Observation Instance – Django REST framework

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/3754/?format=api

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3754,
    "uuid": "fa3bdb659b2c9caa9ec3c6b931e6c215",
    "title": "ACSOE OXICOA EASE-96: CAS Tropospheric Trajectory Model Data for the Mace Head Atmospheric Research Centre",
    "abstract": "The Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) OXIdising Capacity of the Ocean Atmosphere (OXICOA) Eastern Atlantic Spring/Summer Experiment in 1996 (EASE-96) Centre for Atmospheric Science, University of Cambridge (CAS) Trajectory Model Data contains outputs of back trajectory model. The model used historic forecasts from European Centre for Medium-Range Weather Forecasts (ECMWF) to understand the origin and transportation of various atmospheric chemical species measured at he Mace Head Atmospheric Research Centre.",
    "keywords": "ACSOE, OXICOA, EASE, Back Trajectory",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-24T22:19:39",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12809/?format=api",
        "dataPath": "/badc/acsoe/data/ease-96/macehead-trajectories/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 191413,
        "numberOfFiles": 4,
        "fileFormat": "The data files are NASA-Ames formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3457/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/508/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were created by the trajectory model created by the Centre for Atmospheric Science, University of Cambridge using the forecast model data from ECMWF as a part of ACSOE campaign, and were submitted to BADC for archival.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2517/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12801/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3636/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18008/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18006/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18007/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18012/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18075/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18015/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18016/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50145/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50144/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18013/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18014/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18009/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18010/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18011/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18017/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18018/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18019/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/11874/?format=api",
    "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"
        }
    ]
}