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/3462/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3462,
    "uuid": "435b2bca8107d3636c62fbc6b92f6b68",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) Meteorological Particle Sensor Data, Sparsholt College Site",
    "abstract": "Data were collected by the Chilbolton Facility for Atmospheric and Radio Research (CFARR) Meteorological Particle Sensor between 2004 and 2007. During this time the particle sensor was at Sparsholt College, Hampshire, after which it was re-located to Chilbolton. The dataset contains measurements of the size of individual particulates including rain, snow, and hail, as well as estimates of drizzle, total rainfall and liquid water content.",
    "keywords": "CFARR, Chilbolton, meteorology, particle",
    "publicationState": "published",
    "dataPublishedTime": "2003-11-09T13:12:01",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/3463/?format=api",
        "dataPath": "/badc/chilbolton/data/mps_sparsholt",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3491008737,
        "numberOfFiles": 784,
        "fileFormat": "Data are netCDF formatted.\r\n\r\n"
    },
    "timePeriod": "https://catalogue.ceda.ac.uk/api/v2/times/957/?format=api",
    "geographicExtent": "https://catalogue.ceda.ac.uk/api/v2/bboxes/59/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/22455/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/50512/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/54763/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/54764/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55330/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/55331/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94313/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94314/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94315/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94316/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94317/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94318/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94319/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94320/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94321/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94322/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94323/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94324/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94325/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94326/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94327/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94328/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94329/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94330/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94331/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94332/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94333/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94334/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94335/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94336/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94337/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94338/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94339/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94340/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94341/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94342/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94343/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94344/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94345/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94346/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94347/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94348/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94349/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94350/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94351/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94352/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94353/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94354/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94355/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94356/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94357/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94358/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94359/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94360/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94361/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94362/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94363/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94364/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94365/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94366/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94367/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94368/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94369/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94370/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94371/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94372/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94373/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94374/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94375/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94376/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94377/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94378/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94379/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94380/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94381/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94382/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94383/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94384/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94385/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94386/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94387/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94388/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94389/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94390/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94391/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94392/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94393/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94394/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94395/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94396/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94397/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94398/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94399/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94400/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94401/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94402/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94403/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94404/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94405/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94406/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94407/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94408/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94409/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94410/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94411/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94412/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94413/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94414/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94415/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94416/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94417/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94418/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94419/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94420/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/94421/?format=api"
    ],
    "dataLineage": "Data are collected by 4 radar systems, of which the largest is the 3 GHz Doppler radar (CAMRa), and 4 lidar systems, at Chilbolton Observatory, Hampshire.\r\nData are prepared by Chilbolton Facility for Atmospheric and Radio Research (CFARR) staff prior to submission to BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://catalogue.ceda.ac.uk/api/v2/identifiers/2339/?format=api"
    ],
    "projects": [
        "https://catalogue.ceda.ac.uk/api/v2/projects/3464/?format=api"
    ],
    "observationcollection_set": [
        "https://catalogue.ceda.ac.uk/api/v2/observationcollections/3461/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/observationcollections/7378/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://catalogue.ceda.ac.uk/api/v2/rpis/14809/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/14810/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/14811/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/14812/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/14814/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/41895/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/41899/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/14808/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/41896/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/41897/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/41898/?format=api"
    ],
    "procedureAcquisition": "https://catalogue.ceda.ac.uk/api/v2/acquisitions/3467/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://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, attribution required"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}