A non-stationary trans-Gaussian model for daily rainfall over complex topography

Benoit, Lionel; Lucas, Matthew P.; Allard, Denis; Kodama, Keri M.; Giambelluca, Thomas W.

doi:10.5194/hess-30-4799-2026

Articles | Volume 30, issue 14

https://doi.org/10.5194/hess-30-4799-2026

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

https://doi.org/10.5194/hess-30-4799-2026

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

Articles | Volume 30, issue 14

Research article

|

29 Jul 2026

Research article |

| 29 Jul 2026

A non-stationary trans-Gaussian model for daily rainfall over complex topography

Lionel Benoit, Matthew P. Lucas, Denis Allard, Keri M. Kodama, and Thomas W. Giambelluca

Supplement

https://doi.org/10.5194/hess-30-4799-2026-supplement

Model code and software

StochasticRainfallModel_Orography L. Benoit https://doi.org/10.5281/zenodo.21341381

Short summary

In mountainous regions the interactions between topography and prevailing winds generate orographic effects, which modulate rainfall occurrence and intensity depending on slope exposure, finally creating strong rainfall gradients. This study introduces a geostatistical model dedicated to rainfall mapping in mountainous areas, which explicitly account for possible orographic effects.