Microwave sounding unit

Advanced Microwave Sounding Unit (AMSU) It is a 15-channel gauge to measure upper atmosphere temperature, radiation in the range 50 GHz to 60 GHz and at frequencies 23.8 GHz, 34.4 GHz, and 89 GHz, water vapor, and precipitation. Spatial resolution of 40 km-45 km. 

AIBS AIDS AIRS AMAP AMIP AMSR-E AMSU American Institute of Biological Sciences Acquired Immune Deficiency Syndrome Atmospheric InfraRed Sounder Arctic Monitoring and Assessment Program Atmospheric Model Intercomparison Project Advanced Microwave Scanning Radiometer for EOS Advanced Microwave Sounding Unit... 

The satellite-borne Microwave Sounding Unit (MSU) records lower stratospheric temperatures. Global mean increases of up to 1.4 K were apparent following both the Pinatubo and El Chichon eruptions due to the local heating of the volcanic aerosol (Parker et al., 1996). Interestingly, for the Pinatubo case, the temperature anomaly decreased as aerosol sedimented back into the troposphere, and, by early 1993, below average, lower stratospheric temperatures were observed. This could be due to cooling coincident with the destruction of stratospheric ozone (Section 3.04.6.2.2). 

Ultrasonic movement detectors utilize the principle of the Doppler effect on high-frequency sound waves. Ultrasonic movement detectors do not penetrate solid objects, but have smaller volume of coverage than microwave movement detectors. These units may also be affected by moving hot or cold air pockets in a room. 

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