Uppsala Conflict Data Program (UCDP), Uppsala University

Open · redistributedCreative Commons Attribution 4.0 (CC BY 4.0)Conflict & Security

Source: Uppsala Conflict Data Program (UCDP), licensed under CC BY 4.0; cite the dataset's listed publications

Redistributable. This source is served as canonical Parquet under the license below, with attribution and provenance preserved.

Coverage

Series catalogued

1,709

Temporal coverage

1946-12-31 – 2023-12-31

Licensing & provenance

License: Creative Commons Attribution 4.0 (CC BY 4.0)
License URL: https://creativecommons.org/licenses/by/4.0/
Required attribution: Source: Uppsala Conflict Data Program (UCDP), licensed under CC BY 4.0; cite the dataset's listed publications
Redistribution: Permitted (served here)
Commercial use: Yes
Modification: Permitted
Provider homepage: https://ucdp.uu.se
Provider terms: https://ucdp.uu.se/downloads/

How to cite

Uppsala Conflict Data Program (UCDP), Uppsala University. Retrieved from https://ucdp.uu.se. Compiled and redistributed by the Elkassabgi Data Library.

Processing: Retrieved from the official source, normalized to a long {series_key, obs_date, value} schema (period-start dates), de-duplicated, and stored as zstd Parquet. Compiled and redistributed by the Elkassabgi Data Library.

Access & mirrors

Download: Select & download ucdp series as CSV →
API: Get a free API key, then GET /v1/series/<id>.csv
Canonical landing: https://econdatalibrary.com/ucdp
Update cadence: annual
Automated refresh: live — this database is on the daily update run
Update strategy: bulk snapshot if changed
Storage layout: single parquet: data/clean_full/ucdp/acd.parquet (29 KB). Schema: series_key (string), obs_date (date32), value (float64). Keys: UCDP:ACD:{var}:{conflict_id} and country-year aggregates UCDP:ACD:{n_conflicts|max_intensity|is_war|...}:{gwno}.

Structured metadata

schema.org/Dataset (Google Dataset Search)

{
  "@context": "https://schema.org/",
  "@type": "Dataset",
  "name": "Uppsala Conflict Data Program (UCDP), Uppsala University",
  "description": "Conflict intensity level (1=minor, 2=war); Cumulative conflict intensity (1 once >1,000 battle deaths). UCDP. 1,709 series, 1946–2023. Free download.",
  "url": "https://econdatalibrary.com/ucdp",
  "identifier": "ucdp",
  "isAccessibleForFree": true,
  "publisher": {
    "@type": "Organization",
    "name": "Econ Data Library",
    "url": "https://econdatalibrary.com"
  },
  "includedInDataCatalog": {
    "@type": "DataCatalog",
    "@id": "https://econdatalibrary.com/#catalog",
    "name": "Econ Data Library",
    "url": "https://econdatalibrary.com/catalog"
  },
  "creator": {
    "@type": "Organization",
    "name": "Uppsala Conflict Data Program, Uppsala University",
    "alternateName": "UCDP",
    "url": "https://ucdp.uu.se"
  },
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "keywords": [
    "Conflict & Security",
    "ucdp"
  ],
  "variableMeasured": [
    "Conflict intensity level (1=minor, 2=war)",
    "Cumulative conflict intensity (1 once >1,000 battle deaths)",
    "Type of armed conflict (1=extrasystemic, 2=interstate, 3=intrastate, 4=internationalized)",
    "Number of active state-based armed conflicts",
    "Maximum conflict intensity level (1=minor, 2=war)",
    "War present (>=1,000 battle-related deaths in a conflict)",
    "Intrastate conflict present",
    "Interstate conflict present",
    "Extrastate conflict present",
    "Internationalized intrastate conflict present"
  ],
  "temporalCoverage": "1946-12-31/2023-12-31",
  "creditText": "Source: Uppsala Conflict Data Program (UCDP), licensed under CC BY 4.0; cite the dataset's listed publications",
  "citation": "Uppsala Conflict Data Program (UCDP), Uppsala University. Retrieved from https://ucdp.uu.se. Compiled and redistributed by the Elkassabgi Data Library.",
  "sameAs": [
    "https://huggingface.co/datasets/econdatalibrary-ucdp",
    "https://zenodo.org/communities/econdatalibrary"
  ],
  "distribution": [
    {
      "@type": "DataDownload",
      "name": "ucdp — CSV",
      "encodingFormat": "text/csv",
      "contentUrl": "https://econdatalibrary.com/download.html?source=ucdp",
      "license": "https://creativecommons.org/licenses/by/4.0/"
    }
  ]
}

Croissant (ML-ready, schema.org JSON-LD)

{
  "@context": {
    "@language": "en",
    "@vocab": "https://schema.org/",
    "cr": "http://mlcommons.org/croissant/",
    "data": {
      "@id": "cr:data",
      "@type": "@json"
    },
    "dataType": {
      "@id": "cr:dataType",
      "@type": "@vocab"
    },
    "sc": "https://schema.org/",
    "conformsTo": "dct:conformsTo",
    "dct": "http://purl.org/dc/terms/"
  },
  "@type": "sc:Dataset",
  "conformsTo": "http://mlcommons.org/croissant/1.0",
  "name": "ucdp",
  "description": "Conflict intensity level (1=minor, 2=war); Cumulative conflict intensity (1 once >1,000 battle deaths). UCDP. 1,709 series, 1946–2023. Free download.",
  "url": "https://econdatalibrary.com/ucdp",
  "creator": {
    "@type": "sc:Organization",
    "name": "Uppsala Conflict Data Program, Uppsala University",
    "alternateName": "UCDP",
    "url": "https://ucdp.uu.se"
  },
  "publisher": {
    "@type": "sc:Organization",
    "name": "Econ Data Library",
    "url": "https://econdatalibrary.com"
  },
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "keywords": [
    "Conflict & Security"
  ],
  "temporalCoverage": "1946-12-31/2023-12-31",
  "citation": "Uppsala Conflict Data Program (UCDP), Uppsala University. Retrieved from https://ucdp.uu.se. Compiled and redistributed by the Elkassabgi Data Library.",
  "distribution": [
    {
      "@type": "cr:FileObject",
      "@id": "ucdp-csv",
      "name": "ucdp-csv",
      "description": "Per-series CSV, downloadable with a free API key.",
      "contentUrl": "https://econdatalibrary.com/download.html?source=ucdp",
      "encodingFormat": "text/csv"
    }
  ]
}

Part of the Econ Data Library catalog · metadata generated 2026-08-02 from the central registry · browse all datasets