BackForwardInstrument:  MWTS-2 

Instrument details
Acronym MWTS-2
Full name Micro-Wave Temperature Sounder - 2
Purpose Temperature sounding in nearly-all-weather conditions
Short description
  • 13 frequencies, 13 channels [see detailed characteristics below]
  • Calibration monitoring here
Background

Evolution of MWTS-1 flown on FY 3A and 3B
Scanning Technique

Cross-track: 30 steps of 32 km s.s.p., swath 2250 km
Resolution 32 km at s.s.p.
Coverage / Cycle Near-global coverage twice/day
Mass Power Data Rate

 

Providing Agency CMA
Instrument Maturity Backed by strong heritage
Utilization Period: 2014 to 2025
Last update: 2025-01-29
Detailed characteristics

Channel number

Central frequency (GHz)

Bandwidth (MHz)

Polarisation

NEΔT

1

50.30

180

QH

1.5 K

2

51.76

400

QH

0.9 K

3

52.8

400

QH

0.9 K

4

53.596

400

QH

0.9 K

5

54.40

400

QH

0.9 K

6

54.94

400

QH

0.9 K

7

55.50

330

QH

0.9 K

8

57.290

330

QH

0.9 K

9

57.290 ± 0.217

78

QH

1.5 K

10

57.290 ± 0.322 ± 0.048

36

QH

1.5 K

11

57.290 ± 0.322 ± 0.022

16

QH

2.3 K

12

57.290 ± 0.322 ± 0.010

8

QH

3.0 K

13

57.290 ± 0.322 ± 0.0045

3

QH

4.5 K
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
  • Cross-track, special or non-scanning microwave radiometer
WIGOS Subcomponents
  • Subcomponent 1
  • MW sounders [in SSO]
  • MW sounder [in SSO]
  • MW cross-track upper stratospheric and mesospheric sounders
  • MW cross-track upper stratospheric and mesospheric sounder
Mission objectives
Primary mission objectives
  • Atmospheric temperature
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.
VariableRelevance for measuring this variableOperational limitationsExplanation
Atmospheric temperature*1 - primaryCoarse vertical resolution.Many MW channels in the 54 GHz band. Nearly all-weather sounding
Downward long-wave irradiance at Earth surface5 - marginalHighly indirect.MW channels in bands 54 GHz to account for downward cloud radiation
Freezing level height in clouds3 - highNo specific limitation.MW channels in the 54 GHz band. Inference from the temperature profile
Melting layer depth in clouds3 - highNo specific limitation.MW channels in the 54 GHz band. Inference from the temperature profile
Precipitation intensity at surface (liquid or solid)5 - marginalNo specific limitation.MW channels in the 54 GHz band. Suitable for liquid precipitation over sea and land, Insensitive to surface emissivity
Upward long-wave irradiance at Earth surface5 - marginalHighly indirect.MW channels is the 54 GHz band to infer the impact of clouds on the upward LW radiation