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/44283/?format=api

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

{
    "ob_id": 44283,
    "uuid": "f4631b76dbae432ead809836805944d7",
    "title": "ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Southern hemisphere sea ice thickness from Envisat on a monthly grid (L3C), v4.0",
    "abstract": "This dataset provides a Climate Data Record of Sea Ice Thickness for the southern hemisphere polar region, derived from the RA-2 (Radar Altimeter -2) instrument on the Envisat satellite. This product was generated in the context of the ESA Climate Change Initiative Programme (ESA CCI) by the Sea Ice CCI (Sea_Ice_cci) project.\r\n\r\nIt provides monthly sea ice thickness data annually on the satellite measurement grid (Level 3C) at the full sensor resolution for the period October 2002 to March 2012.",
    "keywords": "Sea Ice, ESA, CCI, Arctic",
    "publicationState": "published",
    "dataPublishedTime": "2025-11-20T12:15:20",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "pending",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/44969/?format=api",
        "dataPath": "/neodc/esacci/sea_ice/data/sea_ice_thickness/L3C/envisat/v4.0/SH",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 86653784,
        "numberOfFiles": 115,
        "fileFormat": "netcdf"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11523/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2205/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13253/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53130/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53131/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66291/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/74945/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75274/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75275/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75276/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75277/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75278/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75280/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75281/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75282/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75283/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75284/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75285/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75286/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75287/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI Sea Ice project team and were supplied to CEDA in the context of the ESA CCI Open Data Portal Project",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14368/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/14367/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/45082/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211825/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211819/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211820/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211821/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211822/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211826/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/211827/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/41416/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2573/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_seaice_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1140,
            "name": "ESACCI"
        }
    ]
}