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WATER SURFACE CONDITION AND TWO CHANNEL 
MICROWAVE MEASUREMENTS 
by 
K. TSUCHIYA 
S. YAMAMOTO 
C. ISHIDA 
NASDA 
JAPON 
and 
I. ISOZAKI 
METEOROLOGICAL RESEARCH INSTITUTE 
JAPON 
Abstract 
Two channel scanning microwave radiometer (23.8 GHz and 31.4 GHz) 
will be installed in Japanese Marine Observation Satellite (MOS)-1 to 
be launched in 1987. In order to find out the feasubility of sea surface 
observation with this radiometer experimental observations were made 
continuously for 10 days over a pool made within the site of Meteorological 
Institute. 
Radiance temperature was measured both in vertical and horizontal 
polarization over the water surface for different meteorological condition 
changing incident angle. A special emphasis was put on obtaining the 
relationship between radiance temperature and surface roughness thus the 
result can be compared with Stogryn and Hollinger's theoretical values. 
Since the observation was made at 15° interval by changing polarization 
angle, influence of polarization angle can be obtained. 
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