56 
THERMODYNAMIC METEOROLOGY 
TABLE 15 
Comparison of the Pressures Computed by the Non-Adiabatic 
Formula and those Observed at Great Heights 
Heights 
in 
Meters 
Lindenburg 
May 5, 1909 
Lat. +52° 
Lindenburg 
July 27, 1908 
Lat. +52° 
Atlantic Ocean 
Sept. 9,1907 
Lat. +26° 
Atlantic Ocean 
June 19,1906 
Lat. -2° 
z 
Be 
B a 
Be- 
Bo 
Be 
B 0 
Be — 
Bo 
Be 
Bo 
Be — 
Bo 
Be 
Bo 
Bc-Bo 
19000 
18000 
.0589 
.0600 
-.0011 
17000 
.0679 
.0670 
+.0009 
.0692 
.0690 
+ 
2 
.0742 
.0740 
+ .0002 
16000 
.0794 
.0790 
+ 
4 
.0808 
.0790 
+ 
18 
.0861 
.0860 
+ 
1 
15000 
.0927 
.0930 
- 
3 
.0945 
.0950 
— 
5 
.1004 
.1010 
- 
6 
.1021 
.1020 
+.0001 
14000 
.1082 
.1090 
— 
8 
.1101 
.1110 
— 
9 
.1177 
.1170 
+ 
7 
.1203 
.1200 
+ 
3 
13000 
.1266 
.1270 
— 
4 
.1289 
.1300 
— 
11 
.1381 
.1380 
+ 
1 
.1409 
.1410 
— 
1 
12000 
.1484 
.1490 
— 
6 
.1512 
.1520 
— 
8 
.1615 
.1610 
+ 
5 
.1641 
.1640 
+ 
1 
11000 
.1744 
.1750 
— 
6 
.1772 
.1780 
— 
8 
.1881 
.1880 
+ 
1 
.1902 
.1900 
+ 
2 
10000 
.2041 
.2050 
- 
9 
.2067 
.2080 
- 
13 
.2179 
.2180 
- 
1 
.2191 
.2190 
+ 
1 
9000 
.2374 
.2390 
_ 
16 
.2399 
.2410 
11 
.2509 
.2510 
_ 
1 
.2512 
.2510 
+ 
2 
8000 
.2746 
.2760 
— 
14 
.2769 
.2780 
— 
11 
.2875 
.2880 
— 
5 
.2870 
.2870 
0 
7000 
.3159 
.3180 
— 
21 
.3181 
.3190 
— 
9 
.3281 
.3290 
— 
9 
.3268 
.3260 
+ 
8 
6000 
.3619 
.3630 
— 
11 
.3639 
.3650 
— 
11 
.3732 
.3740 
— 
8 
.3709 
.3710 
— 
1 
5000 
.4128 
.4130 
- 
2 
.4149 
.4160 
- 
11 
.4233 
.4240 
- 
7 
.4200 
.4200 
0 
4000 
.4696 
.4700 
_ 
4 
.4716 
.4720 
_ 
4 
.4789 
.4800 
_ 
11 
.4747 
.4750 
_ 
3 
3000 
.5330 
.5340 
— 
10 
.5344 
.5340 
+ 
4 
.5402 
.5410 
— 
8 
.5356 
.5350 
+ 
6 
2000 
.6035 
.6040 
— 
5 
.6040 
.6040 
0 
.6077 
.6060 
+ 
17 
.6031 
.6030 
+ 
1 
1000 
.6823 
.6840 
— 
17 
.6806 
.6810 
— 
4 
.6821 
.6820 
+ 
1 
.6783 
.6780 
+ 
3 
Surface 
.7599 
.7599 
0 
.7551 
.7551 
0 
.7640 
.7640 
0 
.7610 
.7610 
0 
The differences between B c and B 0 are probably due to an 
assignment of the temperature to a slightly erroneous height,* 
owing to the movement of the balloon ahead of the record of 
the barograph and thermograph, which requires a correction 
for lag. The pressure recorded by the aneroid is for the mixture 
of dry air and aqueous vapor, so that by (75) for the same height, 
where T = T 0 and p = p 0 , 
(185) P 0 = P (l - 0.378 
B 0 = B (l - 0.378 
where P or B is the dry air pressure, and Po or B 0 the 
pressure in the mixture, e being the vapor pressure in the 
* The heights have been read from the aneroid record and are not corrected 
for the supposed lag; but the error is less for T than for P because T changes 
more slowly than P.