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/38998/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 38998,
    "uuid": "70dff22803c74108a696eac0a8a58064",
    "title": "PRIMAVERA: the CNRM-CERFACS team CNRM-CM6-1-HR model output for the \"highres-future\" experiment",
    "abstract": "PRIMAVERA Project data from the the CNRM-CERFACS team CNRM-CM6-1-HR model output for the \"coupled future 2015-2050 using a scenario as close to CMIP5 RCP8.5 as possible within CMIP6\" (highres-future) experiment. These are available at the following frequencies: Prim3hr, Prim6hrPt, PrimOday, PrimOmon, PrimSIday, Primday, PrimdayPt and Primmon. The runs included the ensemble member: r1i1p1f2.\n\nPRIMAVERA was a European Union Horizon2020 (grant agreement 641727) project.\n\nThe the CNRM-CERFACS team team consisted of the following agencies: Centre National de Recherches Météorologiques (CNRM) and Centre Européen de Recherche et Formation Avancée en Calcul Scientifique (CERFACS).",
    "keywords": "PRIMAVERA, HighResMIP, climate change, CNRM-CERFACS, CNRM-CM6-1-HR, highres-future, Prim3hr, Prim6hrPt, PrimOday, PrimOmon, PrimSIday, Primday, PrimdayPt, Primmon",
    "publicationState": "published",
    "dataPublishedTime": "2022-11-14T18:47:25.763840",
    "doiPublishedTime": null,
    "updateFrequency": "asNeeded",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/38999/?format=api",
        "dataPath": "/badc/cmip6/data/PRIMAVERA/HighResMIP/CNRM-CERFACS/CNRM-CM6-1-HR/highres-future",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 962670529186,
        "numberOfFiles": 346,
        "fileFormat": "Data are netCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/10791/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2638/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2639/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6024/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6814/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6816/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7768/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/7770/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9617/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9756/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9757/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11067/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11069/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11073/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/12585/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19638/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19639/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19696/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27598/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27599/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27600/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27676/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27677/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27685/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/27842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28175/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/29245/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/29246/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/29259/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/46703/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50162/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50163/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50168/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50169/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50170/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50185/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50186/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50192/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50193/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50197/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50200/?format=api"
    ],
    "dataLineage": "Data were produced and verified by the CNRM-CERFACS team scientists before upload to the Centre for Environmental Data Analysis (CEDA) and publication via the Earth Systems Grid Federation (ESGF).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/38980/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/38997/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187564/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187575/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187576/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/187572/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/38620/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2520/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/CMIP6_Terms_of_Use.pdf",
            "licenceClassifications": ""
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}