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/13337/?format=api

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

{
    "ob_id": 13337,
    "uuid": "47e646778ba44138846306789e3a3054",
    "title": "ESA Ocean Colour Climate Change Initiative (Ocean Colour CCI): Monthly global ocean colour data products gridded on a geographic projection (All Products), Version 1.0",
    "abstract": "The ESA Ocean Colour CCI project has produced global level 3 binned multi-sensor time-series of satellite ocean-colour data with a particular focus for use in climate studies.\r\n\r\nThis dataset contains all their Version 1.0 generated ocean colour products on a geographic projection at 4 km spatial resolution and at a monthly time resolution.\r\n\r\nData products being produced include: phytoplankton chlorophyll-a concentration; remote-sensing reflectance at six wavelengths; total absorption and backscattering coefficients; phytoplankton absorption coefficient and absorption coefficients for dissolved and detrital material; and the diffuse attenuation coefficient for downwelling irradiance for light of wavelength 490nm. Information on uncertainties is also provided.\r\n\r\nThis data product is on a geographic grid projection, which is a direct conversion of latitude and longitude coordinates to a rectangular grid, typically a fixed multiplier of 360x180. The netCDF files follow the CF convention for this projection with a resolution of 8640x4320.   (A separate dataset is also available for data on a sinusoidal projection.)",
    "keywords": "ESA, CCI, Geographic, Daily",
    "publicationState": "published",
    "dataPublishedTime": "2015-12-07T08:10:24",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/13338/?format=api",
        "dataPath": "/neodc/esacci/ocean_colour/data/v1-release/geographic/netcdf/all_products/monthly/v1.0",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 774654067860,
        "numberOfFiles": 181,
        "fileFormat": "The data is in netCDF format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3611/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "This data has been produced by the ESA Ocean Colour CCI project and provided to CEDA in the context of the ESA CCI Open Data Portal project",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/13365/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/13548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/13330/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30128/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/104850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50966/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50967/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/50968/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/52469/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76544/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51768/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105243/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105056/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76596/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76622/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76648/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/76674/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/78052/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/78078/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/78104/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/78130/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/78156/?format=api",
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    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2538/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_oc_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}