Microwave humidity sounder
- Microwave humidity sounder
-
The Microwave Humidity Sounder (MHS) is an instrument launched on NOAA's POES satellite series starting with NOAA-18 launched in May 2005 and European Space Agency's MetOp series starting with MetOp-A launched in October 2006. It is a five-channel passive microwave radiometer, with channels from 89 to 190 GHz. It is very similar in design to the AMSU-B instrument, but some channel frequencies have been altered. It is used to study profiles of atmospheric water vapor and provide improved input data to the cloud-clearing algorithms in IR/MW sounder suites.
The Microwave Humidity Sounder has been designed and developed by Astrium EU in Portsmouth UK, under contract to EUMETSAT.
Instrument Characteristics
- Heritage: AMSU-B, HSB
- Swath: 1650 km
- Spatial resolution: 17 km horizontal at nadir
- Mass: 63 kg
- Duty cycle: 100%
- Power: 74 W (BOL)
- Data rate: 4.2 kbit/s
- Field of View: ± 49.5 degrees cross-track
- Instrument Instantaneous Field of View: 1.1 degrees circular
Table 1: Radiometric characteristics of the MHS
| Channel Number |
AMSU-B
Channel Number
|
Frequency
(GHz) |
AMSU-B Frequency
(GHz) |
Bandwidth
(MHz) |
Instrument Sensitivity
NEDT (K) |
Polarization |
| 1 |
16 |
89.0 |
89.9 ± 0.9 |
2800 |
0.22 |
Vertical |
| 2 |
17 |
157.0 |
150 ± 0.9 |
2800 |
0.34 |
Vertical |
| 3 |
18 |
183.311 ± 1.00 |
183.31 ± 1.00 |
2 x 500 |
0.51 |
Horizontal |
| 4 |
19 |
183.311 ± 3.00 |
183.31 ± 3.00 |
2 x 1000 |
0.40 |
Horizontal |
| 5 |
20 |
190.311 |
183.31 ± 7.00 |
2200 |
0.46 |
Vertical |
External links
Categories:
- Spacecraft instruments
- Satellite meteorology and remote sensing
- Earth observation satellites
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