GET

Observation Instance

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/14525/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 14525,
    "uuid": "6a5f9eedd68f43348692b3bace3eba45",
    "title": "ClearfLo: Atmospheric Chemistry measurements and NAME Airmass Footprint dispersion model output at North Kensington, London",
    "abstract": "ClearfLo (Clean Air for London) Project was a collaborative scientific project involving several academic institutions in the UK, which aimed to set up air pollution monitoring sites alongside meteorological measurements to investigate boundary layer pollution across London.\r\n\r\nThis dataset contains NAME airmass footprint images and measurements of ammonia, nitrate, sulphate, chloride and carbon monoxide at North Kensington, London.",
    "keywords": "ClearfLo, pollution, chemistry",
    "publicationState": "published",
    "dataPublishedTime": "2012-05-21T13:30:25",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14526/?format=api",
        "dataPath": "/badc/clearflo/data/long-term/n-kensington/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3213802655,
        "numberOfFiles": 17346,
        "fileFormat": "Data are NASA Ames formatted. Images are PNG formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3835/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/915/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/41999/?format=api"
    ],
    "dataLineage": "Data are collected and processed by the instrument operators and uploaded to the ClearfLo (Clean Air for London) data archive at BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3933/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3930/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56337/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56338/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56339/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56341/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56342/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56343/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56336/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56347/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/14529/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}