(33S) Atmospheric Parameters

[Eddie W. Shore]

Atmospheric Parameters

Given the height (H) in meters, the following can be estimated:

Temperature in Celsius (°C):
T ≈ 15.04 - 0.00649 * H

Pressure in kilopascals (kPa):
P ≈ 101.29 * ((T + 273.15) / 288.08)^5.256
(note, the source had 273.1 but I had 27.3.15 for better accuracy)

Atmospheric Density (km/m^3):
D ≈ P/(0.2869 * (T + 273.15))

Program:
HP 33S: Size: LN = 174, CK = 7625

Code:

A0001  LBL A
A0002  15.04
A0003  0.00649
A0004  INPUT H
A0005  ×
A0006  -
A0007  STO T
A0008  VIEW T
A0009  273.15
A0010  +
A0011  288.08
A0012  ÷
A0013  52.56
A0014  y^x
A0015 101.29
A0016  ×
A0017  STO P
A0018  VIEW P
A0019  0.2869
A0020  273.15
A0021  RCL+ T
A0022  ×
A0023  ÷
A0024  STO D
A0025  VIEW D
A0026  RTN

Example:
H = 50 m

Results:
T ≈ 14.715580 °C (about 58.4879 °F)
P ≈ 100.894225 kPa
D ≈ 1.221648 kg/m^3

Source:
"Engineering Formula Sheet" Project Lead The Way. https://www.madison-lake.k12.oh.us/userf...0Sheet.pdf Last Retrieved April 29, 2022