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/43614/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 43614,
    "uuid": "b850297a4de4493b8ff048f574811e25",
    "title": "UM-CASIM Simulation Data for campaign cases from the DCMEX Project",
    "abstract": "This dataset contains output from the Unified Model - Cloud AeroSol Interacting Microphysics (UM-CASIM) model simulations of campaign case studies carried out as part of the Deep Convective Microphysics Experiment (DCMEX) project.\r\nThe simulation is designed to investigate cloud microphysics and convective processes under varying  atmospheric conditions. It includes 1.5km gridded data of cloud and radiative properties, along with a number of other variables of potential interest such as precipitation and lightning. It is intended to support both process-level studies and model validation efforts. \r\nSingle level data is provided in files with suffixes \"pa000\" (time-averages) and \"px\" (instantaneous). Pressure level data is provided in files with suffixes \"pw\". Model level data is provided files with suffixes \"pz\".\r\nThese simulations utilise data collected during the DCMEX measurement campaign in July and August 2022, New Mexico, USA. https://dx.doi.org/10.5285/B1211AD185E24B488D41DD98F957506C\r\nThis research has been supported by the Natural Environment Research Council (grant nos. NE/T006420/1). Paul Field (UK Met Office) supported the simulation setup and experiment design.",
    "keywords": "UM-CASIM,Cloud Modeling,DCMEX,Convection-permitting modelling,Microphysics",
    "publicationState": "published",
    "dataPublishedTime": "2025-03-14T15:07:59",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/43616/?format=api",
        "dataPath": "/badc/dcmex/data/DCMEX_UM_CASIM",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 3222360333423,
        "numberOfFiles": 21818,
        "fileFormat": "NetCDF"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/12143/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/4706/?format=api",
    "nonGeographicFlag": false,
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    ],
    "dataLineage": "Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/38131/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
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    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/43612/?format=api",
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        {
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            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
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            "label": "public: None group",
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            "licenceClassifications": "any"
        }
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    "discoveryKeywords": []
}