Table 146 433 



TRANSMISSION OF SOLAR RADIATION BY THE ATMOSPHERE, 5.5-22/* 



Adel and Lampland 1 investigated the atmospheric transmission of solar radiation at 

 the Lowell Observatory, Flagstaff, Ariz., for varying amounts of precipitable water in 

 the atmosphere. The latter was determined spectroscopically by the method of Fowle. 2 

 The term precipitable water as used here refers to the water-vapor content along the 

 path traversed by the radiation. 



Part A. — Percent transmission in the region 5.5-8.0/*. 



8.0 



44.6 



47.8 



54.8 



52.4 



60.7 



63.1 



Notes: 



Column I, precipitable water 10.2-10.0 mm 



II, 

 HI, 

 IV, 



V, 

 VI, 



6.0- 5.9 

 4.7- 4.6 



3.1- 3.0 

 2.1 

 1.1- 1.0 



optical air mass not specified 



Decrease in transmission due principally to H 2 0; above 7.5/t bands due to nitrogen 

 oxides are superimposed. 



1 Adel, A., and Lampland, C. O., Astrophys. Journ., vol. 91, p. 1 and p. 481, 1940. 

 •Fowle, F. E., Smithsonian Misc. Coll., vol. 68, No. 8, 1917. 



(continued) 



SMITHSONIAN METEOROLOGICAL TABLES 



