The Advanced Microwave Sounding Unit (AMSU-A), a 15-channel microwave sounder designed primarily to obtain temperature profiles in the upper atmosphere (especially the stratosphere) and to provide a cloud-filtering capability for tropospheric temperature observations. The first AMSU was launched in May 1998 on board the National Oceanic and Atmospheric Administration's (NOAA's) NOAA 15 satellite. The EOS AMSU-A is part of a closely coupled triplet of instruments that include the AIRS and HSB.
- Passive multi-channel microwave radiometer measuring atmospheric temperature.
- 15 channel microwave sounder with a frequency range of 15-90 GHz.\
- Provides atmospheric temperature measurements from the surface up to 40 km.
- On board NOAA K/L/M as well as Aqua.
|Responsible Center:||Jet Propulsion Laboratory|
|Heritage:||Microwave Sounding Unit (MSU)|
|Spatial Resolution:||40 km horizontal at nadir|
|Data Rate:||3.2 kbps|
|Thermal Control By:||Heater, central thermal bus, radiator|
|Thermal Operating Range:||0 to 20°|
|Field of View (FOV):||±49.5°|
|Instrument Instantaneous FOV:||3.3°|
|Pointing Requirements (platform+instrument, 3σ)|
|Physical Size:||65.5 x 29.9 x 59.2 cm (A1)
54.6 x 64.9 x 69.7 cm (A2)