WORKING NON-ADIABATIC EQUATIONS 
53 
The Working N on-Adiabatic Equations 
(182) Pressure, log P x - log P 0 = (log T x - log T 0 ). 
(183) Density, log Pl - log p 0 = (log T 1 - log T 0 ). 
(184) Gas coefficient, log Pi — logP 0 = (n-1) (log T x - log T 0 ). 
These equations were published in the Monthly Weather 
Review, March, 1906, (38), (39), (40), and they have been 
illustrated by numerous applications to balloon and kite ascen 
sions with excellent results, up to great altitudes, as 20,000 
meters. The following example shows the method of arranging 
the computation so as to proceed from level to level, the com 
puted Pi, pi, Pi of one becoming P 0 , p 0 , P 0 for that next above 
it. The example is taken at random from our computations, 
some of the results being compiled in Bulletin No. 3, Argentine 
Meteorological Office, 1913. The constants are taken from 
Table 3 in the (M. K. S.) system. The surface values of P 0 , P o, 
P 0 , T 0 are assumed to conform to the adiabatic system, while Pi, 
Pi, Pi, Pi above the surface are computed by the non-adiabatic 
system. 
At the height z = 116 meters the density is computed from 
the adiabatic formula, 
P 
P ~ TRo 
Also, P = go P m Po, where P 0 is in meters. It will be noted 
that the check is complete. It may be stated that the ob 
served values of P 0 at Lindenburg are usually about 1 mm. 
higher than the computed values B c . This constitutes a cri 
terion upon the adjustment of the aneroid, which, in ascending, 
lags in registration and records a pressure corresponding to 
a lower level than that assumed for the temperature T at the 
height z.