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/45818/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 45818,
    "uuid": "4454095caf3d42f5a7d92cb5b06f87e3",
    "title": "Operation Weather Rescue: scanned copies of meteorological observation registers and tabulated records from the Leeds Philosophical Society manuscript archives, 1823-1850",
    "abstract": "This dataset contains scanned copies of the meteorological record from the Leeds Philosophical Society manuscript archives, 1823-1835.\r\n\r\nThe records are stored in Bretherton Library, University of Leeds, with the following description from the library archive:\r\n\r\nContains handwritten records of thermometer and barometer readings, wind direction, weather and rainfall, with journal of observations taken daily from January 1823 to March 1835. Data for later dates inserted loose in the first volume, with rough notes and journals. Vol. 1 is preceded by the minutes of the first meeting of the Meteorological Committee, December 1821.\r\n\r\nBiography or history\r\n\r\nThe Leeds Philosophical and Literary Society was founded in 1819 and played an important role in further education, in both the sciences and the humanities, in Leeds throughout most of the 19th century. The changing patterns of higher education and other circumstances were causing the Society to reconsider the scope of its activities by the time of the First World War; after the War the Society transferred its museum to the City of Leeds and its library to the University, and concentrated its efforts on publishing the results of research, issuing since 1925 two series of 'Proceedings' ('Literary and Historical' and 'Scientific').\r\n\r\nImages also include monthly mean temperatures for the 1840s.\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": "2026-05-20T12:28:51",
    "doiPublishedTime": "2026-05-20T13:32:51",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/45819/?format=api",
        "dataPath": "/badc/operation-weather-rescue/data/LEEDS-PHILOSOPHICAL-INSTITUTE",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 335279640,
        "numberOfFiles": 269,
        "fileFormat": "JPEG"
    },
    "timePeriod": "https://catalogue.ceda.ac.uk/api/v2/times/13128/?format=api",
    "geographicExtent": "https://catalogue.ceda.ac.uk/api/v2/bboxes/5133/?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/13860/?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/219035/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219036/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219037/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219033/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219034/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219038/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219039/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219040/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219041/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/219042/?format=api"
    ],
    "procedureAcquisition": "https://catalogue.ceda.ac.uk/api/v2/acquisitions/45820/?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": []
}