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/43607/?format=api

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

{
    "ob_id": 43607,
    "uuid": "5934d2a5706c4a3c9caa15188d9ed24b",
    "title": "Met Office Cardington: vertical profile measurements from Vaisala radiosonde ascents, 1996-2024",
    "abstract": "This repository provides data from all radiosondes launched at Cardington between 1996-2024.\r\nThe sonde unit was operated by the Met Office Observation-based research Boundary Layer Facility, at the semi-rural field site (18 Ha) of Cardington (52° 06′ N, 00° 25′ W, 29 m ± 1 m amsl) in central-southern England.\r\n\r\nSonde launches were performed with a mean ascent rate of 2.5 m s-1. The slower ascent rate compared to an operational sonde ascent rate enables improved vertical sampling resolution in the atmospheric boundary layer whilst maintaining a sufficient ventilation rate over the sensors. From 1996-2002, a RS80 device was used with ThermoCap, HumiCap, BaroCap sensors, and between 2006-2014 a RS92-SGPB device was used with ThermoCap, HumiCap, capacitive pressure sensors. Sonde launches from 2014-2024 used an RS41-SG(P) device with PRT, silicon capacitive pressure (SGP), and HumiCap sensors.\r\n\r\nThe launches of radiosondes were performed on a project related basis only and all available ascent data has been provided from the Cardington facility. Please note that there were no ascents in 2022.\r\n\r\nA full list of NetCDF variables can be found in \"Continuous meteorological surface and soil records (2004-2024) at the Met Office surface site of Cardington, UK.\" Osborne et al. ESSD (2025). This paper should be referenced in any research/publications pertaining to this dataset.\r\n\r\nTo ensure optimal traceability and transparency of data, comprehensive metadata is included.",
    "keywords": "observation, radiosonde, wind, speed, temperature, relative, humidity, measurement, Cardington, Met Office",
    "publicationState": "citable",
    "dataPublishedTime": "2025-04-26T08:13:13",
    "doiPublishedTime": "2025-04-28T08:30:42",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/43744/?format=api",
        "dataPath": "/badc/ukmo-cardington/data/complete-collection/sonde/vaisala",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 695754351,
        "numberOfFiles": 1892,
        "fileFormat": "Data are NetCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/12159/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/39/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/62353/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75700/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75796/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75798/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75799/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75800/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75801/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75802/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75803/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75804/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75805/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75806/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75807/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75808/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75809/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75810/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75811/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75812/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75813/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75814/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75815/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75816/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75817/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75818/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75819/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75820/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75821/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75822/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75825/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75826/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75827/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75828/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75829/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75830/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75831/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75832/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75833/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75834/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75835/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75836/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/75837/?format=api"
    ],
    "dataLineage": "Data were collected by the Met Office Meteorological Research Unit, Cardington, during its operational period. These data have been standardised for the production of this dataset, following similar file metadata conventions for all associated datasets within the continuous hydro-meteorological record (2004-2024) at the Met Office surface site of Cardington, UK Dataset Collection, as described more fully within Osborne et al., (2025). This standardisation approach addressed, where possible, any known data and metadata issues. Data were then deposited at the Centre for Environmental Data Analysis (CEDA) for long-term archival.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/13267/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/13330/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/20010/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/43597/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208293/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208294/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208295/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208296/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208297/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208298/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208292/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208303/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/208304/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/43695/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}