pvlib.atmosphere.pres2alt

pvlib.atmosphere.pres2alt(pressure)[source]

Determine altitude from site pressure.

Parameters:

pressure : numeric

Atmospheric pressure (Pascals)

Returns:

altitude : numeric

Altitude in meters above sea level

Notes

The following assumptions are made

Parameter Value
Base pressure 101325 Pa
Temperature at zero altitude 288.15 K
Gravitational acceleration 9.80665 m/s^2
Lapse rate -6.5E-3 K/m
Gas constant for air 287.053 J/(kgK)
Relative Humidity 0%

References

[1] “A Quick Derivation relating altitude to air pressure” from Portland State Aerospace Society, Version 1.03, 12/22/2004.