Advanced microwave sounding unit
The advanced microwave sounding unit (AMSU) is a multi-channel microwave radiometer installed on meteorological satellites. The instrument examines several bands of microwave radiation from the atmosphere to perform atmospheric sounding of temperature and moisture levels.
Flooding from Hurricane Isidore shown by AMSU channel 2
A microwave radiometer (MWR) is a radiometer that measures energy emitted at one millimeter-to-metre wavelengths (frequencies of 0.3–300 GHz) known as microwaves. Microwave radiometers are very sensitive receivers designed to measure thermally-emitted electromagnetic radiation. They are usually equipped with multiple receiving channels to derive the characteristic emission spectrum of planetary atmospheres, surfaces or extraterrestrial objects. Microwave radiometers are utilized in a variety of environmental and engineering applications, including remote sensing, weather forecasting, climate monitoring, radio astronomy and radio propagation studies.
Humidity and Temperature Profiler (HATPRO-SUNHAT) at the Barbados Clouds Observatory.
Microwave Radiometer calibration performed by employees of Research Center of R&D in Optoelectronics, Magurele (Romania).
Time series from 14 April 2015 for (a) brightness temperatures measured at 7 different frequencies in the K (right) and V (left) bands, (b) retrieved vertically Integrated Water Vapor (IWV) and cloud Liquid Water Path (LWP), (c) temperature profiles from 0 to 5 km, (d) absolute humidity profiles from 0 to 5 km.