WMO OSCAR | Details for Instrument MSU-GSM

No JavaScript detected
Usage of this Website will be severly limited without JavaScript. Please enable JavaScript in your Browser.

Instrument: MSU-GSM

Instrument details

Acronym	MSU-GSM
Full name	Electro-GOMS Imager for Electro M
Purpose	Multi-purpose imagery and wind derivation by tracking clouds and water vapour features
Short description	20 channels in the 0.38-14.25 mm range. 4 channels in VIS, SNR ≥ 200; 16 channels in IR, NEΔT = 0.1 @ 300 K (3.5-4.0 and 7.5-12.5 μm) or 0.3 @ 250 K (5.7-7.0 and 13-15 μm)
Background	Evolution of MSU-GS on Electro-L N1/N2/N3
Scanning Technique	Mechanical, 3-axis stabilised satellite, E-W continuous, S-N stepping
Resolution	0.5 km s.s.p. (VIS channels), 2.0 km s.s.p. (channels 0.9-12 μm), 4.0 km s.s.p. (channels 13-15 μm)
Coverage / Cycle	Full disk every 10 min, progressively less for partial areas
Mass	150 kg	Power	90 W	Data Rate

Providing Agency	Roscosmos
Instrument Maturity	Flown on operational programme
Utilization Period:	2031 to 2045
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

Electro (RosHydroMet)
- Electro-M N1-1 (see instrument status) Jan 2031 - 2045
- Electro-M N1-2 (see instrument status) 2032 - 2045

Instrument classification

Earth observation instrument
Passive optical radiometer or spectrometer
Moderate resolution optical imager

WIGOS Subcomponents

Subcomponent 1
Multi-spectral VIS/IR imagery With rapid repeat cycles [in GEO]
Multi-spectral VIS/IR imager with rapid repeat cycles [in GEO]

Mission objectives

Primary mission objectives

Cloud cover
Cloud optical depth
Cloud top height
Cloud top temperature
Cloud type
Wind (horizontal)

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.

Search:

