Moisture origins affecting sub-daily precipitation δ18O and d-excess values mapped in Western Europe

Türk, Guilhem; Gey, Christoph J.; Schöne, Bernd R.; Pfister, Laurent

doi:10.5194/hess-30-2859-2026

Articles | Volume 30, issue 9

https://doi.org/10.5194/hess-30-2859-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-30-2859-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 30, issue 9

Research article

|

12 May 2026

Research article |

| 12 May 2026

Moisture origins affecting sub-daily precipitation δ¹⁸O and d-excess values mapped in Western Europe

Guilhem Türk, Christoph J. Gey, Bernd R. Schöne, and Laurent Pfister

Model code and software

guilhem-turk/Moisture-origins-affecting-sub-daily-precipitation-18O-and-d-excess-values-mapped-in-Western-Europe: Original release for the HESS journal publication (v.0) Guilhem Türk https://doi.org/10.5281/zenodo.20111416

Short summary

Stable isotopes of oxygen (O¹⁶/O¹⁸) are powerful tools in eco-hydrology. Yet, a limitation is that the influence of atmospheric circulation on precipitation isotope signals is not well known. Here, we mapped isotope signals from different moisture origins with an air mass trajectory model, revealing contrasted contributions to precipitation isotope signals in Western Europe. These insights are key for interpreting isotope signals to assess changes in the water cycle.