526 



SMITHSONIAN METEOROLOGICAL TABLES 



Scale variation of map projections, 485 

 Scattering (of radiation), dry air, 431 



water drops, 446-447 



water vapor, 432 

 Sea ice, latent heat, 405 



specific heat, 406 

 Sea level, reduction of pressure to, 203-213 

 Sea water, absorption of radiation by, 446 



melting point and specific heat, 406 

 Seconds, conversion to decimals of hour 

 and day, 106-107 



mean solar and sidereal, conversion fac- 

 tors, 11 

 Sidereal time units, 11 

 Sky, radiation, 420 

 Smoke, particle size and rate of fall, 397- 



398 

 Snow, albedo of, 443 



thermal conductivity and diffusivity, 

 404 

 Snow gages, conversion of weight to depth 



of water, 407 

 Soils, conductivity, density, specific heat, 



405 

 Solar altitude, 497-505 

 Solar constant, 414 

 Solar ephemeris, 495-496 

 Solar radiation. (See Radiation.) 

 Solar time, mean and true, 495-496 

 Solution droplets, equilibrium supersatura- 



tion, 374-379 

 Sound, velocity of, in air, 390-393 



NACA upper atmosphere, 283-284 

 Specific heat, dry air, 289 



ice, 289, 343 



residual, moist air, 339 



residual, water vapor, 341-342 



sea ice, and sea water, 406 



soils and rocks, 405 



water, 289, 343 



water vapor, 289 

 Specific humidity, definition, 347 

 Specific volume, conversion factors, 12 

 Spectral distribution of solar radiation, 416 

 Spectral luminosity, 448-452 

 Speed, conversion factors, 11-12 



conversion tables, 110-116 

 Standard atmosphere. (See Atmosphere, 



standard.) 

 Statute mile. (See Mile, statute.) 

 Stefan-Boltzman law, 411 

 Stilb, 16 

 Stokes law, 397 

 Stone, conductivity, density, specific heat, 



405 

 Sublimation, latent heat of, water, 343 



Sun, altitude and azimuth, 497-505 



ephemeris, 495-496 

 Surface tension, mercury, 135 



Temperature, adjusted virtual, 295-296 

 along pseudoadiabats, 318-322 

 condensation, 328-330 

 conversion formulae, 17 

 conversion tables, 17-28 

 correction for altimeter reading, 274- 



279 

 correction for mercurial barometers 

 and manometers, English units, 139- 

 163 

 explanation, 136-138 

 metric units, 164-199 

 dew point, definition, 347 

 differences, conversion table, 29 

 equivalent, 349 

 frost point, definition, 348 

 lapse rate, conversion table, 30 

 mean, between standard isobaric sur- 

 faces, 241-255 

 potential, 308-313 

 thermodynamic, 332 

 virtual, 295 



wet-bulb, definition, 348 

 Terminal velocity, atmospheric particle, 397 



water droplets in air, 396 

 Thermodynamic constants, 289 

 Thermodynamic equivalent temperature, 349 

 Thermodynamic properties of moist air, 



331-343 

 Thermodynamic temperature, 17, 332 

 Thickness between standard isobaric sur- 

 faces, 241-255 

 Time, conversion factors, 11 



conversion tables, 102-107 

 Ton, conversion factors, 12 

 Tonne, conversion factors, 12 

 Transmission, atmospheric, 433-436 

 dry air, 431 

 moist air, 436-437 

 Transmissivity, 452-478 

 Twilight, astronomical and civil, 506, 517- 

 520 



U. S. standard atmosphere. (See NACA 



standard atmosphere.) 

 Upper atmosphere, NACA standard, 280- 



284 

 physical properties, 281 



Vapor, water. (See Water vapor.) 

 Vapor concentration, definition, 347 



