(K) 
Brightness Temperature 
Brightness Temperature (K) 
  
  
  
  
   
  
  
Net 
N 
  
  
  
  
f V 1 T 
snow depth 66cm 220—— pr eee 
210} EN ER sis 7 23 GHz 
TN — 25 J 
x NE 
^N ~ 
\ 
200} ON - 9 
a 
© 210r 
190 ET 
P 1 9 200r 3l e incu zl 
u ode oT 0 S 
2 
180} 7 2 195. 1 
© 
= 
en incident ang. 15? 
170} J 
19 4 à à i à A 
0- 15. 30 45 60 75 90 
Polarization angle (deg) 
160 1 1 À A 
0 15 30 45 60 Fig. 6 Polarization angle dependence 
Incident Angle (deg) 
Fig. 5 Incident angle dependence 
of brightness temperature 
at 23 GHz/31 GHz 
220 
215 
of brightness temperature 
(0° corresponds to horizontal 
polarization and 90? vertical 
polarization respectively) 
  
  
  
e 
e 
e 1 
Temperature 
snow depth 66cm 
incident ang. 10° 
(deg) 
  
  
y Y Y 
  
  
    
  
  
  
  
. 23 H 
210r 3 -10 
oT A y Bij 
ass 7 E 
» a "S V o 20 ; 
As, A a. e 
Eae TA s ae A cel 
195} = 25 solar 
Bus 10 radiation - 
5S 
=e 
is 07712 14 ” po” = 016 i cM i6 . 18 
1982-1-22 Local Time 3 1982-1-22 Local Time 
Fig. 7 (a) 
Fig.^7 
(b) 
Fig. 7 Diurnal variation of (a) brightness temperature 
along with (b)air temperature, surface temperature 
and solar radiation