The Arden Buck equations are a group of empirical correlations that relate the saturation vapor pressure to temperature for moist air. The curve fits have been optimized for more accuracy than the Goff–Gratch equation in the range −80 to 50 °C (−112 to 122 °F).[1]
A set of several equations were developed, each of which is applicable in a different situation.
Buck (1981) also lists enhancement factors for a temperature range of −80 to 50 °C (−112 to 122 °F) at pressures of 1,000 mb, 500 mb, and 250 mb. These coefficients are listed in the table below.
Buck, A. L. (1981), "New equations for computing vapor pressure and enhancement factor", J. Appl. Meteorol., 20: 1527–1532
Buck (1996), Buck Research CR-1A User's Manual, Appendix 1.(PDF)
External links
Web Page listing various vapor pressure equations (for below 0 °C)
January 28, 2023
arden, buck, equation, group, empirical, correlations, that, relate, saturation, vapor, pressure, temperature, moist, curve, fits, have, been, optimized, more, accuracy, than, goff, gratch, equation, range, several, equations, were, developed, each, which, app. The Arden Buck equations are a group of empirical correlations that relate the saturation vapor pressure to temperature for moist air The curve fits have been optimized for more accuracy than the Goff Gratch equation in the range 80 to 50 C 112 to 122 F 1 A set of several equations were developed each of which is applicable in a different situation Contents 1 Formula 2 See also 3 Notes 4 References 5 External linksFormula EditThe equations suggested by Buck 1996 which are modifications of the equations in Buck 1981 are P s T 6 1121 exp 18 678 T 234 5 T 257 14 T displaystyle P mathrm s left T right 6 1121 exp left left 18 678 frac T 234 5 right left frac T 257 14 T right right over liquid water T gt 0 C P s T 6 1115 exp 23 036 T 333 7 T 279 82 T displaystyle P mathrm s left T right 6 1115 exp left left 23 036 frac T 333 7 right left frac T 279 82 T right right over ice T lt 0 Cwhere Ps T is the saturation vapor pressure in hPa exp x is the exponential function T is the air temperature in degrees CelsiusBuck 1981 also lists enhancement factors for a temperature range of 80 to 50 C 112 to 122 F at pressures of 1 000 mb 500 mb and 250 mb These coefficients are listed in the table below Enhancement factor EF C 1 000 mb 500 mb 250 mb 80 1 00410 1 00200 70 1 00360 1 00180 60 1 00640 1 00320 1 00160 50 1 00580 1 00290 1 00140 40 1 00520 1 00260 1 00130 30 1 00470 1 00240 1 00120 20 1 00440 1 00220 1 00120 10 1 00410 1 00220 1 00120 0 1 00395 1 00219 1 00132 10 1 00388 1 00229 20 1 00400 1 00251 30 1 00426 1 00284 40 1 00467 1 00323 50 1 00519 See also EditVapour pressure of water Antoine equation Tetens equation Lee Kesler method Goff Gratch equationNotes Edit Buck 1981References EditBuck A L 1981 New equations for computing vapor pressure and enhancement factor J Appl Meteorol 20 1527 1532 Buck 1996 Buck Research CR 1A User s Manual Appendix 1 PDF External links EditWeb Page listing various vapor pressure equations for below 0 C Retrieved from https en wikipedia org w index php title Arden Buck equation amp oldid 1123341707, wikipedia, wiki, book, books, library,