HORIZONTAL AJJD VERTICAL HEAT EXCHANGE UNDER CLOUDY SKIES (CLOUD CODE 6-8) 



Calculation of horizontal and vertical heat exchange in the layer 

 to 20 feet for cloudy skies follows the same procediire as that 

 described above. The radiational budget is positive only betveen I30OZ 

 and I9OOZ, and a total of 60.85 gm cal/cin2 is available for absorption. 



TABLE 7 



NET AND ABSORPTrVE HEAT CHANGES FOR CLOUDY SKIES ( Cloud Code 6-8) 



(gm cal/cm^/hr) 



Hour : 



Net 



Radiation 



Budget 



0«-20' 



Net Measured Heat Change 

 20'-ltO' Uo'-6o' 60'-80' 



80' -100' 



0'-20' 



Measured 

 20 '-1*0' 



Absorptive 

 1*0 '-60' 



Heat Change 

 6o*-8o' 8o'-100' 



TOTALS 



13-U 



10.61 



-9.69 



-1'*.53 



-22.60 



-29.06 



-29.06 



6.1*6 



1.61 



-6.1*6 



0.00 



0.00 



1.61 



14-15 



15.56 



-20.99 



-29.06 



-to. 36 



-1*6.82 



-1*6.82 



1.61 



6.1*6 



i*.81* 



1.61 



-1.61 



12.91 



15-16 



7.78 



-25.83 



-30.68 



-37.11* 



-1*5.21 



-50.05 



3.23 



1.61 



1*.81* 



3.23 



1.61 



11*. 52 



16-17 



7.1*2 



-17.76 



-22.60 



-27.1*5 



-32.29 



-38.75 



1.61 



3.23 



1.61 



3.23 



3.23 



12.91 



17-18 



10.78 



-1.61 



-3.23 



-1.61 



-i*.8i* 



-11. 30 



1.61 



0.00 



-1.61 



i*.8l* 



1.61 



6.1*5 



18-19 



•KfTATS 



8.70 



l6.1if 



17.76 



22.60 



22.60 



16.11* 



0.00 



-1.61 



-3.23 



3.23 



3.23 



1.62 



13-19Z 60.85 -59.7I* -82. 3I* -106.56 -135.62 -159.81* 



ll*.52 11.30 -0.01 16.11* 



8.07 



50.02 



Hour 



Net After Removal of Absorption 



(Z) 0'-20' 20'-llO' l*0'-60' 6o'-8o 



13-11* -16.15 -16.11* -16.11* -29.06 



ll*-15 -22.60 -35.52 -1*5.20 -1*8.1*3 



-32.29 



15-16 -29. 



16-17 -19.37 -25.83 



17-18 -3.22 -3.23 



18-19 16.11* 19.37 



-1*1.96 



-29.06 



0.00 



25.83 



O'-lOO' 



29.06 



1*5.21 



.1*8.1*1* -51.66 



35.52 -1*1.98 

 -9.68 -12.91 

 19.37 12.91 



Horizontal Plus Evaporative and Sensitile 

 Heat Exchange 



0'-20' 20'-l*0' ltO'-60' 60'-80' 80'-100' 



-2U.92 -17.06 -16.66 -26.22 -29.17 



-35.1*7 -36.87 -1*5.96 -1*8.67 -1*5.37 



-35.1*9 -32.97 -1*2.31* -1*8.56 -51.71* 



-25.51 -26.1+7 -29.1*2 -35.63 -1*2.05 



-12.11* .4.17 -0.53 -9.81* .13.02 



8.95 18.61 25.1*0 I9.2I* 12.82 



TOTALS 



Q^oe 



-22.28 



-2.61* 



-1*1*. 22 



8.75 



-1*3.90 



8.U1 



-33.39 



7.88 



-6.89 



-5.25 



19.02 



-10.07 



-131.66 



Table 7 lists the values of heat exchange. Horizontal heat exchange 

 is much larger than vertical heat exchange and is generally negative. 

 Vertical heat exchange (evaporation plus sensible) is positive between 

 ll+OOZ and I7OOZ, indicating net condensation. The total vertical heat 

 exchange is only 7.08 gm cal/crn2. The heat exchange values are shown 

 in figure 6, which shows strikingly large values of horizontal heat 

 exchange . 



13 



