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/14243/?format=api

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

{
    "ob_id": 14243,
    "uuid": "0057e9d2b4e047be82a92ef34cd79099",
    "title": "URGENT PROFIL: Summer 1999 campaign airborne in-situ atmospheric chemistry and meteorology measurements by the University of Manchester's CESSNA aircraft",
    "abstract": "An Instrumented Aircraft Facility to Provide Vertical Profiles of Wind, Temperature, Turbulence, Sensible Heat, Aerosol and Trace-Gas Concentrations and Fluxes within the Urban Boundary Layer for PUMA (Pollution in Urban Midlands Atmospheres). Consortia Model Validation (PROFIL) is a NERC Urban Regeneration and the Environment (URGENT) Air project (GST/02/2225 - Duration: 1/04/1999 - 31/3/2002) led by Dr Martin Gallagher, University of Manchester.\r\n\r\nThis dataset contains airborne in-situ atmospheric chemistry and meteorology measurements by the University of Manchester's CESSNA aircraft from flights during the URGENT PROFIL Summer 1999 campaign.",
    "keywords": "URGENT, PROFIL, Chemistry, Pollutants, Air pollution, Meteorology",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-20T11:43:00",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/14244/?format=api",
        "dataPath": "/badc/urgent/data/profil/Summer_1999",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 4174162,
        "numberOfFiles": 12,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3770/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/83/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/23052/?format=api"
    ],
    "dataLineage": "Data files provided as is by the PROFIL campaign participants.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/14247/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/4451/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55229/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55223/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55224/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55226/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55227/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55228/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55230/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55222/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55225/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55231/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55232/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/4485/?format=api",
    "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"
        }
    ]
}