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          DESCRIPTION: Composite Reflectivity is the maximum
         base reflectivity value that occurs in a
         given vertical column in the radar umbrella. NEXRAD scans in
         several pre-defined "volume coverage patterns (VCPs), where
         the radar makes a 360-degree horizontal sweep with the radar
         antenna tilted at a given angle above the horizontal, then
         changes the elevation angle, and completes another
         360-degree sweep, and so on. Composite reflectivity gives a
         plan view of the most intense portions of thunderstorms, and
         can be compared with Base Reflectivity
         to help determine the 3-D structure of a thunderstorm. 
         
         GENERAL INTERPRETATION: 		
			    Schematic of Composite Reflectivity
			    Composite Reflectivity vs. Base Reflectivity
			   
			 Cell-based VIL vs Grid-based VIL
          USING COMPOSITE REFLECTIVITY IN SEVERE WEATHER: 		
			    Composite Reflectivity and Hail 
			    Mesocyclone Algorithm 
			    Tornado Detection Algorithm 
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