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/41746/?format=api

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

{
    "ob_id": 41746,
    "uuid": "657fd962660347de91f477ee61c70207",
    "title": "FAAM C381 CCREST-M flight: Airborne atmospheric measurements from core instrument suite on board the BAE-146 aircraft",
    "abstract": "Airborne atmospheric measurements from core instrument suite data on board the FAAM BAE-146 aircraft collected for Characterising CiRrus and icE cloud acrosS the spectrTrum (CCREST-M) project.  This flight took place on the 21st March 2024 over the UK.",
    "keywords": "CCREST-M, FAAM, airborne, atmospheric measurments",
    "publicationState": "published",
    "dataPublishedTime": "2024-05-21T16:20:42",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/41745/?format=api",
        "dataPath": "/badc/faam/data/2024/c381-mar-21",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 5840859811,
        "numberOfFiles": 45,
        "fileFormat": "Data are netCDF and NASA-Ames formatted. Ancillary files may be plain ASCII or PDF formatted. Image files may be PNG formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11708/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/4425/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/49302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50851/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50853/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50856/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50857/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50934/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50936/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50937/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50942/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50949/?format=api",
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    ],
    "dataLineage": "Data were collected by instrument scientists during the flight before preparation and delivery for archiving at the Centre for Environmental Data Analysis (CEDA).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/41680/?format=api"
    ],
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