Nonstd Temperature
Pressure vs Height – ISA
Comparison of pressure decrease with height for
standard atmosphere (ISA) and warmer/colder air columns
(simplified troposphere model).
Height
Temperature offset
ISA (standard)
Warm column (T₀ + ΔT)
Cold column (T₀ − ΔT)
Values at selected height
Height h
-
p (ISA)
-
p (warm)
-
p (cold)
-
T₀ (warm)
-
T₀ (cold)
-
Warmer air ⇒ pressure decreases more slowly with height (larger scale height).
Colder air ⇒ pressure decreases faster.
Colder air ⇒ pressure decreases faster.