61-2 



Sir Napier Shaw 



[March 10, 



OhservaUons in the Upper Air in Relation to the 

 Convection Theory. 



But the greatest blow to the illusion that I have portrayed comes 

 directly from the observations of the upper air ; the convection 

 theory requires that the air of the cyclone should be warmer than 

 that of the anticyclone, but, as a matter of fact, the new observations 

 show that the- opposite is the case. 



DISTRIBUTION OF TEMPERATURE AND PRESSURE IN CYCI_C3NES 



AND ANTICYCLONES 



MEAN VALUES AFTER W. H DINES. 



solid curves indicate temperature in decrees absolute [273' a. being 



the freezing point of water] 



broken curves indicate pressure in millibars [looo" beinc the ccs. 



at.viosphere] 



Fig. 4. — Diagram showing the normal distribution of temperature 

 and pressure in the upper air in relation to the distribution of pressure 

 at the surface, which is indicated by isobars on a foreshortened map 

 at the foot of the diagram. 



In a paper published by the Royal Society Mr. W. H. Dines* 

 gave the mean values of the observations of temperature in the upper 

 air of this country arranged according to the pressure at the ground. 

 From his results the following table has been compiled. The figures 



See M.O. publications 210b, Geophysical Memoirs, No. 2. 



