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/40038/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 40038,
    "uuid": "d441079fc77f49fabeb41330612b252f",
    "title": "ESA Fire Climate Change Initiative (Fire_cci): Sentinel-3 SYN Burned Area Pixel product, version 1.1",
    "abstract": "The ESA Fire Disturbance Climate Change Initiative (CCI) project has produced maps of global burned area derived from satellite observations. The Sentinel-3 SYN Fire_cci v1.1 pixel product is distributed as 6 continental tiles and is based upon surface reflectance data from the OLCI and SLSTR instruments (combined as the Synergy (SYN) product) onboard the Sentinel-3 A&B satellites. This information is complemented by VIIRS thermal information. This product, called FireCCIS311 for short, is available for the years 2019 to 2024.\r\n\r\nThe FireCCIS311 Pixel product described here includes maps at 0.002777-degree (approx. 300m) resolution. Burned area (BA) information includes 3 individual files, packed in a compressed tar.gz file: date of BA detection (labelled JD), the confidence level (CL, a probability value estimating the confidence that a pixel is actually burned), and the land cover (LC) information as defined in the Copernicus Climate Change Service (C3S) Land Cover v2.1.1 product. An unpacked version of the data is also available. For further information on the product and its format see the Product User Guide in the linked documentation.",
    "keywords": "ESA, CCI, Pixel, Burned Area, Fire Disturbance, Climate Change, GCOS",
    "publicationState": "citable",
    "dataPublishedTime": "2024-02-28T15:27:52",
    "doiPublishedTime": "2024-02-29T11:52:43",
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/41454/?format=api",
        "dataPath": "/neodc/esacci/fire/data/burned_area/Sentinel3_SYN/pixel/v1.1",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 80639207048,
        "numberOfFiles": 2234,
        "fileFormat": "The data are in GeoTiff format."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11557/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data was produced by the ESA Fire CCI team as part of the ESA Climate Change Initiative (CCI) and is being held on the CEDA (Centre for Environmental Data Analysis) archive as part of the ESA CCI Open Data Portal.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12833/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12834/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/13255/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/12683/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195126/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195128/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195129/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195130/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195131/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195132/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195133/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195127/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195134/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195135/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195136/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195137/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195138/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/195139/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/41451/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2539/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_fire_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1140,
            "name": "ESACCI"
        }
    ]
}