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/44759/?format=api

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

{
    "ob_id": 44759,
    "uuid": "1ce3e71a2ca54807a1360a1ea4a1053a",
    "title": "ICECAPS-MELT: Manual snow properties from two 1-m snow profiles in SW Greenland (May 2024)",
    "abstract": "Snow properties were measured in two 1-m deep snow profiles from southwest Greenland (Camp Raven, 66.48 N, 46.30 W, 2331 m asl) during Spring 2024. The snow profile measurements were made adjacent to an autonomous atmospheric and glaciological platform (the SLEIGH) as part of the ICECAPS-MELT (Integrated Characterization of Energy, Clouds, Atmospheric state, and Precipitation - MEasurements along Lagrangian Transects) experiment. A layer identification was performed and then snow properties were measured: snow grain size, snow crystal habit/form, and hand hardness. Profile 1 was measured on 15 May 2024, 2-3 meters from the eventual SLEIGH installation. Profile 2 was measured on 18 May 2024, 20 m from the eventual SLEIGH installation.\r\n\r\nThis work was US-led, US-UK collaboration co-funded by the US National Science Foundation and the UK National Environment Research Council.",
    "keywords": "Greenland,Camp Raven,snow profile,grain size,hand hardness,layer identification,crystal form,crystal habit,ICECAPS,ICECAPS-MELT, Greenland Ice Sheet",
    "publicationState": "citable",
    "dataPublishedTime": "2026-01-30T17:29:10",
    "doiPublishedTime": "2026-02-02T16:00:26.267736",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/45221/?format=api",
        "dataPath": "/badc/icecaps-melt/data/202405CampRavenSnowProps",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 4090,
        "numberOfFiles": 3,
        "fileFormat": "Data are BADC-CSV formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/12629/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/4865/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92721/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92732/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92733/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92738/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92739/?format=api"
    ],
    "dataLineage": "Manual snow property measurements of snow grain size, snow crystal habit/form, and hand hardness were made using American Avalanche Association standards from Snow, Weather, and Avalanche Guidelines, 4th Edition, 2022. Snow grains > 0.5 mm were recorded to the nearest 0.5 mm, otherwise very fine grains recorded as 0.1, 0.3, 0.5 mm. The layer identification was done by sliding a snow crystal card downward through the snow pit face to test for changes in tensile strength. These layers were cross-checked against the visual appearance of each layer. The hand hardness classifications were converted to a 0-5 scale, with 0.5 increments allowed when the snow was determined to be in between two classifications.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/13701/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/38309/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/44850/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214293/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214792/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214295/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214296/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214297/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214298/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214294/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214958/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214304/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214305/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214306/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214307/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214308/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214309/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/214310/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/44760/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2528/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://creativecommons.org/licenses/by/4.0/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}