BackForwardInstrument:  MWRI-2 

Instrument details
Acronym MWRI-2
Full name Micro-Wave Radiation Imager 2
Purpose Multi-purpose microwave imagery
Short description
  • 13 frequencies, 22 channels [see detailed characteristics below]
  • Calibration monitoring here
Background

Development from MWRI-1 first embarked on FY-3F

Scanning Technique

Conical: 53°/50° zenith angle, swath 1400 km - Scan rate: 1.8 s

Resolution Changing with frequency, consistent with an antenna diameter of 180 cm
Coverage / Cycle Global coverage twice/day
Mass 220 kg Power 170 W Data Rate 400

 

Providing Agency CMA
Instrument Maturity Flown on operational programme
Utilization Period: 2023 to 2033
Last update: 2025-01-29
Detailed characteristics

Channel Number Central frequency (GHz) Bandwidth (MHz) Polarisations NEΔT IFOV Pixel
1 10.65 180 V, H 0.5 K 27 x 45 km 4 x 14 km
2 18.7 200 V, H 0.5 K 18 x 30 km 4 x 14 km
3 23.8 400 V, H 0.5 K 17 x 29 km 4 x 14 km
4 36.5 900 V, H 0.5 K 11 x 18 km 4 x 14 km
5 50.3 400 V, H 0.5 K 9 x 14 km 4 x 14 km
6 52.61 400 V, H 0.5 K 9 x 14 km 4 x 14 km
7 53.24 400 V, H 0.5 K 9 x 14 km 4 x 14 km
8 53.75 400 V, H 0.5 K 9 x 14 km 4 x 14 km
9 89 3000 V, H 0.5 K 7 x11 km 4 x 14 km
10 118.7503±3.2 2 x 500 V 0.8 K 6 x 10 km 4 x 14 km
11 118.7503±2.1 2 x 400 V 0.8 K 6 x 10 km 4 x 14 km
12 118.7503±1.4 2 x 400 V 0.8 K 6 x 10 km 4 x 14 km
13 118.7503±1.2 2 x 400 V 0.8 K 6 x 10 km 4 x 14 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

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
  • Atmospheric temperature
  • Cloud liquid water (CLW) total column
  • Integrated Water Vapour (IWV)
  • Precipitation (liquid or solid)
  • Sea-ice cover
  • Wind speed (near surface)
Evaluation of Measurements