Skip to content
DraconiticResearch
Search Sources API
190,332 studies31 sourcesUpdated 6 min ago
Peer-reviewedCC BY 4.0Geoscientific Model Development

Meso-NH-ISO v1.0: a water stable isotopologue scheme in the non-hydrostatic mesoscale atmospheric model Meso-NH – application to a 2D West African squall line

  • Christelle Barthe1,2,3
  • Françoise Vimeux
  • Camille Risi
  • Sören François
  1. 1Laboratoire d'Aérologie (Toulouse, France)
  2. 2Université de Toulouse (Toulouse, France)
  3. 3Centre National de la Recherche Scientifique (Paris, France)
Open at sourcePDFDOICite

Abstract

Better understanding how convective processes impact the isotopic composition of atmospheric water has implications for understanding phenomena such as squall lines or tropical cyclones, and for reconstructions of past rainfall extreme events. With this motivation, we implemented water stable isotopologues (HD ¹⁶ O and H218O) in the non-hydrostatic mesoscale atmospheric model Meso-NH and its one-moment bulk mixed-phase microphysics scheme. The water stable isotopologues are subject to the same dynamical and physical processes as the light water, but undergo isotopic fractionation during water phase changes. Both equilibrium and kinetic fractionation processes that occur during water phase changes involving water vapor are taken into account. The implementation is validated on a test case of a 2D simulation of a tropical squall line observed in June 1981 during the COPT 81 field campaign in the Sahel region. The isotopic version of Meso-NH (Meso-NH-ISO) captures the expected evolution of the isotopic composition of both precipitation and water vapor along the squall line. This work opens the door to future isotopic studies using realistic cases of mesoscale convective systems (squall lines, tropical cyclones).

Versions

Related

  1. Impacts of mesoscale atmospheric subsidence on cloud glaciation and decoupling in Arctic marine cold air outbreaks
    Fiona Paulus, Joshua J. Müller, Benjamin Kirbus +5
    Atmospheric Chemistry and PhysicsPeer-reviewedCC BY 4.0Full textAtmospheric science & meteorologyCrossref
  2. The concept of quasi-correlated absorption spectra and its application in atmospheric remote sensing
    Frédéric André, Vladimir Solovjov, Brent Webb +2
    Journal of Quantitative Spectroscopy and Radiative TransferPeer-reviewedCC BY 4.0Full textOceanography & cryosphereHAL
  3. The contribution of mesoscale dynamics to the tropical anvil cloud growth rate
    Rémy Roca, Thomas Fiolleau, Léna Arthur +6
    EGUspherePreprintCC BY 4.0General earth scienceEGUsphere
  4. Suêtes: An end-to-end differentiable non-hydrostatic limited-area dynamical core
    Tim Whittaker, Seth Taylor, Elsa Cardoso-Bihlo +2
    arXivPreprintCC BY-NC-SA 4.0Full textAtmospheric science & meteorologyDynamical systemsarXiv
  5. Phase-resolved coastal wave modelling using a non-hydrostatic multilayer formulation
    Øystein Lande, Stéphane Popinet, Odin Gramstad +2
    Coastal EngineeringPeer-reviewedCC BY 4.0Full textEnvironmental science & pollutionFluid dynamicsHAL

Cite

BibTeXRIS
BibTeX
@article{barthe2026mesonhiso,
  title = {{Meso-NH-ISO v1.0: a water stable isotopologue scheme in the non-hydrostatic mesoscale atmospheric model Meso-NH – application to a 2D West African squall line}},
  author = {Christelle Barthe and Françoise Vimeux and Camille Risi and Sören François},
  journal = {Geoscientific Model Development},
  year = {2026},
  month = oct,
  doi = {10.5194/gmd-19-9935-2026},
  url = {https://gmd.copernicus.org/articles/19/9935/2026/},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Meso-NH-ISO v1.0: a water stable isotopologue scheme in the non-hydrostatic mesoscale atmospheric model Meso-NH – application to a 2D West African squall line
AU  - Christelle Barthe
AU  - Françoise Vimeux
AU  - Camille Risi
AU  - Sören François
PY  - 2026
DA  - 2026/10/16
JO  - Geoscientific Model Development
DO  - 10.5194/gmd-19-9935-2026
UR  - https://gmd.copernicus.org/articles/19/9935/2026/
AB  - Better understanding how convective processes impact the isotopic composition of atmospheric water has implications for understanding phenomena such as squall lines or tropical cyclones, and for reconstructions of past rainfall extreme events. With this motivation, we implemented water stable isotopologues (HD ¹⁶ O and H218O) in the non-hydrostatic mesoscale atmospheric model Meso-NH and its one-moment bulk mixed-phase microphysics scheme. The water stable isotopologues are subject to the same dynamical and physical processes as the light water, but undergo isotopic fractionation during water phase changes. Both equilibrium and kinetic fractionation processes that occur during water phase changes involving water vapor are taken into account. The implementation is validated on a test case of a 2D simulation of a tropical squall line observed in June 1981 during the COPT 81 field campaign in the Sahel region. The isotopic version of Meso-NH (Meso-NH-ISO) captures the expected evolution of the isotopic composition of both precipitation and water vapor along the squall line. This work opens the door to future isotopic studies using realistic cases of mesoscale convective systems (squall lines, tropical cyclones).
SN  - 1991-9603
ER  -