INDEX 



523 



Gages, depth of water by weight, 407 

 Gallon, British imperial, 11 



U. S. conversion factors, 10 

 Gas constant, dry air, ideal gas, and water 



vapor, 289 

 Geodetic constants, 481 

 Geodynamic meter, 217 

 Geometric height, conversion to geopoten- 



tial, 217-223 

 Geometric meters, conversion to geopoten- 



tial meters, 217-219, 220-221 

 Geopotential change corresponding to pres- 

 sure change, 256-259 



computation, 217, 224-240 



temperature correction, 238-240 



definition, 217, 224 



foot, definition, 217, 256 



meter, definition, 217, 224 

 Geopotential meters, conversion to geo- 

 metric height, 217-223 



conversion to geometric meters, 222-223 

 Geostrophic wind, formulae and tables, 120- 



125 

 Gradient wind, formulae and tables, 126-129 

 Grain, conversion factors, 12 



conversion to grams, table, 109 

 Gram, conversion factors, 12 



conversion table, 109 



conversion to grains, table, 109 



weight, conversion factors, 14 

 Gram-calorie, conversion factors, 14 



definition, 4 

 Grass, albedo, 443 

 Gravity, acceleration of, 488-494 



anomalies, 489 



computation of local values, 488-494 



correction, mercurial barometer, 200- 

 202 



potential, 217 



standard, definition of, 3-4 

 Ground, albedo, 442 



Heat, conversion factors, 14 

 latent, sea ice, 405 

 water, 343 

 Heat, specific. (See Specific heat.) 

 Hefner unit, 16 

 Height, dynamic, 217, 224 

 Height change corresponding to pressure 



change, 256-259 

 Height computations. (See Geopotential 



computations.) 

 Height determination by barometer, 203-213 

 Height difference between standard isobaric 



surfaces, 241-255 

 Horizontal visibility, 452-478 

 Horse power, 15 



Hour, definition of mean solar, 11 

 Hours, conversion to angles, 105 



conversion to decimals of a day, 106 

 Humidity, absolute: 



correction for the reduction of pressure 

 to sea level, 204, 206 



definition, 347 

 Humidity, relative: 



computation from psychrometric data, 

 365-369 



definition, 331-332 



over salt solutions, 380 

 Humidity, specific, definition, 347 



ICAN standard atmosphere, 268 

 Ice, density, 404 



saturation vapor pressure, English 

 units, 362-364 

 metric units, 360-361 

 sea, latent heat, 405 



specific heat, 406 

 specific heat, 343 



thermal conductivity and diffusivity, 

 404 

 Ice point, absolute temperature, 289 

 Illumination, in relation to radiation, 442 



units and conversion factors, 15-16 

 Impurities, effect of, on saturation vapor 



pressure, 374 

 Inch, conversion factors, 9-10 



conversion to millimeters, 72-78 

 Inch of mercury, conversion factors, 13 



conversion tables, 31-37 

 Inch of water, 14 

 Index of refraction, air, 389 

 Inertial motion, 130 

 Intensity of solar radiation, 415 

 Interaction coefficients, air and water vapor, 



393 

 International ellipsoid, 481 

 International steam tables — calorie, 4, 14 

 Ions, size, 397-398 



Isobaric specific heat residual, moist air, 

 339 

 water vapor, 341 

 Isobaric surfaces, thickness between, 241- 



255 

 Isothermal elasticity coefficient, 390 



Joule, conversion factors, 14 



Kelvin temperature, conversion formulae, 



17 

 Kilogram, conversion factors, 12 



conversion tables, 108 

 Kilogram-calorie, 14 

 Kilogram-meter, 14 



