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/30013/?format=api

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

{
    "ob_id": 30013,
    "uuid": "47140d618dcc40309e1edbca7e773478",
    "title": "ESA Sea State Climate Change Initiative (Sea_State_cci) : Global remote sensing merged multi-mission monthly gridded significant wave height,  L4 product, version 1.1",
    "abstract": "The ESA Sea State Climate Change Initiative (CCI) project has produced global merged multi-sensor time-series of monthly gridded satellite altimeter significant wave height (referred to as Level 4 (L4) data) with a particular focus for use in climate studies.\r\n\r\nThis dataset contains the Version 1.1 Remote Sensing Sea Surface Height product, gridded over a global regular cylindrical projection (1°x1° resolution), averaging valid and good measurements from all available altimeters on a monthly basis (using the L2P products also available). These L4 products are meant for statistics and visualization.\r\n\r\nThis first version of the Sea State CCI products is inherited from the GlobWave project, building on experience and existing outputs. It extends and improves the GlobWave products ,which were a post-processing over existing L2 altimeter agency products with additional filtering, corrections and variables. A major improvement consists in a new denoised sea surface height variable using Empirical Mode Decomposition, which was used as input to these monthly statistical fields.\r\n\r\nThe altimeter data used in the Sea State CCI dataset v1.1 come from multiple satellite missions spanning from 1991 to 2018 (ERS-1, ERS-2, Topex, Envisat, GFO, CryoSat-2, Jason-1, Jason-2, Jason-3, SARAL). Many altimeters are bi-frequency (Ku-C or Ku-S) and only measurements in Ku band were used, for consistency reasons, being available on each altimeter but SARAL (Ka band).",
    "keywords": "Sea State, CCI, Significant Wave Height",
    "publicationState": "citable",
    "dataPublishedTime": "2020-01-30T16:47:40",
    "doiPublishedTime": "2020-01-30T17:35:20",
    "updateFrequency": "notPlanned",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/30012/?format=api",
        "dataPath": "/neodc/esacci/sea_state/data/v1.1_release/l4/v1.1/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 517839020,
        "numberOfFiles": 330,
        "fileFormat": "Data are in NetCDF format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8161/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2578/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/1050/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6019/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6020/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6021/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6022/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/12066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28342/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28343/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28344/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28346/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28347/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28348/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28349/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28350/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28351/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28352/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28353/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28354/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28355/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28356/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28357/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28358/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28359/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28360/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/28361/?format=api"
    ],
    "dataLineage": "Data was produced by the ESA Sea State CCI team at Ifremer and was transferred to CEDA as part of the ESA CCI Open Data Portal project.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10693/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/30004/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30025/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141376/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141377/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129684/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129685/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129682/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129680/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129687/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129679/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/129681/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2604/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_sea_state_terms_and_conditions.pdf",
            "licenceClassifications": ""
        }
    ],
    "discoveryKeywords": []
}