WMO OSCAR | Details for Instrument MTVZA-GY

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Instrument: MTVZA-GY

Instrument details

Acronym	MTVZA-GY
Full name	Imaging/Sounding Microwave Radiometer - improved
Purpose	Multi-purpose imager with temperature/humidity sounding channels for improved precipitation
Short description	21-frequency / 29-channels, including bands 54 and 183 GHz [see detailed characteristics below]
Background	Evolution of MTVZA flown on Meteor-3M
Scanning Technique	Conical: 53.3° viewing angle, swath 1500 km – Scan rate: 24.9 scan/min = 15.8 km/scan
Resolution	From 12 km at 183 GHz to 130 km at 10.6 GHz; consistent with an antenna diameter of 65 cm
Coverage / Cycle	Near-global coverage twice/day
Mass	90 kg	Power	80 W	Data Rate	35 kbps

Providing Agency	Roscosmos
Instrument Maturity	Flown on operational programme
Utilization Period:	2010 to 2042
Last update:	2024-11-18

Detailed characteristics

No.	Central frequency (GHz)	Bandwidth (MHz)	Polarisations	NEΔT	IFOV	Pixel
1	10.6	100	V, H	0.5 K	89 x 198 km	32 x 32 km
2	18.7	200	V, H	0.4 K	52 x 116 km	32 x 32 km
3	23.8	400	V, H	0.3 K	42 x 94 km	32 x 32 km
4	31.5	400	V, H	0.3 K	35 x 76 km	32 x 32 km
5	36.7	400	V, H	0.3 K	30 x 67 km	32 x 32 km
6	42.0	400	V, H	0.4 K	26 x 60 km	32 x 32 km
7	48.0	400	V, H	0.4 K	24 x 43 km	32 x 32 km
8	52.80	400	V	0.4 K	21 x 48 km	48 x 48 km
9	53.30	400	V	0.4 K	21 x 48 km	48 x 48 km
10	53.80	400	V	0.4 K	21 x 48 km	48 x 48 km
11	54.64	400	V	0.4 K	21 x 48 km	48 x 48 km
12	55.63	400	V	0.4 K	21 x 48 km	48 x 48 km
13	57.290344±0.3222±0.1	50	H	0.4 K	21 x 48 km	48 x 48 km
14	57.290344±0.3222±0.05	20	H	0.7 K	21 x 48 km	48 x 48 km
15	57.290344±0.3222±0.025	10	H	0.9 K	21 x 48 km	48 x 48 km
16	57.290344±0.3222±0.01	5	H	1.3 K	21 x 48 km	48 x 48 km
17	57.290344±0.3222±0.005	3	H	1.7 K	21 x 48 km	48 x 48 km
18	91.655	2500	V, H	0.6 K	14 x 30 km	16 x 16 km
19	183.31 ± 7.0	1500	V	0.5 K	9 x 21 km	32 x 32 km
20	183.31 ± 3.0	1000	V	0.6 K	9 x 21 km	32 x 32 km
21	183.31 ± 1.0	500	V	0.8 K	9 x 21 km	32 x 32 km

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-3M (RosHydroMet)
- Meteor-M N1 (see instrument status) Apr 2010 - Sep 2014
- Meteor-M N2 (see instrument status) Oct 2014 - Aug 2017
- Meteor-M N2-1 (see instrument status) Nov 2017 - Nov 2017
- Meteor-M N2-2 (see instrument status) Oct 2019 - Dec 2024
- Meteor-M N2-3 (see instrument status) Sep 2023 - 2028
- Meteor-M N2-4 (see instrument status) 2024 - 2029
- Meteor-M N2-5 (see instrument status) Jan 2027 - 2030
- Meteor-M N2-6 (see instrument status) Jan 2028 - 2031
- Meteor-M N2-7 (see instrument status) 2032 - 2039
- Meteor-M N2-8 (see instrument status) 2033 - 2042

Instrument classification

Earth observation instrument
Passive microwave radiometer
Conical scanning microwave radiometer

WIGOS Subcomponents

Subcomponent 1
MW sounders [in SSO]
MW sounder [in SSO]
MW imagery [in SSO]
MW imager [in SSO]

Mission objectives

Primary mission objectives

Precipitation intensity at surface (liquid or solid)
Sea-ice cover
Wind speed (near surface)

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
Integrated Water Vapour (IWV)	1 - primary	No specific limitation.	MW channel(s) in the water vapour bands around 23 and 183 GHz
Atmospheric temperature	2 - very high	Coarse vertical resolution.	Many MW channels in the 54 GHz band. Nearly all-weather sounding
Cloud ice effective radius	2 - very high	No specific limitation.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz
Cloud liquid water (CLW)	2 - very high	No specific limitation.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz
Cloud liquid water (CLW) total column	2 - very high	No specific limitation.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz
Snow status (wet/dry)	2 - very high	Coarse spatial resolution.	MW channels around 19, 37 and 90 GHz. Higher frequencies less sensitive to emissivity from ground under snow
Snow water equivalent	2 - very high	Coarse spatial resolution.. Ground stations network needed.	MW channels around 19, 37 and 90 GHz. Higher frequencies less sensitive to emissivity from ground under snow
Specific humidity	2 - very high	Coarse vertical resolution.	MW channels in the 183 GHz band, and 54 GHz for temperature and liquid water corrections
Accumulated precipitation	3 - high	Poor time sampling.. Time sampling to be interpolated by GEO.	MW channels around 10, 19, 23, 37 and 90 GHz and in 54 and 183 GHz bands
Cloud ice	3 - high	No specific limitation.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz
Cloud ice Total Column	3 - high	No specific limitation.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz
Freezing level height in clouds	3 - high	No specific limitation.	MW channels in the 54 GHz band. Inference from the temperature profile
Melting layer depth in clouds	3 - high	No specific limitation.	MW channels in the 54 GHz band. Inference from the temperature profile
Precipitation intensity at surface (liquid or solid)*	3 - high	No specific limitation.	MW channels around 10, 19, 23, 37 and 90 GHz, and in bands 54 and 183 GHz (for atmospheric structure). To cover sea and land, heavy and light precipitation
Sea-ice cover*	3 - high	No specific limitation.	MW channels around 10, 19, 37 and 90 GHz
Snow cover	3 - high	Coarse spatial resolution.	MW channels around 19, 37 and 90 GHz. Higher frequencies less sensitive to emissivity from ground under snow
Soil moisture at surface	3 - high	Coarse spatial resolution.. Strongly affected by vegetation.	MW channels around 10 GHz
Wind speed (near surface)*	3 - high	Over sea only.	MW channels around 10, 19 and 37 GHz
Long-wave Earth surface emissivity	4 - fair	Long time series needed.	MW channels around 10, 19, 37 and 90 GHz. Emissivity across this MW range inferred by statistical analysis
Sea-ice type	4 - fair	No specific limitation.	MW channels around 10, 19, 37 and 90 GHz. Type interpreted as age/roughness
Cloud drop effective radius	5 - marginal	Highly indirect.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz
Downward long-wave irradiance at Earth surface	5 - marginal	Highly indirect.	MW channels in bands 54 and 183 GHz to account for downward cloud radiation
Land surface temperature	5 - marginal	Coarse spatial resolution.	MW channels around 10 GHz
Sea surface temperature	5 - marginal	Warm temperature only.	MW channels around 10 GHz
Upward long-wave irradiance at Earth surface	5 - marginal	Highly indirect.	MW channels is the 54 and 183 GHz bands to infer the impact of clouds on the upward LW radiation

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