A à ces te AED. ans EEE ES CR SC SEES Toke ARAL NE SAR ER RR COMIS : a ian A a z Te a 
  
Fig.4 The distribution of concentrations of yellow sand dust over East Asia on April 8 
in the case that yellow sand paricles are released at 750hpa in height 
  
Fig.5 The distribution of concentrations of yellow sand dust over East Asia on April 6 
in the case that yellow sand paricles are released at 650hpa in height 
442 Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 
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