Abstract
NASDA conducted field experiment using Bread-Board Model (BBM) of MOS-1 MSR (Microwave Scanning Radiometer) for the water vapor, snow and others during 1981 FY-1983 FY. NASDA con-ducted MOS-1 airborne experiment using Engineering Model (EM) of MOS-1 MSR during 1984 FY-1985 FY. After the launch of MOS-1 (Feb. 19, 1987), NASDA conducted MOS-1 Verification Program (MVP) experiment using satellite, airborne data and others during 1987 FY-1989 FY. These experi-ments were conducted in collaboration with many participating organizations. As a result of these experiments, MSR data are found to be effective in monitoring water vapor, liquid water in cloud, ice concentration, ice distribution and snow depth. NASDA is a member of SAFISY (Space Agency Forum on International Space Year) and responsible for sea surface temperature and polar ice extent where MSR plays an important role. Ice concentration is measured under all weather condition. NASDA is developing AMSR (Advanced Microwave Scanning Radiometer). This is a candidate sensor for ADEOS-II which will be scheduled for launch in 1998. In this paper, outline of utility of microwave radiometer in earth environment monitoring is presented and several technical items are studied.
