{
  "abstract": "The Surface Water and Ocean Topography (SWOT) satellite mission introduces unprecedented 2-D radar interferometry to inland hydrology, aiming to evaluate water bodies down to 0.0625 km ² . Standard operational products, such as LakeSP, are designed for global applicability but may exhibit suboptimal design choices for particular hydrological regimes. To address this, a customized processing workflow utilizing low-level SWOT L2 HR PIXC vD data was evaluated using 37 small Danish lakes (0.25 to 40 km ² ) against daily in-situ gauge data from July 2023 to May 2026. The workflow achieves a median root-mean-square error (RMSE) of 5.57 cm and a Pearson correlation coefficient (PCC) of 0.91, similar to LakeSP. Crucially, this approach retains a median of 125 valid timestamps per lake compared to 60 timestamps preserved by the filtered LakeSP product, effectively doubling the temporal resolution and enabling the capture of higher-frequency hydrological variations. Additionally, we find indications that SWOT's PIXC data contains time-varying residual roll-errors over Danish lakes that affect ca 18 % of all passes with more than 10 observed lakes covering Denmark.",
  "abstract_shown": true,
  "affiliations": [
    "DTU Space (Kongens Lyngby, Denmark)"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Simon Jakob Köhn",
      "orcid": "0009-0006-2038-5894"
    },
    {
      "affs": [
        0
      ],
      "name": "Karina Nielsen",
      "orcid": "0000-0002-0035-1869"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7vygrjf5mcr7v.bib",
  "cited_by": 1,
  "doi": "10.5194/hess-30-6443-2026",
  "fulltext_url": null,
  "id": "7vygrjf5mcr7v",
  "issns": [
    "1607-7938"
  ],
  "landing_url": "https://hess.copernicus.org/articles/30/6443/2026/",
  "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",
      "2312|Hydrology and Watershed Management Studies"
    ]
  ],
  "openalex": "W7128592041",
  "pdf_url": "https://hess.copernicus.org/articles/30/6443/2026/hess-30-6443-2026.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": "Copernicus GmbH",
  "ris": "https://research.draconitic.com/paper/7vygrjf5mcr7v.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:36Z",
      "native_id": "10.5194/hess-30-6443-2026",
      "source": "crossref",
      "url": "https://hess.copernicus.org/articles/30/6443/2026/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:2312|Hydrology and Watershed Management Studies",
      "subfield": "hydrology-soils"
    }
  ],
  "title": "Evaluation of SWOT HR PIXC version D water level time series of small lakes",
  "title_text": "Evaluation of SWOT HR PIXC version D water level time series of small lakes",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:20:36Z",
  "url": "https://research.draconitic.com/paper/7vygrjf5mcr7v",
  "venue": "Hydrology and Earth System Sciences",
  "versions": [
    {
      "doi": "10.5194/egusphere-2025-6366",
      "pid": null,
      "relation": "preprint",
      "title": null,
      "venue": null
    }
  ]
}