WMO OSCAR | Details for Instrument MTVZA

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

Instrument: MTVZA

Instrument details

Acronym	MTVZA
Full name	Imaging/Sounding Microwave Radiometer
Purpose	Multi-purpose imager with temperature/humidity sounding channels for improved precipitation
Short description	20-frequency / 26-channels, band 54 and 183 GHz [see detailed characteristics below]
Background	New development
Scanning Technique	Conical: 53.3° viewing angle, swath 1500 km – Scan rate: 24.9 scan/min = 15.8 km/scan
Resolution	From 10 km at 183 GHz to 200 km at 10.6 GHz; consistent with an antenna diameter of 65 cm
Coverage / Cycle	Near-global coverage twice/day
Mass	80 kg	Power	80 W	Data Rate	35 kbps

Providing Agency	Roscosmos
Instrument Maturity	Flown on operational programme
Utilization Period:	2002 to 2006
Last update:	2019-11-14

Detailed characteristics

No.	Central frequency (GHz)	Bandwidth (MHz)	Polarisation	NEΔT	IFOV	Pixel
1	18.7	800	V	0.4 K	52 x160 km	32 x32 km
2	18.7	800	H	0.4 K	52 x160 km	32 x32 km
3	22.238	1600	V	0.3 K	42 x94 km	32 x32 km
4	33.0	2000	V	0.3 K	35 x76 km	32 x32 km
5	33.0	2000	H	0.3 K	35 x76 km	32 x32 km
6	36.5	2000	V	0.3 K	30 x67 km	32 x32 km
7	36.5	2000	H	0.3 K	30 x67 km	32 x32 km
8	42.0	2000	V	0.4 K	26 x60 km	32 x32 km
9	42.0	2000	H	0.4 K	26 x60 km	32 x32 km
10	48.0	2000	V	0.4 K	24 x43 km	32 x32 km
11	48.0	2000	H	0.4 K	24 x43 km	32 x32 km
12	52.80	400	V	0.4 K	21 x48 km	48 x48 km
13	53.30	400	V	0.4 K	21 x48 km	48 x48 km
14	53.80	400	V	0.4 K	21 x48 km	48 x48 km
15	54.64	400	V	0.4 K	21 x48 km	48 x48 km
16	55.63	400	V	0.4 K	21 x48 km	48 x48 km
22	57.290344±0.3222±0.1	50	H	0.4 K	21 x48 km	48 x48 km
23	57.290344±0.3222±0.05	20	H	0.7 K	21 x48 km	48 x48 km
24	57.290344±0.3222±0.025	10	H	0.9 K	21 x48 km	48 x48 km
25	57.290344±0.3222±0.01	5	H	1.3 K	21 x48 km	48 x48 km
26	57.290344±0.3222±0.005	3	H	1.7 K	21 x48 km	48 x48 km
17	91.655	3000	V	0.6 K	14 x30 km	16 x16 km
18	91.655	3000	H	0.6 K	14 x30 km	16 x16 km
19	183.31 ± 7.0	1500	V	0.5 K	9 x21 km	32 x32 km
20	183.31 ± 3.0	1000	V	0.6 K	9 x21 km	32 x32 km
21	183.31 ± 1.0	500	V	0.8 K	9 x21 km	32 x32 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-3M (see instrument status) Mar 2002 - Apr 2006

Instrument classification

Earth observation instrument
Passive microwave radiometer
Conical scanning microwave radiometer

WIGOS Subcomponents

Subcomponent 1
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.1	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.1. 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 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 19, 23, 37 and 90 GHz; and in bands 54 and 183 GHz, insensitive to surface emissivity and providing information on atmospheric structure
Snow cover	3 - high	Coarse spatial resolution.1	MW channels around 19, 37 and 90 GHz. Higher frequencies less sensitive to emissivity from ground under snow
Sea-ice cover*	3 - high	No specific limitation.	MW channels around 19, 37 and 90 GHz
Wind speed (near surface)*	4 - fair	Over sea only.	MW channels around 19 and 37 GHz
Sea-ice type	4 - fair	No specific limitation.	MW channels around 19, 37 and 90 GHz. Type interpreted as age/roughness
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
Long-wave Earth surface emissivity	5 - marginal	Long time series needed.	MW channels around 19, 37 and 90 GHz. Emissivity across this MW range inferred by statistical analysis
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
Cloud drop effective radius	5 - marginal	Highly indirect.	MW channels around 37 and 90 GHz, and in bands 54 and 183 GHz

Showing 1 to 22 of 22 entries