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/34846/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 34846,
    "uuid": "a5328df497c84df1a392039f56dd211b",
    "title": "BAS-MASIN flight 314: airborne meteorological observations from the ORCHESTRA project",
    "abstract": "In-situ airborne observations collected during flight 314 on 13 February 2019 by the Meteorological Airborne Science Instrumentation (MASIN) on board the British Antarctic Survey (BAS) Twin-otter aircraft for the ORCHESTRA - Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports project. This dataset contains the core meteorological data from the MASIN instrument suite. \r\n\r\nData were collected over the Falkland Islands area.",
    "keywords": "ORCHESTRA, aircraft, meteorology, BAS, MASIN, twin-otter",
    "publicationState": "published",
    "dataPublishedTime": "2022-02-22T12:01:36",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/34847/?format=api",
        "dataPath": "/badc/orchestra/data/twinotter/flight314_20190213",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 232249710,
        "numberOfFiles": 4,
        "fileFormat": "MASIN data are in NetCDF format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/9654/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2974/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65713/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65714/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65716/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65717/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65718/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65719/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65720/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65721/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65722/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65723/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65724/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65725/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65726/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65727/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65728/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65729/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65730/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65732/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65733/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65738/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65739/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65740/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65741/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65742/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65743/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65744/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65745/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65748/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65750/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65751/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65754/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65755/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65756/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65757/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65759/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65760/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65761/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65762/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65763/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65765/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65766/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65768/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65770/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65772/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65774/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65775/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65776/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65777/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65779/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65780/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65781/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65782/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65783/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65784/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65785/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65788/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65789/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65790/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65791/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65792/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65793/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65796/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65798/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65799/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65800/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65801/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65802/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65803/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65804/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/65805/?format=api"
    ],
    "dataLineage": "Data were collected and processed by British Antarctic Survey (BAS) and submitted to the Centre for Environmental Data Analysis (CEDA).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/32626/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/32624/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7571/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169432/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169433/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169434/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169435/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169436/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169437/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169438/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169439/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169440/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/169441/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/34848/?format=api",
    "procedureCompositeProcess": null,
    "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"
        }
    ]
}