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/28182/?format=api

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

{
    "ob_id": 28182,
    "uuid": "1328bfce79de47bca0d9dc90f90ad7c3",
    "title": "Kjølnes Atmospheric Observatory (KJN): High-precision long-term atmospheric measurements of greenhouse gases (CO, CO2, N2O and CH4) using Off-Axis Integrated-Cavity Output Spectroscopy (OA-ICOS).",
    "abstract": "This dataset contains high-precision long-term atmospheric measurements of greenhouse gases (CO, CO2, N2O and CH4 ) using Off-Axis Integrated-Cavity Output Spectroscopy  (OA-ICOS). The measurements were taken at Kjølnes Atmospheric Observatory (KJN).\r\n\r\nThe Kjølnes Atmospheric Observatory (70°51'07.9\\\"N 29°13'56.3\\\"E) has been operational since August 2013. Two OA-ICOS devices, connected in series and sharing a suite of calibration and reference gases, have been employed to make continuous measurements of atmospheric CO2, CH4, N2O and CO concentrations. The data are calibrated by performing a linear regression upon the weekly measurements of three calibration (tied to the latest NOAA calibration scales) cylinders. The quality control procedure incorporates regular measurements of a dedicated reference cylinder (Target Tank), carefully calibrated at Max-Planck Institute for Biogeochemistry (Germany).",
    "keywords": "Kjølnes Atmospheric Observatory, KJN, greenhouse gas",
    "publicationState": "published",
    "dataPublishedTime": "2019-11-06T17:35:36",
    "doiPublishedTime": null,
    "updateFrequency": "asNeeded",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/28215/?format=api",
        "dataPath": "/badc/kjolnes-observatory/data/mp-oa-icos",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 7368075,
        "numberOfFiles": 143,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7585/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2544/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61123/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61124/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61125/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61126/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/61127/?format=api"
    ],
    "dataLineage": "Data were collected by collaboration between the University of Exeter and the Max Planck Institute for Biogeochemistry; and deposited at the Centre for Environmental Data Analysis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/28185/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/24762/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118772/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118775/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118770/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118776/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118774/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118780/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118777/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/118779/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/28184/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}