METEOROLOGY — THEORY 209 
where height A. Strictly, 7 should be calculated from equa- 
Po = barometric pressure at sea level, tion (9). However, it turns out that p is rather insen- 
¢ = natural logarithmic base, sitive to T, and that, except perhaps where high accu- 
@ = 0.034163, racy is desired, it is sufficient to replace equation (9) 
and with 
T= ; i be T(h)dh. (9) Hs a +0, (10) 
. where AT’ = T,, —T and T, is the temperature at the 
T is thus the average temperature from h = 0 to the surface. 
Taste 3C. H fort from —10 C (+14 F) to 0 © (82 F); h to 2,000 m (6,562 ft). 
po = 1,000 mb at sea level 
14.0 15.8 17.6 19.4 21.2 23.0 24.8 26.6 28.4 30.2 32.0 We 
tF 
Taste 3D. H fort from 0 C (32 F) to 10 C (50 F); h to 2,000 m (6,562 ft). 
po = 1,000 mp at sea level 
Ye 4 
0.0 
32.8 
65.6 
98.4 
131.2 
164.0 
248.1 
328.1 
492.1 
656.2 
820.2 
984.3 
1,148.0 
1,312.0 
1,476.0 
1,640.0 
1,969.0 
2,297.0 
2,625.0 
2,953.0 
3,281.0 
4,921.0 
6,562.0 
32.0 33.8 35.6 37.4 39.2 41.0 42.8 44.6 46.4 48.2 50.0 \ x (ft) 
iF 
