25 



r) 



20 



en 



I- 

 O 



15 



Q 

 u 

 u 

 ql 



CO 



Q 



Z 



10 



o 



o 



0.5 1.0 1.5 2.0 



MAXIMUM TEMPERATURE DIFFERENCE('t)- SURFACE TO BOTTOM 



FIGURE 18 

 EFFECT OF WiND ON DIURNAL TEMPERATURE GRADIENTS 



'3 



