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.

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

The one suggested for common use in 1996Fact|date=August 2007 is:

$p\_w\; =\; 6.1121\; expleft(\; frac\{(18.678\; -\; T\; /\; 234.5)\; T\}\{257.14\; +\; T\}\; ight)$

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

[http://cires.colorado.edu/~voemel/vp.html Web Page listing various vapor pressure equations]

[http://ams.allenpress.com/perlserv/?request=get-pdf&doi=10.1175%2F1520-0450%281981%29020%3C1527%3ANEFCVP%3E2.0.CO%3B2 The pdf of the article originally published by Buck]