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/25109/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 25109,
    "uuid": "55b5d76a7edb42e39933c1edc37f7b90",
    "title": "ICE-D: NCAS mobile X-band radar scan data from the Praia International Airport, Santiago, Cape Verde, Version 1",
    "abstract": "This dataset contains scan data from the National Centre for Atmospheric Science's (NCAS) mobile X-band radar collected at Praia International Airport, Santiago, Cape Verde between July and August 2015 as part of the Ice in Clouds Experiment - Dust (ICE-D). The radar has Doppler and dual-polarisation capability and measures the location and intensity of precipitation, radial winds and polarisation parameters.\r\n\r\nThe X-band radar is operated as part of the NCAS Atmospheric Measurement Facility (AMF).",
    "keywords": "ICE-D, radar, clouds, microphysics, ice, rainfall, dust, convection, storms",
    "publicationState": "citable",
    "dataPublishedTime": "2018-01-08T13:13:23",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/25110/?format=api",
        "dataPath": "/badc/ice-d/data/ncas-mobile-xband-radar/version-1/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 312053485190,
        "numberOfFiles": 13342,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/6795/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1875/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10621/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59110/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59111/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59112/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59113/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59114/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59115/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59116/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59117/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59118/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59119/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59120/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59121/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59122/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59123/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59124/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59125/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59126/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59127/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59128/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59129/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59130/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59131/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59132/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59133/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59134/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59135/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59136/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59137/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59138/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59139/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59140/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59141/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59142/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59143/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59144/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59145/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59146/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59147/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59148/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59149/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59150/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59151/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59152/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59153/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59154/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59155/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59156/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59157/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59158/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59159/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59160/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59161/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59162/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59163/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59164/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59165/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59166/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59167/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59168/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59169/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59170/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59171/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59172/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59173/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59174/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59175/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59176/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59177/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59178/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59179/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59180/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59181/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59182/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59183/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59184/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59185/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59186/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59187/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59188/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59189/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59190/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59191/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59192/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59193/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59194/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59195/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59196/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59197/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59198/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59199/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59201/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59202/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59203/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59204/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59212/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59223/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59224/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/59228/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60930/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60931/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60932/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60933/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60934/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60935/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60936/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60937/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/60938/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69325/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69326/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69327/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69328/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69329/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69330/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69331/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69332/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69333/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69334/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69335/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69336/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69337/?format=api"
    ],
    "dataLineage": "Data were collected by the NCAS instrument scientist before preparation for archiving and delivery to Centre for Environmental Data Analysis.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/9781/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12454/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/13034/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102914/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102912/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102913/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102915/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102916/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102917/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102918/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102911/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102919/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/25433/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}