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Instrument details
Acronym
SM (Meteor-3)
Full name
Infrared Sounding Radiometer
Purpose
Atmospheric temperature and humidity profile
Short description
9-channel IR radiometer operating in the range 9.65-18.70 µm
Background
Follow-on of SM flown on the Meteor-2 series
Scanning Technique
Cross-track, swath 1000 km
Resolution
42 km at s.s.p.
Coverage / Cycle
Global in 1.5 days
Mass
Power
Data Rate
Providing Agency
Roscosmos
Instrument Maturity
Flown on operational programme
Utilization Period:
1986 to 1987
Last update:
2016-10-29
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 infrared sounder, possibly including VIS channels
WIGOS Subcomponents
No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives Atmospheric temperature Integrated Water Vapour (IWV) Secondary mission objectives
Opportunity objectives Cloud cover Cloud top height Cloud top temperature Land surface temperature Upward long-wave irradiance at TOA 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
Atmospheric temperature 3 - high Cloud sensitive.. Coarse vertical resolution.. Inaccurate in low troposphere. Many TIR channels in the 15 micrometer band
Cloud cover 5 - marginal Discontinuous coverage. TIR channel(s)
Cloud top height 3 - high Discontinuous coverage. TIR channels in window and in CO2 band for atmospheric column above cloud top
Cloud top temperature 4 - fair Discontinuous coverage. TIR window channels
Land surface temperature 4 - fair Cloud sensitive.. Coarse spatial resolution. TIR split window channels for water vapour correction
Sea surface temperature 4 - fair Cloud sensitive. TIR split window channels for water vapour correction
Integrated Water Vapour (IWV) 3 - high Cloud sensitive. TIR and FIR channels from the 11 micrometers window into the 18 micrometers water vapour rotational band
Upward long-wave irradiance at TOA 5 - marginal Spectral interpolation needed. TIR and FIR channels in the 11 micrometers window, and in water vapour and CO2 bands around 6.3, 15 and 18 micrometers
Instrument: SM (Meteor-3)