Dataset Guide

Dataset: Calculated Diffusivities for Water Isotopologues in Carbon Dioxide, Nitrogen, and the Atmosphere of Mars, and for Methane Isotopologues in Nitrogen Representing the Atmosphere of Titan
Provided by National Institute of Standards and Technology
Updated 25 Apr 2021

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Dataset summary

The dataset on this page is a cache of the dataset https://catalog.data.gov/dataset/calculated-diffusivities-for-water-isotopologues-in-carbon-dioxide-nitrogen-and-the-atmosp. It is a snapshot of the dataset as it appeared on 11 Jun 2021 16:08 GMT. The current dataset could have changed in the meantime. Attribution: Contains data retrieved from Data.gov.

Values are computed for the dilute-gas diffusivity of water isotopologues in N2, CO2, and their mixture at a composition representing the atmosphere of Mars, for standard conditions of 101.325 kPa and water mole fraction approaching zero. Values are similarly computed for the diffusivity of methane isotopologues in N2, representing the atmosphere of Titan. Calculations employ state-of-the-art intermolecular potentials and classical trajectory calculations as described in the paper by R. Hellmann and A.H. Harvey, "First-Principles Diffusivity Ratios for Atmospheric Isotope Fractionation on Mars and Titan", published in Journal of Geophysical Research: Planets, 126, e2021JE006857 (2021), https://doi.org/10.1029/2021JE006857. Separate files are given for the diffusivities of H2O, HDO (where D is deuterium), and the 17-O and 18-O substitutions of H2O, and for the diffusivities in N2 of CH4, CH3D, and the 13-C substitution of CH4.

Dataset:Calculated Diffusivities for Water Isotopologues in Carbon Dioxide, Nitrogen, and the Atmosphere of Mars, and for Methane Isotopologues in Nitrogen Representing the Atmosphere of Titan
Provider:National Institute of Standards and Technology
Created:11/03/2021
Updated:25/04/2021
Licence:License information is derived automatically. Refer to source for license information before using this data.
other-license-specified
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Country:United States of America

Dataset resources

"Calculated Diffusivities for Water Isotopologues in Carbon Dioxide, Nitrogen, and the Atmosphere of Mars, and for Methane Isotopologues in Nitrogen Representing the Atmosphere of Titan" contains the following resources:

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