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/11424/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 11424,
    "uuid": "21865e75b34845999c817ef99c49f224",
    "title": "World Climate Research Programme's (WCRP) Coupled Model Intercomparison Project phase 3 (CMIP3) Project Database: Bergen Climate Model (BCM) Version 2 at Bjerknes Centre for Climate Research (BCCR) data",
    "abstract": "Data from the Bjerknes Centre for Climate Research Bergen Climate Model (BCM) Version 2 simulations",
    "keywords": "CMIP3",
    "publicationState": "published",
    "dataPublishedTime": "2008-02-29T11:42:33",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/11425/?format=api",
        "dataPath": "/badc/cmip3_drs/data/cmip3/output/BCCR/BCM2/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 861986416303,
        "numberOfFiles": 1481,
        "fileFormat": "Data are netCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/4979/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/1050/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6019/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6020/?format=api",
        "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/6059/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6107/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6647/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6691/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6693/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6814/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6816/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7899/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8014/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8015/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8167/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9045/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9616/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9713/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9714/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9716/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9742/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9743/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9750/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9846/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9883/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9884/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9885/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9886/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9887/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9888/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9889/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9890/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9891/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9892/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9893/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9894/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9895/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9896/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9897/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9898/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9899/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9900/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9901/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9902/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9903/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9904/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9905/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9906/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9907/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9909/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9910/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9911/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9912/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9913/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9914/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9915/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9916/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9917/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9918/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9919/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9920/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9921/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9922/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9923/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9924/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9925/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9926/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9928/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9929/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9930/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9931/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9932/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9934/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9935/?format=api"
    ],
    "dataLineage": "Data was converted to CF netCDF by the data provider.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/7589/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/426/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/423/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51146/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40603/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40602/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40605/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40606/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40607/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40604/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/11296/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2599/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "cmip3",
            "label": "restricted: cmip3 group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}