x smithsonian meteorological tables 



Table Page 

 132-134. Total solar radiation at the top of the atmosphere (explana- 

 tion) 417 



132. Total daily solar radiation at the top of the atmosphere 418 



133. Total annual and seasonal solar radiation at the top of the at- 



mosphere 418 



134. Chart of the total daily solar radiation at the top of the atmosphere. 419 

 135-136. Total direct solar radiation reaching the ground with various 



atmospheric transmission coefficients (explanation) 420 



135. Total daily direct solar radiation reaching the ground with various 



atmospheric transmission coefficients 421 



136. Total annual and seasonal direct solar radiation reaching the ground 



with various atmospheric transmission coefficients 422 



137. Optical air mass corresponding to different zenith distances of the 



sun 422 



138. Absorption of radiation by water vapor, 10-25/x 423 



139. Absorption of radiation by water vapor, 1.3-9/u. 425 



140. Transmission of solar radiation by water vapor, 0. 7-2.2/* 425 



141. Absorption of radiation by carbon dioxide 427 



142. Absorption of radiation by ozone 428 



143. Absorption coefficients of oxygen 430 



144. Transmission of radiation through pure, dry air 431 



145. Scattering of solar radiation by water vapor 432 



146. Transmission of solar radiation by the atmosphere, 5.5-22/* 433 



147. Transmission of solar radiation through moist air 436 



148. Spectral distribution of solar radiation at sea level 438 



149. Total solar and sky radiation on a horizontal surface during cloud- 



less conditions 438 



150. Relation between the vertical component of direct solar radiation 



and total solar and sky radiation on a horizontal surface 439 



151. Relation between average sunshine and solar radiation on a hori- 



zontal surface 440 



152. Transmission of solar radiation through clouds (overcast) 441 



153. Relation between illumination and total radiation 442 



154. Albedo of various surfaces 442 



155. Reflectivity of a water surface 444 



156. Absorption of radiation by pure liquid water : . 445 



157. Absorption of radiation by sea water 446 



158. Scattering area coefficients for water drops in air 446 



159. Relative spectral luminosity for the human eye at various luminance 



levels •. 448 



160. Horizontal visibility 452 



