124 Table 39 



GEOSTROPHIC WIND, CONSTANT LEVEL SURFACE 



Three millibar isobars, air density 1 kg. m.~^ 



The scalar equation for the geostrophic wind on a constant level surface is 



fp dn 



where p is the pressure on a constant level surface, n is distance measured in the surface, 

 / is the coriolis parameter, p is the density of the air, and V , is the component of the 

 geostrophic wind normal to the direction in which n is measured. 



On a constant level surface with a 3 millibar isobaric interval and an air density of 

 1 kg. m." 8 (0.001 gm. cm. -3 ) this reduces to 



(To convert knots to other measures of speed see Table 35.) 

 (continued) 



SMITHSONIAN METEOROLOGICAL TABLES 



