GET

Observation Instance

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/32576/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 32576,
    "uuid": "0613b74ecc574fa7b6ac8a22838c5f81",
    "title": "Exploring the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office’s Unified Model: nitrate and nitric acid simulation data",
    "abstract": "This dataset contains nitrate and nitric acid simulation data to explore the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office’s Unified Model.\r\n\r\nThe files are seperated into directories by simulation name - 1. A control simulation with no nitrate aerosol (CNTL); 2. A simulation with NH4·NO3 reaching equilibrium instantaneously (INSTANT); 3. A simulation with the HNO3 uptake rate set to 0.193 (FAST); and 4. A simulation with the HNO3 uptake rate 0.001 (SLOW). All simulations are performed with the Met Office Unified Model (UM or MetUM) in an N96L85 resolution.",
    "keywords": "Nitrate, nitric acid, Met Office, UM",
    "publicationState": "citable",
    "dataPublishedTime": "2021-05-12T09:33:37",
    "doiPublishedTime": "2021-05-14T10:25:27.211604",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32577/?format=api",
        "dataPath": "/badc/deposited2021/nitrates_metoffice-um/data/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 114355323714,
        "numberOfFiles": 192,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8948/?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/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9042/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21990/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22005/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/34066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50510/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50512/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51186/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51187/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54872/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54873/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54874/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54875/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70600/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70601/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70602/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70603/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70604/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70605/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70606/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70607/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70608/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70609/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70610/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70611/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/70612/?format=api"
    ],
    "dataLineage": "The data is model output from MetUM simulations performed on the Met Office Cray XC40 supercomputer. The output was then processed and made CF-compliant using Python with the Iris module.  The data were sent to the Centre for Environmental Data Analysis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10886/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/32578/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144992/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144991/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144993/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144994/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144995/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144996/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144997/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144998/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168959/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144999/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145000/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145001/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145002/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145003/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145004/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145005/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145006/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/145007/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/475/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2561/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/non-commercial-government-licence/version/2/",
            "licenceClassifications": "personal, academic, policy"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}