{
  "abstract": "Kilometre-scale Weather Research and Forecasting (WRF) simulations over terrain with steep slopes often require strong smoothing to prevent numerical instability, but conventional domain-wide filters alter terrain at every grid point, regardless of whether local slopes require reduction. Slope-Constrained Orography (SCO) is an offline terrain preprocessing method that prescribes a target slope angle θ and adjusts only those grid points whose eight-neighbour elevation differences exceed the implied bound, leaving the remaining terrain unchanged. By prescribing the slope constraint directly, SCO provides a geometrically interpretable primary user-facing parameter for terrain construction and stability testing. In a 1 km WRF case over the highly complex terrain of the southeastern Tibetan Plateau, the least-modified stable SCO member among those tested modifies 14 % of points with a mean elevation change of 8.2 m, compared with 100 % modification and 108.1 m for the corresponding WRF Preprocessing System (WPS) member. The successful SCO configuration produces lower near-surface wind and temperature errors in this case.",
  "abstract_shown": true,
  "affiliations": [
    "China Meteorological Administration (Beijing, China)",
    "Chinese Academy of Meteorological Sciences (Beijing, China)",
    "Shenzhen University (Shenzhen, China)"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Yulong Ma"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xingwen Jiang",
      "orcid": "0000-0003-1727-9266"
    },
    {
      "affs": [
        2
      ],
      "name": "Lin Mu"
    },
    {
      "name": "Zhiwei Heng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4b62qgvd78pv2.bib",
  "cited_by": 0,
  "doi": "10.5194/gmd-19-10433-2026",
  "fulltext_url": null,
  "id": "4b62qgvd78pv2",
  "issns": [
    "1991-9603"
  ],
  "landing_url": "https://gmd.copernicus.org/articles/19/10433/2026/",
  "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": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": "Copernicus GmbH",
  "ris": "https://research.draconitic.com/paper/4b62qgvd78pv2.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T12:21:57Z",
      "native_id": "10.5194/gmd-19-10433-2026",
      "source": "crossref",
      "url": "https://gmd.copernicus.org/articles/19/10433/2026/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "issn:1991-9603",
      "subfield": "general"
    }
  ],
  "title": "Slope-Constrained Orography (SCO v1.0) for explicit discrete-slope control in terrain preprocessing: a case study with WRF-ARW (v4.6.1)",
  "title_text": "Slope-Constrained Orography (SCO v1.0) for explicit discrete-slope control in terrain preprocessing: a case study with WRF-ARW (v4.6.1)",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T00:21:33Z",
  "url": "https://research.draconitic.com/paper/4b62qgvd78pv2",
  "venue": "Geoscientific Model Development",
  "versions": [
    {
      "doi": "10.5194/egusphere-2026-2076",
      "pid": null,
      "relation": "preprint",
      "title": null,
      "venue": null
    }
  ]
}