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/44585/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 44585,
    "uuid": "bed3b1f2ce0c4ba780927e9fac04f696",
    "title": "MIDAS Open: UK mean wind data, v202507",
    "abstract": "The UK mean wind data contain the mean wind speed and direction, and the direction, speed and time of the maximum gust, all during 1 or more hours, ending at the stated time and date. The data were collected by observation stations operated by the Met Office across the UK and transmitted within the following message types: SYNOP, HCM, AWSHRLY, DLY3208, HWNDAUTO and HWND6910. The data spans from 1949 to 2024.\r\n\r\nThis version supersedes the previous version of this dataset and a change log is available in the archive, and in the linked documentation for this record, detailing the differences between this version and the previous version. The change logs detail new, replaced and removed data. These include the addition of data for calendar year 2024.\r\n\r\nFor further details on observing practice, including measurement accuracies for the message types, see relevant sections of the MIDAS User Guide linked from this record (e.g. section 3.3 details the wind network in the UK,  section 5.5 covers wind measurements in general and section 4 details message type information).\r\n\r\nThis dataset is part of the Midas-open dataset collection made available by the Met Office under the UK Open Government Licence, containing only UK mainland land surface observations owned or operated by the Met Office. It is a subset of the fuller, restricted Met Office Integrated Data Archive System (MIDAS) Land and Marine Surface Stations dataset, also available through the Centre for Environmental Data Analysis - see the related dataset section on this record.",
    "keywords": "Met Office, MIDAS, UK, meteorology, wind speed, wind direction, gust",
    "publicationState": "citable",
    "dataPublishedTime": "2025-07-18T14:13:06",
    "doiPublishedTime": "2025-07-18T14:30:52.178004",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/44571/?format=api",
        "dataPath": "/badc/ukmo-midas-open/data/uk-mean-wind-obs/dataset-version-202507/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 9239183702,
        "numberOfFiles": 15897,
        "fileFormat": "Data are BADC-CSV formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/12512/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/17/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76672/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76674/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76675/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76678/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76679/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76680/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76682/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76690/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76694/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76695/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76696/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76697/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76838/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76840/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76841/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76842/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76844/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76845/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76846/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76847/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76848/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76849/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/76851/?format=api"
    ],
    "dataLineage": "Data collated by the Met Office and archived in the Met Office's MIDAS database. Data are extracted from a sub-set of available tables and delivered to Centre for Environmental Data Analysis (CEDA) approximately on a yearly basis.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/13450/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/1186/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/26184/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213304/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213305/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213306/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/213307/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/1194/?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"
        }
    ]
}