{
  "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).",
  "abstract_shown": true,
  "affiliations": [
    "Laboratoire d'Aérologie (Toulouse, France)",
    "Université de Toulouse (Toulouse, France)",
    "Centre National de la Recherche Scientifique (Paris, France)"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Christelle Barthe",
      "orcid": "0000-0003-0790-7193"
    },
    {
      "name": "Françoise Vimeux"
    },
    {
      "name": "Camille Risi",
      "orcid": "0000-0002-8267-453X"
    },
    {
      "name": "Sören François"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b3f6aen15kt6f.bib",
  "cited_by": 0,
  "doi": "10.5194/gmd-19-9935-2026",
  "fulltext_url": null,
  "id": "b3f6aen15kt6f",
  "issns": [
    "1991-9603"
  ],
  "landing_url": "https://gmd.copernicus.org/articles/19/9935/2026/",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1902|Meteorological Phenomena and Simulations"
    ]
  ],
  "openalex": "W7152735815",
  "pdf_url": "https://gmd.copernicus.org/articles/19/9935/2026/gmd-19-9935-2026.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": "Copernicus GmbH",
  "ris": "https://research.draconitic.com/paper/b3f6aen15kt6f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:49Z",
      "native_id": "10.5194/gmd-19-9935-2026",
      "source": "crossref",
      "url": "https://gmd.copernicus.org/articles/19/9935/2026/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:1902|Meteorological Phenomena and Simulations",
      "subfield": "atmospheric"
    }
  ],
  "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",
  "title_text": "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",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:20:49Z",
  "url": "https://research.draconitic.com/paper/b3f6aen15kt6f",
  "venue": "Geoscientific Model Development",
  "versions": [
    {
      "doi": "10.5194/egusphere-2026-548",
      "pid": null,
      "relation": "preprint",
      "title": null,
      "venue": null
    }
  ]
}