sea_level_pressure: Sea level pressure

In ASRCsoft/atmoschem.datasets: ASRC Atmospheric Chemistry Data Processing

Sea level pressure

Description

Estimate sea level pressure from local pressure, temperature, and height using the barometric formula.

Usage

sea_level_pressure(press, temp, height)

Arguments

press	Pressure in millibars.
temp	Temperature in Celsius.
height	Height above sea level in meters.

Details

We estimate the sea level pressure using the barometric formula,

P = P0 (T0/T)^(Mg / (Rstar L))

where P is pressure, T is temperature (in Kelvin), H is height, and L is the temperature lapse rate. Variables with subscript 0 are the same at sea level. Substituting T0 = T - LH, we can solve for P0 in terms of pressure, temperature, and height:

P0 = P (T/(T - LH))^(Mg/(Rstar L))

The values of physical constants are taken from \insertCitecoesa_us_1976;textualatmoschem.process:

L (lapse rate)

-.0065 K/m

M (molar mass of air)

0.0289644 kg/mol

g (gravitational acceleration)

9.80665 m/s^2

Rstar (universal gas constant)

8.31432 J/(mol K)

Value

Estimated sea level pressure.

References

\insertAllCited

Examples

# estimate sea level pressure at the Whiteface Mountain summit
sea_level_pressure(800, 30, 1483.5)

ASRCsoft/atmoschem.datasets documentation built on Feb. 15, 2023, 9:26 a.m.