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/7774/?format=api

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

{
    "ob_id": 7774,
    "uuid": "0844186db1ba9e20319a2560f8d61651",
    "title": "British Antarctic Survey Twin Otter aircraft Meteorological Airborne Science INstrumentation (MASIN) core data for the Aerosol Cloud Coupling and Climate Interactions in the Arctic (ACCACIA) project.",
    "abstract": "ACCACIA was part of the NERC Arctic research programme. (NERC Reference: NE/I028858/1). ACCACIA aimed to improve our understanding of aerosol-cloud interactions in the Arctic, and the potential changes and feedbacks that may result from decreasing Arctic sea ice cover in the future. In situ measurements have been made during two field campaigns utilising ship-based measurements of surface aerosol sources and airborne measurements of aerosol and cloud microphysical properties, boundary layer dynamics, and radiative forcing. The observations have been complemented by modelling studies on a range of scales: from explicit aerosol and cloud microphysics process modelling, through large eddy simulation and mesoscale models, up to global climate models.\r\n\r\n\r\nThis dataset contains meteorological data measured by the Meteorological Airborne Science INstrumentation (MASIN) onboard the British Antarctic Survey Twin Otter aircraft in the North Sea and Svalbard, Norway during the Aerosol Cloud Coupling and Climate Interactions in the Arctic (ACCACIA)  project (2013).",
    "keywords": "ACCACIA, BAS Masin, temperature, dew point, humidity, wind speed",
    "publicationState": "citable",
    "dataPublishedTime": "2014-09-10T16:30:48",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/7775/?format=api",
        "dataPath": "/badc/accacia/data/masin/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 10208110947,
        "numberOfFiles": 88,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/2240/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1991/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21562/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21563/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21564/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21572/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21575/?format=api"
    ],
    "dataLineage": "Data were collected and prepared by the British Antartic Survey (BAS) before delivery for achiving at the BADC.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5036/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/8510/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9518/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12286/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7571/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50084/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32196/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32195/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32201/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32198/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32199/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/32197/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/14777/?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"
        }
    ]
}