120 TABLE 37 



GEOSTROPHIC WIND, CONSTANT PRESSURE SURFACE 

 100 geopotential meter contours 



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



' f dn 



where $ is the geopotential in a constant-pressure surface, n is distance measured in the 

 horizontal direction, / is the coriolis parameter, and V „ is the component of the geostrophic 

 wind normal to the direction in which n is measured. 



On a constant pressure surface with contours drawn for intervals of 100 geopotential 

 meters (gpm.) this reduces to 



rr /, _. >> 0.017120 



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

 (continued) 



SMITHSONIAN METEOROLOGICAL TABLES 



