Past studies of passive microwave measurements of precipitating systems have yielded broad empirical relationships between hydrometeors and microwave transmission. In general, these relationships fall into two categories of passive microwave precipitation retrievals rely upon the observed effect of liquid precipitation to increase the brightness temperature of a radiometrically cold background such as an ocean surface. A scattering-based method is based upon the effect that frozen hydrometeors tend to decrease the brightness temperature of a radiometrically warm background such as land. One step toward developing quantitative brightness temperature-rain rate relationships is the recent construction of a new aircraft instrument sponsored by National Aeronautics and Space Administration/Marshall Space Flight Center (NASA/MSFC). This instrument is the Advanced Microwave Precipitation Radiometer (AMPR) designed and built by Georgia Tech Research Institute to fly aboard high altitude research aircraft such as the NASA ER-2. The AMPR and its accompanying data acquisition system are mounted in the Q-bay compartment of the NASA ER-2.
Advanced Microwave Precipitation Radiometer: A New Aircraft Radiometer for Passive Precipitation Remote Sensing
1991
2 pages
Report
Keine Angabe
Englisch
Meteorological Instruments & Instrument Platforms , Meteorological Data Collection, Analysis, & Weather , Aeronautics & Aerodynamics , Microwave radiometers , Precipitation (Meteorology) , Airborne equipment , Microwave transmission , Microwaves , Ocean surface , Remote sensing , Brightness , Brightness temperature , Data acquisition , High altitude , Scanners , U-2 aircraft