Modelling water isotopologues (1H2H16O, 1H217O) in the coupled numerical climate model iLOVECLIM (version 1.1.5)

Extier, Thomas; Caley, Thibaut; Roche, Didier M.

doi:https://doi.org/10.5194/gmd-17-2117-2024

Articles | Volume 17, issue 5

https://doi.org/10.5194/gmd-17-2117-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The iLOVECLIM earth system model

https://doi.org/10.5194/gmd-17-2117-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 5

Model description paper

|

13 Mar 2024

Model description paper |

| 13 Mar 2024

Modelling water isotopologues (¹H²H¹⁶O, ¹H₂¹⁷O) in the coupled numerical climate model iLOVECLIM (version 1.1.5)

Thomas Extier, Thibaut Caley, and Didier M. Roche

Data sets

Stable Water Isotope Intercomparison Group, Phase 2 (SWING2) NASA https://data.giss.nasa.gov/swing2/

Model code and software

iLOVECLIM source code v1559 Thomas Extier https://doi.org/10.5281/zenodo.10046488

LUDUS Framework IPSL http://forge.ipsl.jussieu.fr/ludus

Short summary

Stable water isotopes are used to infer changes in the hydrological cycle for different time periods in climatic archive and climate models. We present the implementation of the δ²H and δ¹⁷O water isotopes in the coupled climate model iLOVECLIM and calculate the d- and ¹⁷O-excess. Results of a simulation under preindustrial conditions show that the model correctly reproduces the water isotope distribution in the atmosphere and ocean in comparison to data and other global circulation models.