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/6569/?format=api

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

{
    "ob_id": 6569,
    "uuid": "b52f65656f56b5465588a103b1f82b23",
    "title": "APPRAISE ACES: University of Manchester Aerosol Chamber Data",
    "abstract": "The ACES (Aerosol Coupling in the Earth System) project was an integrated research programme that aims to reduce uncertainties in our fundamental understanding of the formation of BSOA (Biogenic Secondary Organic Aerosol) and the subsequent impact on atmospheric composition, through coordinated chamber studies, field studies, process model development, and application of atmospheric models of chemistry and transport to assess coupling and feedbacks in the Earth system.\r\n\r\nThis dataset contains measurements of mixing ratios of NO, NO2, NOX, and O3, using different gaseous precursors and concentrations. The following precursors were used:\r\nAlpha-pinene, \r\nBeta-caryophyllene, \r\nIsoprene, \r\nLimonene, \r\nLinalool,\r\nMyrcene\r\nat the following concentrations:\r\n30 parts per billion,\r\n50 parts per billion,\r\n250 parts per billion\r\n",
    "keywords": "APPRAISE ACE, Aerosol, Chamber",
    "publicationState": "published",
    "dataPublishedTime": "2010-07-20T10:51:15",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/6570/?format=api",
        "dataPath": "/badc/appraise/data/aces/man-aerosol-chamber",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3868882,
        "numberOfFiles": 82,
        "fileFormat": "Data are NASA Ames formatted\r\n\r\n\r\n"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1930/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/149/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/83854/?format=api"
    ],
    "dataLineage": "Data for the period 2005 to 2010, provided as is by the APPRAISE campaign participants for archiving at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/4288/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8352/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/6531/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/6518/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28364/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28365/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28366/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28367/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28369/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43380/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43384/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/28363/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/46745/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43381/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/74191/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/6572/?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"
        }
    ]
}