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/25930/?format=api

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

{
    "ob_id": 25930,
    "uuid": "56f81895cb094bd8a1638aa12d6c7499",
    "title": "ESA Greenhouse Gases Climate Change Initiative (GHG_cci): Column-averaged CH4 from GOSAT generated with the OCFP (UoL-FP) algorithm (CH4_GOS_OCFP), version 2.1",
    "abstract": "The CH4_GOS_OCFP dataset is comprised of level 2, column-averaged dry-air mole fractions (mixing ratios) of methane (XCH4). It has been produced using data acquired from the Thermal and Near Infrared Sensor for Carbon Observations (TANSO-FTS) NIR and SWIR spectra, onboard the Japanese Greenhouse gases Observing Satellite (GOSAT), using the University of Leicester Full-Physics Retrieval Algorithm.   It has been generated as part of the European Space Agency (ESA) Greenhouse Gases Climate Change Initiative (GHG_cci) project.  This version is version 2.1 and forms part of the Climate Research Data Package 4.\r\n\r\nThe University of Leicester Full-Physics Retrieval Algorithm is based on the original Orbiting Carbon Observatory (OCO) Full Physics Retrieval Algorithm and has been modified for use on GOSAT spectra. A second GOSAT CH4 product, generated using the SRFP algorithm, is also available.\r\n\r\nThe XCH4 product is stored in NetCDF format with all GOSAT soundings on a single day stored in one file. For further information, including details of the OCFP algorithm and the TANSO-FTS instrument, please see the associated product user guide (PUG).",
    "keywords": "ESA, GHG, CCI, CH4",
    "publicationState": "published",
    "dataPublishedTime": "2018-03-19T21:28:51",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/25931/?format=api",
        "dataPath": "/neodc/esacci/ghg/data/crdp_4/GOSAT/CH4_GOS_OCFP/v2.1/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 2064352355,
        "numberOfFiles": 2389,
        "fileFormat": "Data are in NetCDF format"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/7000/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50543/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/63576/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66452/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66456/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68622/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68623/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68624/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68625/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68626/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68630/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68635/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68636/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68637/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68638/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68639/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68640/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68641/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68642/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68643/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68644/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/68645/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69372/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69373/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69374/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69375/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/92256/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI GHG project team and supplied to CEDA as part 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/13295/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/12808/?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/108394/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108387/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108393/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108392/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108389/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108395/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108390/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/108391/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2564/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_ghg_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        },
        {
            "ob_id": 1140,
            "name": "ESACCI"
        }
    ]
}