METEOROLOGICAL TABLES. 



27b 



Table 17 M. Change of topographic charts of isobaric surfaces into isobar ic charts 



in level surfaces. 



I. Height of the iooo m-bars Surface (Dynamic Meters). 



II. Height of the 900 m-bars Surface (Dynamic Meters) 



Example 1. Given the topographic and isothermic charts of the 1000 m-bar surface. Required the course of the 

 1025 m-bar curve in sea-level. 

 To the pressure 1025 m-bars in table 17 M (1) corresponds height 1S6 dynamic meters for temperature io C. ; 

 height 193 dynamic meters for temperature o C. ; height 200 dynamic meters for temperature 4- io C. ; 

 and so on. The required curve runs through the points of intersection of the isothermic curve 

 io C. with the level curve 1S6 dynamic meters ; of the isothermic curve o C. with the level curve 

 193 dynamic meters ; of the isothermic curve +10 C. with the level curve 200 dynamic meters ; and 

 so on. 



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