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/11518/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 11518,
    "uuid": "55caaae2e88482053283a7b6f1f3b155",
    "title": "World Climate Research Programme's (WCRP) Coupled Model Intercomparison Project phase 3 (CMIP3) Project Database: CSIRO Mark 3.0 at CSIRO, Australia data",
    "abstract": "Data from the CSIRO Mark 3.0 simulations ",
    "keywords": "CMIP3",
    "publicationState": "published",
    "dataPublishedTime": "2008-02-29T11:52:52",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/11519/?format=api",
        "dataPath": "/badc/cmip3_drs/data/cmip3/output/CSIRO/MK3/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 1222063771514,
        "numberOfFiles": 3299,
        "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/1635/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/1636/?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/6086/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6087/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6107/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6690/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6691/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6692/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6693/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7560/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8013/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8167/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/8231/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9042/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9045/?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/9715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9716/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9717/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9718/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9719/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9720/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9721/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9725/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9726/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9730/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9732/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9733/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9739/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9740/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9742/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9750/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9751/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9754/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9755/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9759/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9844/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9847/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9851/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9852/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9853/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9859/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9860/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9874/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9880/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9881/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9882/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10060/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10062/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10064/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10067/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10068/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10069/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10070/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10071/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10072/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10073/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10074/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10075/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10076/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10077/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10079/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10080/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10081/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10082/?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/7638/?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/40787/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40789/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40790/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40791/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105006/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40786/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51157/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/40788/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/11110/?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"
        }
    ]
}