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Instrument details
Acronym
TOU
Full name
Total Ozone Unit
Purpose
Ozone total column mapping
Short description
6 channels of 1.2 nm bandwidth in the range 308-360 nm,
Background
New development
Scanning Technique
Cross-track scanning, swath 3000 km
Resolution
50 km
Coverage / Cycle
Global coverage once/day. Daylight
Mass
19.2 kg
Power
18 W
Data Rate
1 kbps
Providing Agency
CMA
Instrument Maturity
Flown on operational programme
Utilization Period:
2008 to 2015-01-05
Last update:
2021-06-02
Detailed characteristics
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
WIGOS Subcomponents
Subcomponent 1 UV/VIS/NIR nadir sounder
Mission objectives
Primary mission objectives
Secondary mission objectives HCHO Total Column NO2 Total Column PSC occurrence SO2 Total Column
Opportunity objectives Aerosol Optical Depth Aerosol column burden Aerosol effective radius Aerosol mass mixing ratio Aerosol type Aerosol volcanic ash Aerosol volcanic ash Total Column Show all Show fewer
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
Variable Relevance for measuring this variable Operational limitations Explanation
Aerosol column burden 2 - very high Cloud sensitive.. Daylight only. UV spectrometry for absorbing aerosol
Aerosol effective radius 2 - very high Cloud sensitive.. Daylight only. UV spectrometry for absorbing aerosol
Aerosol mass mixing ratio 2 - very high Cloud sensitive.. Daylight only. UV spectrometry for absorbing aerosol
Aerosol Optical Depth 2 - very high Cloud sensitive.. Daylight only. UV spectrometry for absorbing aerosol
Aerosol type 2 - very high Cloud sensitive.. Daylight only. UV spectrometry for absorbing aerosol
HCHO Total Column 3 - high Cloud sensitive.. Daylight only. UV spectrometry. HCHO lines around 350 nm
NO2 Total Column 3 - high Cloud sensitive.. Daylight only. UV spectrometry. Several NO2 lines
O3 Total Column 3 - high Cloud sensitive.. Daylight only. UV spectroradiometer. Ozone lines in the bands around 260 nm (Hartley) and/or 340 nm (Huggins)
PSC occurrence 3 - high Coarse vertical resolution.. Daylight only. UV spectrometry
SO2 Total Column 5 - marginal Cloud sensitive.. Daylight only. UV spectrometry. SO2 lines around 350 nm
Aerosol volcanic ash 2 - very high Cloud sensitive.. Daylight only. UV spectrometry, specifically sensitive to ash
Aerosol volcanic ash Total Column 2 - very high Cloud sensitive.. Daylight only. UV spectrometry, specifically sensitive to ash
Instrument: TOU