258 Bigelow — Radiation in the Earth? s Atmosphere. 



Fig. 1. 



'•? 



C 















-l2.t 



So 

























&/ 







r /c 



OBO 































,~t 



00« 





















0/ 











-tf 



oco 















- + 



OCO 



/ 













-z 



/ 



/ 













2.0 j.« *« so eo •}• ' • /i 



In order to apply this function to the problem we can sub- 

 stitute in (5), noting now by log c and a those values of log C 

 and A which form a pair, and satisfy the equation, 



log K 10 = logc + a log T 10 (11) 



log K 10 = — 5'960 - 2-220 (A — 4) + a log T 10 (12) 



It is found by trial that the values of a in the atmosphere lie 

 between 3*50, the theoretical exponent for dry air, and 4*00, 

 the exponent in the Stefan Law for a radiating black body, 

 in which the Kurlbaum coefficient is a = 5*32 X (10) -4 , in 

 K.M.S. units and log a — — 4*7259. A working table for A 

 and log C will facilitate the computations. (Table 3.) 



In the equation for adjustment, 



log c = log K 10 - a log T ]0 , 



we have T 10 from direct observation and K 10 from computations 

 depending on T l5 T , and it is evidently necessary only to tind 

 the pair values (a, log c) by trial that will satisfy the given K 10 

 and log T 10 . 



