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/3834/?format=api

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

{
    "ob_id": 3834,
    "uuid": "a67f1b4d9db7b1528b800ed48198bdac",
    "title": "ECMWF Operational Regular Gridded Data at 1.125 degrees resolution",
    "abstract": "Regularly gridded operational data at 1.125 degree resolution from 2000 to present containing the ongoing analyses and forecasts produced by the most recent ECMWF Integrated Forecasting System (IFS) model. The IFS is regularly updated as improvements are made to the model, computing facilities and observations used in data assimilation.",
    "keywords": "ECMWF, operational, forecast, analysis, surface, model",
    "publicationState": "published",
    "dataPublishedTime": "2012-06-01T14:32:08",
    "doiPublishedTime": null,
    "updateFrequency": "daily",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3835/?format=api",
        "dataPath": "/badc/ecmwf-op/data/gridded_1.125",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2122720377063,
        "numberOfFiles": 233738,
        "fileFormat": "Data are GRIB-1 formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1094/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22870/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54846/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55389/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55390/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55391/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55392/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/55393/?format=api"
    ],
    "dataLineage": "Data extracted from European Centre for Medium-Range Weather Forecasts (ECMWF) MARS system and transfered to BADC daily, 10 days in arrears of production.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2574/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3459/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3826/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18983/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18988/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18982/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18985/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18986/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18984/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/3829/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2609/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "ecmwfop",
            "label": "restricted: ecmwfop group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ecmwf_op_agreement.pdf",
            "licenceClassifications": "academic"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}