WMO OSCAR | Details for Instrument SM (Meteor-3)

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Instrument: SM (Meteor-3)

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 1996
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

Meteor-3 (RosHydroMet)
- Meteor-3-1 (see instrument status) Oct 1985 - Oct 1987
- Meteor-3-2 (see instrument status) Jul 1988 - Jul 1990
- Meteor-3-3 (see instrument status) Oct 1989 - Oct 1991
- Meteor-3-4 (see instrument status) Apr 1991 - Apr 1993
- Meteor-3-5 (see instrument status) Aug 1991 - Aug 1993
- Meteor-3-6 (see instrument status) Jan 1994 - Jan 1996

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)

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
Note: * Primary mission objective.

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