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/43667/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 43667,
    "uuid": "a70dedb97d604856a810f2ef9801a883",
    "title": "EOCIS: CHUK Coastal Zone Water Colour (MSI) V1.0",
    "abstract": "This dataset contains gridded coastal zone water colour data for the local region around the United Kingdom with a spatial resolution of 100m, derived from the Multispectral Insturment (MSI) on the Sentinel 2A and 2B satellites.   These data allow monitoring of coastal waters in finer detail and observations in estuaries, bays and lagoons.   It was produced within the Earth Observation Climate Inforemation Service (EOCIS) project as one of their high resolution UK (CHUK) datasets.\r\n\r\n\r\nData are provided on the British National Grid, and 3 products are available: a netCDF product which  containing all derived variables; and additionally  two geotiff products containing chlorophyll-a concentration and Total Suspended Matter (TSM) respectively.",
    "keywords": "CHUK, Coastal, Water Colour, Sentinel, estuaries, bays, lagoons, optical, chlorophyll, TSM, Reflectance, MSI, Optical Water Type",
    "publicationState": "preview",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "pending",
    "result_field": {
        "ob_id": "https://catalogue.ceda.ac.uk/api/v2/observations/45898/?format=api",
        "dataPath": "/neodc/eocis/data/CHUK/coastal_zone_watercolour/msi_100m/v1.0/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 594671255684,
        "numberOfFiles": 4543,
        "fileFormat": "Data are in NetCDF and GeoTiff format"
    },
    "timePeriod": "https://catalogue.ceda.ac.uk/api/v2/times/12176/?format=api",
    "geographicExtent": "https://catalogue.ceda.ac.uk/api/v2/bboxes/4720/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/52664/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/52665/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/63576/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/74919/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/74920/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/74921/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/74922/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/80424/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/80430/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/87023/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/87024/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93316/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93317/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93318/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93319/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93320/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93321/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93322/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/phenomona/93323/?format=api"
    ],
    "dataLineage": "This dataset was produced by Plymouth Marine Laboratory in the context of the Earth Observation Climate Information Service project.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://catalogue.ceda.ac.uk/api/v2/projects/43216/?format=api"
    ],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208978/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208979/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208980/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208981/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208982/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208983/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208984/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/215225/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/208985/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/217129/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/217130/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://catalogue.ceda.ac.uk/api/v2/composites/45894/?format=api",
    "procedureComputation": null,
    "permissions": [],
    "discoveryKeywords": []
}