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/11385/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 11385,
    "uuid": "561377db190e776a0294aedea38d2b7e",
    "title": "World Climate Research Programme's (WCRP) Coupled Model Intercomparison Project phase 3 (CMIP3) Project Database: CM2.0 - AOGCM at Geophysical Fluid Dynamics Laboratory,NOAA data",
    "abstract": "Data from the Geophysical Fluid Dynamics Laboratory CM2.0 - AOGCM simulations",
    "keywords": "CMIP3",
    "publicationState": "published",
    "dataPublishedTime": "2008-02-29T11:53:57",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/11386/?format=api",
        "dataPath": "/badc/cmip3_drs/data/cmip3/output/GFDL/CM2/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2033852973319,
        "numberOfFiles": 3280,
        "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/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/9045/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50418/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50420/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50426/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50475/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50481/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50498/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50509/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50554/?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/50575/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50577/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50586/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50589/?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/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/52748/?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/54088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54090/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54091/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54092/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54093/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54094/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54228/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54336/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54697/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57164/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/57654/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60438/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66923/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66929/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66933/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66934/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66935/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66936/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66937/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66938/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66939/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66940/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66942/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66943/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66944/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66945/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66946/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66947/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66948/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66949/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66950/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66951/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66952/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66953/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66954/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66955/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66956/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66957/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66960/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68261/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68263/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68266/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68267/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68268/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68270/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68271/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68273/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68274/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68275/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68276/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68277/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68278/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68279/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/82349/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/82350/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/82351/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/82352/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/82353/?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/7567/?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/40522/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40521/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40524/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40525/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105001/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51159/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40523/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/11354/?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"
        }
    ]
}