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/32159/?format=api

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

{
    "ob_id": 32159,
    "uuid": "dc723f82939843f199fff78778d5b8d0",
    "title": "Iceland Greenland seas Project (IGP): precipitation measurements from the University of Bergen Micro Rain Radar (MRR2) on board the NATO Research Vessel Alliance",
    "abstract": "This dataset contains measurements from the Micro Rain Radar (MRR2), manufactured by Meteorologische Messtechnik GmbH (Metek) installed onboard the NATO Research Vessel Alliance during the Iceland Greenland Seas Project. \r\nThe MRR2 is a frequency modulated (FM), continuous wave (CW) Radar (Radio Detection and Ranging) that obtains doppler spectral density at each range gate with a time resolution of 10 s. The terminal velocity of the precipitation targets (vT) is the primarily retrieved variable from these doppler spectral density observations. Additionally, drop size distribution and the corresponding moments, for example liquid water content (LWC), rain rate (RR) and Radar Reflectivity (Ze) are retrieved with post processing.\r\nThe initial installation location from 03-13 Feb 2018 was midship on the weatherdeck. At Reykjavik harbour the MRR2 worked as expected, while at sea artificial signals at three elevations appeared. The artificial signals were due to an interference on the power cable or power source. On 11 Feb 2018, a separate power source for the MRR2 could be secured, and it subsequently operated without interferences after ~12 UTC that day. For further details and figures on the MRR2 and its operation in the cruise please read the attached documentation.",
    "keywords": "IGP, meterological, buoy, ocean currents, wave height",
    "publicationState": "published",
    "dataPublishedTime": "2021-02-11T16:25:57",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/33075/?format=api",
        "dataPath": "/badc/igp/data/IGP_MRR2",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 7816201463,
        "numberOfFiles": 98,
        "fileFormat": "Data are netCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7150/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2279/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50512/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60553/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60555/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60556/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60557/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60558/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60560/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60562/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60563/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60564/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60572/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60575/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60576/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60577/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60578/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60579/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60580/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60581/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60582/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60583/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60584/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60585/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60586/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60587/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60588/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60589/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60590/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60591/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/83920/?format=api"
    ],
    "dataLineage": "Data collected during the IGP field campaign, then processed and quality controlled at the University of Bergen.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24899/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/27445/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142977/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142978/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142980/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142981/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142982/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142983/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142984/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142985/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142979/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/32161/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2543/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}