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/2261/?format=api

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

{
    "ob_id": 2261,
    "uuid": "28439ba48d8b6f27820eb008ef69a34c",
    "title": "ACSOE ACE HILLCLOUD-97: Marine Boundary Layer Aerosol Data from Paiba, Tenerife, Spain",
    "abstract": "Marine Boundary Layer Ammonia and Nitrogen Dioxide Data from Paiba, Tenerife, Spain, designated as h3 or Site 3, collected as part of the HILLCLOUD-97 field campaign. The data were collected as part of the HILLCLOUD-97 experiment of the Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) Programme's Aerosol Characterisation Experiment (ACE) project. The HILLCLOUD experiments utilised a hill cap cloud which forms over a ridge on the north east of the island of Tenerife was used as a natural flow through reactor. The dataset contains the size distribution, size dependent chemical composition and hygroscopic properties of the marine and modified continental aerosol arriving at the North coast of the island.",
    "keywords": "ACSOE, ACE, HILLCLOUD, Aerosol, Cloud, Marine Boundary Layer",
    "publicationState": "published",
    "dataPublishedTime": "2007-03-24T00:21:44",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/12829/?format=api",
        "dataPath": "/badc/acsoe/data/hillcloud-97/h3/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 10123234,
        "numberOfFiles": 11,
        "fileFormat": "The data files are NASA-Ames formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3470/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/685/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data collected by instruments in Paiba, Tenerife, Spain. Data acquired by BADC for archiving as programme was underway.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1573/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12822/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/2212/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10469/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10475/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10474/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10473/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10470/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10483/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10471/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10484/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10476/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10472/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10477/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10478/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10479/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10480/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10481/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/10482/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/2263/?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"
        }
    ]
}