an deserts. 
over East 
icles were 
dain Jaran 
elt of high 
s from the 
results of 
s that are 
| particles. 
‘East Asia 
| in Figs.4 
(OSA 
channel is 
| the Kosa 
/P11), the 
"incident 
ila, where 
en 1974). 
the shape 
> the size 
r -4 was 
¢ of Kosa 
Japan the 
its value 
the size 
the value 
)) particle 
ution. 
3 channel 
nel (Ps)sss 
and 140 
r2. As a 
n the case 
greement 
zes in the 
in 1981 
low sand 
> radius 2 
POLDER 
of yellow 
/PODER 
ization at 
the 865 
| 110 and 
1e size of 
| was also 
| that the 
high density Kosa cloud moves from the main land of 
China to the western part of Japan, and that almost all part 
of East Asia is covered with the hazy Kosa layer during 
Kosa events. 
REFERENCES 
Kai K. et al. 1988, Lidar Observation and Numerical 
Simulation of a Kosa (Asian Dust) over Tsukuba, Japan 
during the Spring of 1986, J. Meteor. Soc. Japan, Vol.66, 
pp.457-472. 
Arao, K and Y. Ishizaka, 1986, Volume and Mass of 
Yellow Sand Dust in the Air over Japan as Estimated from 
    
  
Atmospheric Turbidity, J. Meteor. Soc. Japan, Vol.64, 
pp.79-93. 
POLDER Level 1 Product Data Format and User Manual, 
1997, CNES, France. 
Report of Environmental Atmospheric survey, 1995, 
Ishikawa, Japan. 
Hansen, J. E. and L.D. Travis, 1974, Light Scattering in 
Planetary Atmosphere, Space Sci. Rev., 16, pp.527-610. 
Tanaka, M. et al, 1983, Refractive Index and Size 
Distribution of Aerosols as Estimated from Light Scattering 
Measurements, J. Climate Appl. Meteor., 22, pp.1253- 
1261. 
Fig.] POLDER image taken on April 12, 1997 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
80 
© 
[s 0] 
3 
£50 
.9 
540 
6 
'o30 
a 
20 
10 
Ge 
0 100 110 120 130 140 150 160 170 180 
Scattering Angle(^ ) 
Fig.3 Profiles of polarization (%) versus the scattering angle on the principal plane 
of POLDER data taken on Apri! 12, 1997 
Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 441