GET

Observation Instance

Get a list of Observation objects.

### Available end points:

- `/observations/` - Will list all Results in the database
- `/observations.json` - Will return all Results in json format. This can
also be achieved by using the accept header. `application/json`
- `/observations/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `status`
- `result_field`
- `discoveryKeywords`
- `updateFrequency`
- `nonGeographicFlag`
- `publicationState`
- `permissions`

### How to use filters:

These filters can be used like django query filters using __ for related model relationships.

- `/observations/?uuid=d594d53df2612bbd89c2e0e770b5c1a0`
- `/observations/?status=completed`
- `/observations/?results_field__dataPath__startswith=/neodc/esacci`
- `/observations/?discoveryKeywords__name=ESACCI`
- `/observations/?nonGeographicFlag=True`

Filters can be stacked to build an 'AND' relationship. E.g.

- `/observations/?publicationState__in=published,citable&nonGeographicFlag=True`
- `/observations/?publicationState__in=published,citable&discoveryKeyword__name=NDGO0003`

GET /api/v2/observations/44090/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 44090,
    "uuid": "a5205eb0b3324c98b0bf3c50734fd9e1",
    "title": "WOEST: meteorological and wind observations by sensors on the MetSprite UAS -Version 2.1",
    "abstract": "Meteorological and wind observations made by sensors on the MetSprite Uncrewed Airborne System (UAS) operated by Menapia for the Wessex convection (WesCon) experiment Observing the Evolving Structures of Turbulence (WOEST) project.  \r\nThis version 2.1 dataset contains air temperature, pressure, relative humidity, wind, geographic location and platform information for 31 days of flying during the intensive measurement campaign from June to August 2023.",
    "keywords": "UAS",
    "publicationState": "citable",
    "dataPublishedTime": "2025-08-05T13:36:22",
    "doiPublishedTime": "2025-08-05T13:38:24.709759",
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/44089/?format=api",
        "dataPath": "/badc/woest/data/wxUAS/v2.1/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2671667424,
        "numberOfFiles": 1247,
        "fileFormat": "NetCDF"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/12311/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/4755/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84673/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84674/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84675/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84676/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84677/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84678/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84679/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84680/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84681/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84682/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84684/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84685/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84687/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84688/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84690/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84691/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84692/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84693/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84694/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/84695/?format=api"
    ],
    "dataLineage": "Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/13465/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/43720/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/43875/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210844/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210849/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210840/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210841/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/210851/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/44094/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}