Barometric Pressure Correction

This program computes the barometric pressure (in inches of mercury) for various altitudes from 0 to 15,000 feet based on U.S. Standard Atmosphere. (The U.S. Standard Atmosphere is the barometric pressure which will support a column of mercury 29.921 inches high at sea level at a temperature of 59°F.)

Program Notes:
While the barometric pressure of air varies considerably with altitude, temperature, and geographic location, this program assumes a linear decrease in temperature in the lower atmosphere. It also assumes that the lower atmosphere acts as a perfect gas, not taking into account the effects of geographic location.

Downloads:
basic program (liberty basic) lbbpc.bas

Test Case:
Compute the standard barometric pressure at sea level (0 feet altitude) and the corresponding standard barometric pressure for Denver, Colorado (5283 feet altitude).
 

BAROMETRIC PRESSURE CORRECTION

ALTITUDE = 5283

BAROMETRIC PRESSURE

INCHES OF MERCURY  = 24.6405843
MM OF MERCURY      = 625.876508
POUNDS PER SQ INCH = 12.1032111

TEMPERATURE FAHR.  = 40.1638655

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