36 x 48 km2 for profiles. 13 x 12 km2 in zoom mode
Coverage / Cycle Global coverage every day, in daylight
Mass 65 kg Power 66 W Data Rate 800 kbps

 

Providing Agency NIVR
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2004-10-14 to ≥2017
Last update: 2017-03-29
Detailed characteristics
Spectral range No. of channels Spectral resolution SNR @ specified input spectral radiance
270 - 314 nm 390 0.42 nm …….. @ ……… W m-2 sr-1 μm-1
306 - 380 nm 390 0.45 nm …….. @ ……… W m-2 sr-1 μm-1
350 - 500 nm 780 0.63 nm …….. @ ……… W m-2 sr-1 μm-1
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • Cross-nadir shortwave (UV/VIS) sounder
Mission objectives
Primary mission objectives
  • BrO
  • ClO
  • H2O
  • HCHO
  • HCHO (Total Column)
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Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Aerosol column burden4 - fairCloud sensitive.. Daylight only.UV (for absorbing aerosol) and VIS spectrometry
Aerosol effective radius5 - marginalCloud sensitive.. Daylight only.UV (for absorbing aerosol) and VIS spectrometry
Aerosol mass mixing ratio5 - marginalCloud sensitive.. Daylight only.UV (for absorbing aerosol) and VIS spectrometry
Aerosol Optical Depth4 - fairCloud sensitive.. Daylight only.UV (for absorbing aerosol) and VIS spectrometry
Aerosol type5 - marginalCloud sensitive.. Daylight only.UV (for absorbing aerosol) and VIS spectrometry
BrO4 - fairCloud sensitive.. Daylight only.UV spectrometry. BrO lines around 300 nm
HCHO 4 - fairCloud sensitive.. Coarse vertical resolution.. Daylight only.UV spectrometry. HCHO lines around 350 nm
HCHO (Total Column)4 - fairCloud sensitive.. Daylight only.UV spectrometry. HCHO lines around 350 nm
ClO4 - fairCloud sensitive.. Daylight only.UV Spectrometry. ClO lines around 300 nm
Cloud cover5 - marginalDaylight only.VIS spectroscopy
Cloud optical depth4 - fairLow-density cloud only.. Daylight only.VIS spectrometry
H2O5 - marginalCloud sensitive.. Daylight only.UV and VIS spectrometry. Several weak bands
NO4 - fairCloud sensitive.. Coarse vertical resolution.. Daylight only.UV spectrometry. NO lines around 250 nm
NO24 - fairCloud sensitive.. Coarse vertical resolution.. Daylight only.UV and VIS spectrometry. Several lines in the ranges around 220 nm and 400 nm
NO2 (Total column)4 - fairCloud sensitive.. Daylight only.UV and VIS spectrometry. Several NO2 lines
O32 - very highCloud sensitive.. Daylight only.UV and VIS spectrometry. Ozone lines in the bands around 260 nm (Hartley) and/or 340 nm (Huggins) and 600 nm (Chappuis)
O3 (Total column)1 - primaryCloud sensitive.. Daylight only.UV and VIS spectrometry. Ozone lines in the bands around 260 nm (Hartley) and/or 340 nm (Huggins) and 600 nm (Chappuis)
PSC occurrence3 - highCoarse vertical resolution.. Daylight only.UV and VIS spectrometry
SO24 - fairCloud sensitive.. Coarse vertical resolution.. Daylight only.UV spectrometry. SO2 lines around 350 nm
SO2 (Total column)4 - fairCloud sensitive.. Daylight only.UV spectrometry. SO2 lines around 350 nm
Upward short-wave irradiance at TOA4 - fairSpectral interpolation needed.. Information on BRDF needed.UV and VIS spectrometry
Upward spectral radiance at TOA5 - marginalMissing NIR, SWIR and all Long-waves.UV and VIS spectrometry
Aerosol volcanic ash5 - marginalCloud sensitive.. Daylight only.UV (specifically sensitive to ash) and VIS spectrometry
Aerosol volcanic ash (Total column)4 - fairCloud sensitive.. Daylight only.UV (specifically sensitive to ash) and VIS spectrometry