69 



CHAPTER VIII. CLOUDS 

 CONTENTS 



Page 



General 71 



Determination of Sky Cover 71 



General 71 



Sky Quadrants 71 



Obscured Sky 71 



Cloud Height 71-72 



Coding and Entries of Cloud Data on Form 615-5 72 



Total Cloud Amount (N) 7 2 



Fraction of the Celestial Dome Covered by Specified C^ 



or Cm Cloud - (Nh) 72 



Height of Lowest Cloud of Types C^ or C^ -(h) 73 



Clouds of Type Cl 74-75 



Clouds of Type Cm 76-77 



Clouds of Type Ch 78-79 



Cloud Group 80 



CODE TABLES 



Code Table 3. Symbol N- -Fraction of the Celestial Dome 



Covered by Clouds, in Eighths 73 



Code Table 3. Symbol Nj^--Fraction of Celestial Dome Covered 



by Cloud Reported for Cl (or Cm) • • • • 73 



Code Table 9. Symbol Cl — Clouds of Types Stratocumulus, 



Stratus, Cumulus, and Cumulonimbus . 7 5 



Code Table 10. Symbol h — Height of Base of Lowest Cl (or Cm) 



Cloud Above Sea 73 



Code Table 11. Symbol Cm — Clouds of Types Altocumulus, Alto- 

 stratus, and Nimbostratus 77 



Code Table 12. Symbol CH--Clouds of Types Cirrus, Cirrostratus, 



and Cirrocumulus 79 



