Observation Instance – Django REST framework

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/45823/?format=api

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 45823,
    "uuid": "72934d7ff4e042ee840e55e90b3a6ea6",
    "title": "Operation Weather Rescue: scanned copies of meteorological observation registers and tabulated records from the Aberdeen Grammar School manuscript archives, 1829-1839",
    "abstract": "This dataset contains scanned copies of the meteorological record from the Aberdeedn Grammar School manuscript archives, 1829-1839.\r\n\r\nScanned by Aberdeen City Archives: REF ED/GR6S/A58/33\r\n\r\nMarch 1829 - December 1839\r\n\r\nNational Archives of Scotland reference MET1/4/19 (their version may extend to 1849).\r\n\r\nThe imaging of the volumes was funded by the National Centre for Atmospheric Sciences and effort supported through the GLoSAT project.",
    "keywords": "Reports, Weather, Meteorology",
    "publicationState": "citable",
    "dataPublishedTime": "2026-05-20T12:32:48",
    "doiPublishedTime": "2026-05-20T13:56:35.902726",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/45824/?format=api",
        "dataPath": "/badc/operation-weather-rescue/data/SCOTLAND/ABERDEEN_1829-1839/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 984513472,
        "numberOfFiles": 4,
        "fileFormat": "PDF"
    },
    "timePeriod": "https://catalogue.ceda.ac.uk/api/v2/times/13130/?format=api",
    "geographicExtent": "https://catalogue.ceda.ac.uk/api/v2/bboxes/5135/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/10201/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/13200/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/20927/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/21954/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/25388/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93266/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93267/?format=api"
    ],
    "dataLineage": "Data were digitised as part of the Operation Weather Rescue project and sent to the Centre for Environmental Data Analysis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://catalogue.ceda.ac.uk/api/v2/identifiers/13866/?format=api"
    ],
    "projects": [
        "https://catalogue.ceda.ac.uk/api/v2/projects/27037/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/projects/44102/?format=api"
    ],
    "observationcollection_set": [
        "https://catalogue.ceda.ac.uk/api/v2/observationcollections/28048/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219057/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219058/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219059/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219060/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219061/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219062/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219063/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219064/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219065/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219066/?format=api"
    ],
    "procedureAcquisition": "https://catalogue.ceda.ac.uk/api/v2/acquisitions/45832/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}