no. 3 



RADIATION OF THE ATMOSPHERE ANGSTROM 



47 



well as the expression given in connection with the discussion of 

 the values obtained at Bassour, but it is better adapted to include in 

 a general relation all the observations at different altitudes. As may 

 be seen from the figure, the deviation from the curve is often consid- 

 erable for single groups of values, but this can easily be explained 

 as being due to deviations of the state of the atmosphere from its 



Fig. 5. — Humidity and Radiation of the Atmosphere. 



Circles represent observations at Indio. Double circles represent observa- 

 tions at Mount San Antonio and at Lone Pine Canyon. Crosses represent 

 observations at Lone Pine. Points represent observations at Mount San 

 Gorgonio and at Mount Whitney. 



normal conditions and also to the fact that the mean value is often 

 calculated from a few observations. 



It seems to me that the forrri of this curve enables us to draw some 

 interesting conclusions about the radiation from the different con- 

 stituents of the atmosphere. It must be admitted that the shape of 

 the curve in the investigated interval does not allow of drawing any 

 safe conclusions for points outside this interval, and particularly, 

 as will be shown further on, the curve does not approach a limiting 



