Arden Buck Equation

The Arden Buck Equation is an equation describing the saturation vapor pressure of water at various temperatures. It is based on more recent experiments than the Goff-Gratch equation.

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A set of several equations were developed, each of which is applicable in a different situation.

The one suggested for common use in 1996^{[citation needed]} is:

where:

p_w is the saturation vapor pressure (hPa)

exp is the exponential function

T is the air temperature in degrees Celsius

References

Buck, A. L., New equations for computing vapor pressure and enhancement factor, J. Appl. Meteorol., 20, 1527-1532, 1981

Web Page listing various vapor pressure equations

The pdf of the article originally published by Buck