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/40887/?format=api

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

{
    "ob_id": 40887,
    "uuid": "1516421bd92a4a2fa5061d3a98cf75c9",
    "title": "HadCM3 Climate Simulation - Anthropogenic Forcing ensemble (Historical / SRESB2)",
    "abstract": "The model simulation contained in this dataset is the all-anthropogenic forcings ensemble with greenhouse gas forcing (multiple species of greenhouse gases including various minor species specified to give SRESB2-like forcing variations); sulphate aerosol direct and indirect forcing (via calibrated delta-albedo); sulfur chemistry without natural DMS and 3D SO2 background emissions, (ie. anthropogenic SO2 emissions surface and high level only); and tropospheric/stratospheric ozone.\r\n \r\n This experiment produced model outputs reflecting the IPCC Special Report Emission Scenario B2 (SRES-B2). The HadCM3 model was used by the Hadley Centre to provide input for the IPCC Third Assessment Report.\r\n \r\n Data members run for this experiment: ['aaxzx', 'aaxzl', 'aaxzz', 'abiaa', 'abqza', 'abqzd', 'abiab', 'abqzb', 'abqze', 'abiac', 'abqzc', 'abqzf']\r\n\r\n Boundary conditions: All anthropogenic forcing from multiple species of greenhouse gases as defined for the IPCC SRESB2 emissions scenario; sulfur (direct and indirect forcing, sulphur chemistry without natural DMS and SO2 background emissions (i.e. anthropogenic SO2 emissions from surface and high level only) and tropospheric/stratospheric ozone.\r\nReferences: \r\nJohns, T.C., J.M. Gregory, W.J. Ingram, C.E. Johnson, A. Jones, J.A. Lowe, J.F.B. Mitchell, D.L. Roberts, D.M.H Sexton, D.S Stevenson, S.F.B. Tett, M.J. Woodage (2003) Anthropogenic climate change for 1860 to 2100 simulated with the HadCM3 model under updated emissions scenarios. Climate Dynamics, 20, 583-612.\r\n\r\n Initial conditions: Initialisation for the ensemble was achieved using dump files from previous model runs as follows:\r\n ELEMENT 1: [ run aaxzl - initialised from year 370 of the HadCM3 control run. (i.e. 2361); run aaxzx - initialised from run aaxzl 1849-12-01 ; run aaxzz - initialised from aaxzx 1969-12-01;]\r\n ELEMENT 2: [run abiaa - initialised from run aaxzk 1959-12-01; run abqza - initialised from run abiaa 1959-12-01 ; run abqzd - initialised from run abqza 1974-12-01 ]\r\n ELEMENT 3: [run abiab - initialised from run aaxzk 2059-12-01; run abqzb - initialised from run abiab 1959-12-01 ; run abqze - initialise from run abqzb 1974-12-01 ]\r\n ELEMENT 4: [run abiac - initialised from run aaxzk 2159-12-01; run abqzc - initialised from run abiac 1959-12-01 ; run abqzf - initialised from run abqzc 1974-12-01]\r\n\r\n More detailed metadata on the model configuration and parameters is available in XML format.",
    "keywords": "HadCM3-AFHB2, HadCM3, Historical, SRESB2",
    "publicationState": "published",
    "dataPublishedTime": "2024-04-16T08:16:07",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/40888/?format=api",
        "dataPath": "/badc/hadcm3/data/HadCM3_AFHB2/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 496650807198,
        "numberOfFiles": 30842,
        "fileFormat": "HadCM3 data is provided in PP (post processing) format."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11357/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/3997/?format=api",
    "nonGeographicFlag": false,
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    ],
    "dataLineage": "Data from the UK Met Office Hadley Centre. Dataset directory structure was reordered by CEDA staff in November 2023 to place experiment runs within a directory of their associated experiment.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/13847/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3791/?format=api"
    ],
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    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/40889/?format=api",
    "permissions": [
        {
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            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "restricted",
            "accessRoles": "link",
            "label": "restricted: link group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement.pdf",
            "licenceClassifications": "academic"
        }
    ],
    "discoveryKeywords": []
}