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/41252/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 41252,
    "uuid": "854cc98dbc634cdb8afa8835994428f5",
    "title": "ESA High Resolution Land Cover Climate Change Initiative (High_Resolution_Land_Cover_cci): High Resolution Land Cover and Land Cover Change Maps in Siberia (Norther Siberia region) at 30m spatial resolution in GeoTiff format, 1990-2019, v1.2",
    "abstract": "This dataset contains high resolution (HR) land cover (LC) and land cover change (LCC) maps of a subregion of Siberia, produced by the ESA High Resolution Land Cover (HRLC) Climate Change Initiative (CCI) project.  It consists of the following products:\r\n\r\n1) HRLC30:  High Resolution Land Cover Maps at 30m spatial resolution for years 1990, 1995, 2000, 2005, 2010, 2015, 2019.\r\n\r\n2) HRLCC30: High Resolution Land Cover Change Maps at 30m spatial resolution of yearly changes. A map every 5 years (1990-1995, 1995-2000, 2000-2005, 2005-2010, 2010-2015,2015-2019) is provided which reports (high priority) changed pixels and their year within the 5-years temporal interval.\r\n\r\n3) Associated uncertainty products\r\n\r\nThey cover the geographic range (59.4°N – 73.9°N, 64.8°E – 87.4°E).\r\n\r\nThe data are provided as both GeoTIFF tiles following the Sentinel 2 MGRS tiling scheme and as a GeoTiff format mosaic.    These maps are also referred to as historical maps.",
    "keywords": "Land Cover, CCI, High Resolution",
    "publicationState": "citable",
    "dataPublishedTime": "2024-02-13T18:37:24",
    "doiPublishedTime": "2024-02-14T17:53:40",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/41359/?format=api",
        "dataPath": "/neodc/esacci/high_resolution_land_cover/data/land_cover_maps/A03_Siberia/historical/v1.2/geotiff/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 87284579146,
        "numberOfFiles": 7319,
        "fileFormat": "Data are in GeoTiff format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11012/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/4076/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data were processed by the ESA CCI High Resolution Land Cover project and catalogued here as part of the CCI Open Data Portal Project",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12824/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/39805/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200793/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200796/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200798/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/200799/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201792/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201793/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201794/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201795/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201796/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201798/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201799/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201800/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201801/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201802/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201803/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201804/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201805/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/201806/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/41376/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2572/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_high_resolution_land_cover_terms_and_conditions.pdf",
            "licenceClassifications": ""
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1140,
            "name": "ESACCI"
        }
    ]
}