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/41413/?format=api

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

{
    "ob_id": 41413,
    "uuid": "e74491c96ef24df29a9342a3d57b5939",
    "title": "ACSIS: Sunphotometer aerosol measurements at Plymouth Marine Laboratory - Version 1. 2001-2023",
    "abstract": "Measurements of spectral aerosol optical thickness (tau), single scattering albedo (SSA), refractive index (RI), and size distribution of aerosols for preset aerosol diameters (um - microns) made using sunphotometers between June 2001 - December 2023 located on the roof of Plymouth Marine Laboratory (PML), Devon, UK, for the Western Channel Observatory (https://www.westernchannelobservatory.org.uk) and The North Atlantic Climate System Integrated Study (ACSIS).  \r\n\r\nThis version 1 dataset contains measurements for 2001 to 2023. Two Kipp and Zonen (UK) PREDE POM01-L sunphotometers were used: June 2001 - March 2008 (Unknown serial number) and August 2009 - December 2023 (Serial  Number PS08015). \r\n\r\nThe instruments operated at 7 wavelengths (315, 400, 500, 670, 870, 940 and 1020nm) and scanned at pre-set angles away from the solar disk to determine, using the inversion code of Nakajima et al. (1996), various optical properties of tiny particles called aerosols within the atmospheric column.",
    "keywords": "ACSIS, aerosol, PML, photometer",
    "publicationState": "citable",
    "dataPublishedTime": "2024-01-30T08:03:21",
    "doiPublishedTime": "2024-01-31T14:19:35.067207",
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/41411/?format=api",
        "dataPath": "/badc/acsis/pml-sunphotometer/data/v1",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 63129401,
        "numberOfFiles": 4,
        "fileFormat": "BADC-CSV, txt"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11526/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/4126/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "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": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12807/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/24717/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/24737/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201710/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201711/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201712/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201713/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201714/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201716/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201726/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/41412/?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": []
}