H2O Saturation Vapor Pressure - mbar

Temperature K   C   F
Threshold
  Over Ice Over Water Difference Percent %  
MurphyKoop
 
GoffGratch
-100C to 0C over ice, -50C to 102C over water
CIMO
 
HylandWexler
The standard states the vapor pressure over both
ice and liquid water at the triple point.
T = 273.16 K (0.01C)
P(T)= 611.657 0.01 Pa
= 6.11657 0.0001 mbar
(Guildner et al. 1976)
The other calibration point is boiling at sea level.
T = 373.15   K (100C) Before 1990
T = 373.124 K (99.974C)After 1990
P(T) = 1013.25 mbar
MartiMauersberger
 
MagnusTetens
 
Buck_original
 
Buck_manual
 
WMO_Goff
 
WMO2000
 
Wexler
 
Sonntag
 
Bolton
 
Fukuta
-35C to -20C over water
IAPWS
273.16 K to 647.095 K (Triple point to Critical point)
Preining
 
Seinfeld_Pandis
Intersects both calibration points (Triple and Boiling points)
GISS_AR4
6.108 mbar at triple point (273.16 K)
Antoine
Based on Clausius-Clapeyron relation
August
Low quality
Magnus - Custom
exp( * TC / ( + TC) )

This javascript app is functionally identical to Saturation_vapor_pressure.html
Plus the addition of 2 more columns to simplify comparing results. and the custom Magnus entries (over water only)
Use Ctrl, Shift, and Alt keys with the mouse wheel, arrow buttons, and up/down cursor keys to change temperature fields.
red indicates "out of spec" - the value is outside the calibration range for the formulation
Click on an Over Water or Over Ice value to see how the other values in that column compare. A pink background indicates that the percentage exceeds the threshold.


Author: Robert Clemenzi
URL: http:// mc-computing.com / Science_Facts / Water_Vapor / Saturation_vapor_pressure_percent_difference.html