LOCAL 



NOON 



MIDNIGHT 



FIGURE 3 ABSORPTIVE HEAT EXCHANGE FOR CLEAR SKIES 

 (CLOUD CODE 0-2)(GM CAL/CMVHR) 



'Table 3 shows ^25.79 S^ cal/cn^ of radiation available for absorp- 

 tion in the 10 hours between lOOOZ and 2000Z, whereas the heat changes 

 measured in the various layers amounted to 261.57^ l82o45, llk.Ghf 90.^4, 

 and 88.80, or a net value of 737*90 gm cal/ciii2. The measured values rep- 

 resent some heat that was measured more than once; as heat changes pro- 

 gressed downward, they were recorded in a given layer at one time anr in 

 another layer at a later time. In addition, the measured values include 

 short-term horizontal and vertical motion. Therefore, the measured values 

 are of little use in determining total absorption. Absorption in a layer 

 appears as a change in temperature gradient within the layer. By calcu- 

 lating the changes in gradient, the hourly absorption values are found 

 and presented in table 3- 



The first step in determining horizontal and vertical heat transport 

 is to subtract the absorption from the net measured heat changes. Table 

 k shows the results. The first five columns of table h contain the net 

 heat changes after removal of absorption. Table 3 gives the amount of 

 radiation available for absorption. Using the values of table 27 of 

 Sverdjrup, Johnson, and Fleming (reference 8), adjusted to 20-foot layers, 

 82.70 percent of the radiation should be absorbed in the layer from to 

 20 feet; 8.68 percent in the layer 20-4o feet; ^.90 percent in the layer 

 kO-60 feet; I.52 percent in the layer 6O-80 feet; and 1.00 percent in the 

 layer SO-100 feet. Subtracting- the'' appropriate percentage of the net 



