G. I. TAYLOIi ON EDDY MOTION IN THE ATMOSPHERE. 



19 



In order more easily to compare the theoretical results with the observations the 

 curves shown in fig 4. have been prepared. Fig. 4 shows the way in which wind 



Fig. 4. 

 Calculated Curves 



2 -* < -a 



WIND VELOCITY IN FRACTIONS OF GRADIENT 



BZ 



2O* 10 



WIND DIRECTION 



Fig. 5. 



Observed Curves 



METRES 



2400 



2000 



O 2 4 6 8 10 12 14 



WIND VELOCITY IN METRES PER SECOND 



800 



20* 10* 



WIND DIRECTION 



velocity and direction vary with height in the theoretical case we have been con- 

 sidering when a. = 20 degrees. Fig. 5 is reproduced by permission of Mr. DOBSON. It 



D 2 



