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/12381/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 12381,
    "uuid": "08843f747a154639a7729d7daf4ea4a6",
    "title": "CanCM4 model output prepared for APPOSITE ensemble prediction experiment",
    "abstract": "Atmosphere and Ocean components;  Frequency: daily and monthly  \r\n\r\nVariables Atmosphere daily:\r\ntas  uas  vas  zg500\r\n\r\nVariables Atmosphere monthly:\r\ncl   clt  evspsbl  hfss  hus  prc   prw  rlds  rlut    rsds    rsdt  rsuscs  rsutcs   ta   tauu  ua   va   wap\r\ncli  clw  hfls     hurs  pr   prsn  psl  rlus  rlutcs  rsdscs  rsus  rsut    sfcWind  tas  tauv  uas  vas  zg500\r\n\r\nVariables Ocean daily:\r\nrsdssi  sic  sit  snc  snd  snw  tsice  usi  vsi\r\n\r\nVariables Ocean monthly:\r\nhtovovrt  mlotst  msftmyz  rsdssi  sic  sit  sltovovrt  snd  so  sos  thetao  tos  tsice  uo  vo",
    "keywords": "APPOSITE prediction CanCM4 model arctic",
    "publicationState": "published",
    "dataPublishedTime": "2015-06-23T02:37:17",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12382/?format=api",
        "dataPath": "/badc/apposite/data/CanCM4/pred",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 415318358248,
        "numberOfFiles": 41602,
        "fileFormat": "NetCDF"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3574/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6021/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6022/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6255/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50416/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50418/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50419/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50420/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50427/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50429/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50431/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50475/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50496/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50498/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50555/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50557/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50579/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50583/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50586/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50587/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50588/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50589/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50590/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50591/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50595/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50596/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50598/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50599/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50600/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51206/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52741/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/52755/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53107/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53109/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53110/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53111/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53112/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53137/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54415/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54416/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54692/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57953/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61071/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61363/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61366/?format=api"
    ],
    "dataLineage": "Supplied model data ingested as is in the CEDA Archive.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8382/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/11971/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/11700/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47248/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47244/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47251/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47245/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47246/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47247/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47249/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/47250/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54759/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}