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The Advanced Microwave Radiometer-C (AMR-C) is a multi-spectral passive microwave radiometer used to correct the radar altimeter instrument measurement aboard the Sentinel-6/Michael Freilich platform. The radiometer accounts for the amount of water vapor in the atmosphere, which affects the speed of the altimeter’s radar pulses. The Sentinel-6/Michael Freilich platform will continue sea surface height measurements which have been acquired by the Topex-Poseidon and Jason missions since the 1990s.

This is a poster showing past, present and future altimetry missions.

The altimeter mission series orbiting the Earth has been active since the 1990s. 

Instrument Type

Spectrometers/Radiometers

Instrument Subtype

Radiometers

Specifications

Resolution

Spatial
41.6 km at 18.7 GHz, 36.1 km at 23.8 GHz, 22.9 km at 34 GHz baseline channels with 5km for higher frequency experimental channels
Spectral

3 Bands: 18.7, 23.8 and 34 GHz. With additional experimental high-frequency channels (90, 130, 168 GHz)

Temporal

10 days

Platforms

Sentinel-6 Michael Freilich

Launch Date
November 21, 2020
Temporal Extent
Nov. 21, 2020 - present
Altitude
1,336 km
Inclination
66.04°

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