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Cloud cover*	1 - primary	No specific limitation.	VIS, NIR, SWIR, MWIR and TIR channels
Cloud type*	1 - primary	No specific limitation.	VIS, NIR, SWIR, MWIR and TIR channels
Aerosol volcanic ash Total Column	1 - primary	Cloud sensitive.	TIR channel(s). Frequent sampling (GEO) enables early detection of ash plumes
Cloud top height*	2 - very high	No specific limitation.	TIR channels in window and water vapour band (for emissivity) for temperature; and in CO2 band for atmospheric column above cloud top
Cloud top temperature*	2 - very high	No specific limitation.	TIR channels in window and water vapour band (for emissivity)
Fire radiative power	2 - very high	Cloud sensitive.. Coarse spatial resolution.	MWIR and TIR channels. Frequent sampling (GEO) enables early detection
Fire temperature	2 - very high	Cloud sensitive.. Coarse spatial resolution.	MWIR and TIR channels. Frequent sampling (GEO) enables early detection
Leaf Area Index (LAI)	2 - very high	Cloud sensitive.. Daylight only.	VIS, NIR and SWIR channels
Sea surface temperature	2 - very high	Cloud sensitive.	MWIR and TIR window channels around 3.7 and 11 micrometers (cloud impact reduction, water vapour correction)
Snow cover	2 - very high	Cloud sensitive.. Daylight only.	VIS, NIR and SWIR channels enabling screening snow from clouds. Frequent sampling improves probability of cloud-free views
Integrated Water Vapour (IWV)	2 - very high	Cloud sensitive.	NIR and TIR channels around 940 nm, 6.3 micrometers and in the 11 micrometers split window
Wind (horizontal)*	2 - very high	Cloud or water vapour tracers needed.	VIS channel(s) and TIR channels around 6.3 and 11 micrometers, and 13.3 micrometers for more accurate height assignment. Frequent sampling (GEO) enables inference from cloud or water vapour pathces motion
Accumulated precipitation	3 - high	Convective precipitation dominant.. Calibration by MW needed.	TIR channels in the 11 micrometers window, and SWIR and the MWIR 3.7 window channel for cloud microphysics. Frequent sampling (GEO) is essential for accumulated precipitation
Cloud drop effective radius	3 - high	At cloud top.. Daylight only.	VIS, NIR, SWIR and MWIR channels (for differentiation)
Cloud ice effective radius	3 - high	At cloud top.. Daylight only.	VIS, NIR, SWIR and MWIR channels (for differentiation)
Cloud optical depth*	3 - high	Low-density cloud only.. Daylight only.	VIS, NIR and SWIR channels
Downward short-wave irradiance at Earth surface	3 - high	Cloud sensitive.. Highly indirect.	VIS, NIR and SWIR channels
Earth surface albedo	3 - high	Cloud sensitive.	VIS channel with changing solar incidence angles as daylight progresses
Earth surface short-wave bidirectional reflectance	3 - high	Cloud sensitive.	VIS, NIR and SWIR channels with changing solar incidence angles as daylight progresses
Land surface temperature	3 - high	Cloud sensitive.	MWIR and TIR window channels (high sensitivity to high temperature, cloud impact reduction, water vapour correction)
Normalised Difference Vegetation Index (NDVI)	3 - high	Cloud sensitive.	VIS and NIR channels
Precipitation intensity at surface (liquid or solid)	3 - high	Convective precipitation dominant.. Calibration by MW needed.	TIR channels in the 11 micrometers window, and SWIR and the MWIR 3.7 window channel for cloud microphysics. Frequent sampling (GEO) consistent with precipitation temporal variability
Specific humidity	3 - high	Cloud sensitive.. Coarse vertical resolution.. Middle troposphere only.	TIR channels in the water vapour band around 6.3 micrometers
Upward short-wave irradiance at TOA	3 - high	Spectral interpolation needed.	VIS, NIR and SWIR channels with changing solar incidence angles as daylight progresses
Aerosol column burden	4 - fair	Cloud sensitive.. Daylight only.	VIS, NIR and SWIR channels with changing solar incidence angles as daylight progresses
Aerosol Optical Depth	4 - fair	Cloud sensitive.. Daylight only.	VIS, NIR and SWIR channels with changing solar incidence angles as daylight progresses
Biomass	4 - fair	Cloud sensitive.. Index only.. Daylight only.	VIS, NIR and SWIR channels. Biomass inferred from NDVI and LAI
Downward long-wave irradiance at Earth surface	4 - fair	Cloud sensitive.. Highly indirect.	MWIR and TIR channels including water vapour and CO2 bands
Fire fractional cover	4 - fair	Cloud sensitive.. Coarse spatial resolution.	VIS, MWIR and TIR channels. Frequent sampling (GEO) enables early detection
Fraction of Absorbed PAR (FAPAR)	4 - fair	Cloud sensitive.	VIS channels including Red at 700 nm
Photosynthetically Active Radiation (PAR)	4 - fair	Cloud sensitive.	VIS channels, range undersampled
Short-wave cloud reflectance	4 - fair	No specific limitation.	VIS, NIR and SWIR channels
Soil moisture at surface	4 - fair	Cloud sensitive.. Index only.	VIS, NIR, SWIR, MWIR and TIR channels. Soil moisture inferred from differential brightness and thermal inertia, that are accurately measured by frequent sampling (GEO)
Upward long-wave irradiance at TOA	4 - fair	Spectral interpolation needed.	MWIR and TIR channels in windows around 3.7 and 11 micrometers, and in water vapour and CO2 bands around 6.3 and 15 micrometers
Upward long-wave irradiance at Earth surface	4 - fair	Cloud sensitive.. Highly indirect.	MWIR and TIR channels in windows around 3.7 and 11 micrometers, and in water vapour and CO2 bands around 6.3 and 15 micrometers
Aerosol volcanic ash	4 - fair	Cloud sensitive.. Daylight only.	VIS, NIR and SWIR channels with changing solar incidence angles as daylight progresses
O3 Total Column	5 - marginal	Cloud sensitive.	TIR channel(s). Ozone lines in band around 9.7 micrometers. Frequent sampling (GEO) enables monitoring diurnal variations

Showing 1 to 37 of 37 entries