AEROGRAPHER'S MATE 3 & 2 



I200Z AUG 10 1966 



73. 300MB NMC AUNA3 7S 



Figure 11-41. — Example of an Upper Air Analysis facsimile chart. 



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display purposes, naval weather units normally 

 shade the plain outlined areas in red and the 

 scalloped outlined areas in blue. 



3. Radar summary charts show the distri- 

 bution of the echoes reported on hourly radar 

 reports. These charts indicate the location, 

 coverage, tops, and movement of the echoes. 



4. Charts are received containing tropopause 

 heights, temperatures, and wind direction and 

 velocity for selected stations in the United 

 States. 



5. An increasingly large number of the 

 weather charts currently in use by the Naval 

 Weather Service are prepared by numerical 



methods, using electronic digital computers 

 (EDC). Some of these computers and their prin- 

 ciples of operation were mentioned briefly in 

 chapter 9 of this manual. The Naval Environ- 

 mental Data Network (NEDN) and the facsimile 

 network used in the dissemination of these 

 numerical products are discussed in chapter 7 

 of this manual. The NEDN is used to distri- 

 bute the numerical products originating at Fleet 

 Numerical Weather Central, Monterey, Califor- 

 nia, and the (NAMFAX) is used for numerical 

 products originating at the National Meteorologi- 

 cal Center (NMC), Suitland, Maryland, 



6. Other charts used by Naval Weather 

 Service units include the freezing level 

 chart, which indicates the height of the 



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