The Relationship Between the Altitude of the Standard Atmosphere and Air Temperature and Pressure
/ /The Relationship Between the Altitude of the Standard Atmosphere and Air Temperature and Pressure
The standard atmosphere referred to here refers to the "1964, ICAO Standard atmosphere" adopted by the International Civil Aviation Organization. Below an altitude of 32 km, it is the same as "1976, U.S. standard atmosphere". Changes in air temperature near the surface (below 32 km) are:
Ground: The air temperature is 15.0℃, the air pressure P=1013.25mb= 0.101325MPa
Temperature change rate from ground to elevation 11 km: -6.5 ℃/ km
On the 11km interface:
The air temperature is -56.5 ℃ and the air pressure P=226.32mb
Temperature change rate at elevations of 11-20 km: 0.0℃/ km
Temperature change rate at altitude 20-32 km: +1.0/ km
The following table lists the temperature and pressure values of the standard atmosphere at different altitudes. In the table, "gpm" is the altitude meter, and its negative sign represents the altitude
|
Gpm |
Temperature℃ |
Atmospheric pressure(mb) |
Gpm |
Temperature℃ |
Atmospheric pressure(mb) |
Gpm |
Temperature℃ |
Atmospheric pressure(mb) |
|
-400 |
17.6 |
1062.2 |
4800 |
-16.2 |
554.8 |
10000 |
-50.0 |
264.4 |
|
-200 |
16.3 |
1037.5 |
5000 |
-17.5 |
540.2 |
10200 |
-51.3 |
256.4 |
|
0 |
15.0 |
1013.3 |
5200 |
-18.8 |
525.9 |
10400 |
-52.6 |
248.6 |
|
200 |
13.7 |
989.5 |
5400 |
-20.1 |
511.9 |
10600 |
-53.9 |
241.0 |
|
400 |
12.4 |
966.1 |
5600 |
-21.4 |
498.3 |
10800 |
-55.2 |
233.6 |
|
600 |
11.1 |
943.2 |
5800 |
-22.7 |
484.9 |
11000 |
-56.5 |
226.3 |
|
800 |
9.8 |
920.8 |
6000 |
-24.0 |
471.8 |
11500 |
-56.5 |
209.2 |
|
1000 |
8.5 |
898.7 |
6200 |
-25.3 |
459.0 |
12000 |
-56.5 |
193.3 |
|
1200 |
7.2 |
877.2 |
6400 |
-26.6 |
446.5 |
12500 |
-56.5 |
178.7 |
|
1400 |
5.9 |
856.0 |
6600 |
-27.9 |
434.3 |
13000 |
-56.5 |
165.1 |
|
1600 |
4.6 |
835.2 |
6800 |
-29.2 |
422.3 |
13500 |
-56.5 |
152.6 |
|
1800 |
3.3 |
814.9 |
7000 |
-30.5 |
410.6 |
14000 |
-56.5 |
141.0 |
|
2000 |
2.0 |
795.0 |
7200 |
-31.8 |
399.2 |
14500 |
-56.5 |
130.3 |
|
2200 |
0.7 |
775.4 |
7400 |
-33.1 |
388.0 |
15000 |
-56.5 |
120.5 |
|
2400 |
-0.6 |
756.3 |
7600 |
-34.4 |
377.1 |
15500 |
-56.5 |
111.3 |
|
2600 |
-1.9 |
737.5 |
7800 |
-35.7 |
366.4 |
16000 |
-56.5 |
102.9 |
|
2800 |
-3.2 |
719.1 |
8000 |
-37.0 |
356.0 |
17000 |
-56.5 |
87.9 |
|
3000 |
-4.5 |
701.1 |
8200 |
-38.3 |
345.8 |
18000 |
-56.5 |
75.0 |
|
3200 |
-5.8 |
683.4 |
8400 |
-39.6 |
335.9 |
19000 |
-56.5 |
64.1 |
|
3400 |
-7.1 |
666.2 |
8600 |
-40.9 |
326.2 |
20000 |
-56.5 |
54.7 |
|
3600 |
-8.4 |
649.2 |
8800 |
-42.2 |
316.7 |
22000 |
-54.5 |
40.0 |
|
3800 |
-9.7 |
632.6 |
9000 |
-43.5 |
307.4 |
24000 |
-52.5 |
29.3 |
|
4000 |
-11.0 |
616.4 |
9200 |
-44.8 |
298.4 |
26000 |
-50.5 |
21.5 |
|
4200 |
-12.3 |
600.5 |
9400 |
-46.1 |
289.6 |
28000 |
-48.5 |
15.9 |
|
4400 |
-13.6 |
584.9 |
9600 |
-47.4 |
281.0 |
30000 |
-46.5 |
11.7 |
|
4600 |
-14.9 |
569.7 |
9800 |
-48.7 |
272.6 |
32000 |
-44.5 |
8.7 |
Unit conversion relation
1mbar=100Pa=0.1KPa=0.0001 Mpa
1ft=0.3048m=304.8mm
55000ft*0.3048=16764m
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