Abstract
By using atmospheric noise reception in the 5 mm−3 cm band, the atmospheric temperature-humidity profile, total water-vapour content and liquid-water content of cloud can be derived. A set of microwave radiometers operating in the 5 mm−3 cm band with 5 frequencies used in meteorology has been developed. The experimental results of remote sensing with 8-mm and 1.35-cm radiometers of total water-vapour content and liquid-water content, including the rain process, are presented and discussed in this note. The mean deviation between remote sensing of total water-vapour content in cloudy sky and data obtained by radiosonde is < 7%. The measurement of rain intensity by a combination of a microwave radiometer and a radar system has been studied. The developed 3-cm radiometer was combined with a Chinese-built 3-cm radar to detect the distribution of rainfall. The mean deviation of rain intensity measured by the radar-radiometer in comparison with those obtained by raingauge is 25%.
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