Articles | Volume 24, issue 9
Hydrol. Earth Syst. Sci., 24, 4491–4501, 2020
https://doi.org/10.5194/hess-24-4491-2020

Special issue: Water, isotope and solute fluxes in the soil–plant–atmosphere...

Hydrol. Earth Syst. Sci., 24, 4491–4501, 2020
https://doi.org/10.5194/hess-24-4491-2020

Research article 16 Sep 2020

Research article | 16 Sep 2020

Novel Keeling-plot-based methods to estimate the isotopic composition of ambient water vapor

Yusen Yuan et al.

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Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2020-519,https://doi.org/10.5194/hess-2020-519, 2020
Revised manuscript not accepted

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Cited articles

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Craig, H. and Gordon, L. I.: Deuterium and oxygen 18 variations in the ocean and marine atmosphere, in: Stable Isotopes in Oceanographic Studies and Paleotemperatures, edited by: Tongiorgi, E., Consiglio nazionale delle richerche laboratorio di geologia nuclear, p. 9, 1965. 
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Short summary
The isotopic composition of ambient water vapor is an important source of atmospheric water vapor and has not been able to be estimated to date using the Keeling plot approach. Here we proposed two new methods to estimate the isotopic composition of ambient water vapor: one using the intersection point method and another relying on the intermediate value theorem.