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High-Accuracy Measurements of the Vapor Pressure of Ice Referenced to the Triple Point



Katarzyna E. Bielska, Daniel K. Havey, Gregory E. Scace, D Lisak, Allan H. Harvey, Joseph T. Hodges


The vapor pressure of hexagonal (Ih) ice was measured over the temperature range 175 K to 253.4 K and referenced to the value at the triple point of water. This experiment combined a highly accurate humidity generation system containing an ice-coated saturator (mK-level temperature control) to provide humidified streams of nitrogen to a cavity-enhanced laser absorption spectrometer. The measured ice vapor pressures had relative standard uncertainties ranging from 0.4% to 0.7% over the entire temperature range. We demonstrate that these measurements validate thermodynamic correlations for ice vapor pressure based on integration of the Clapeyron equation. Moreover, they also indicate that some commonly used vapor pressure are inaccurate and should be avoided.
Geophysical Research Letters


ice, spectroscopy, sublimation pressure, vapor pressure, thermodynamics


Bielska, K. , Havey, D. , Scace, G. , Lisak, D. , Harvey, A. and Hodges, J. (2013), High-Accuracy Measurements of the Vapor Pressure of Ice Referenced to the Triple Point, Geophysical Research Letters, [online],, (Accessed May 23, 2024)


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Created December 5, 2013, Updated October 12, 2021