Get a list of Collections objects. Collections have a 1:1 mapping with Observations.

### Available end points:

- `/observationcollections/` - Will list all Collections in the database
- `/observationcollections.json` - Will return all Collections in json format
- `/observationcollections/<object_id>/` - Returns Collections object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `uuid`
- `title`
- `keywords`
- `discoveryKeywords`
- `publicationState`

### How to use filters:

- `/observationcollections/?uuid=ab4ca8d019d148f78afba1cd20872bdd`

- `/observationcollections.json?publicationState=citable`

GET /api/v2/observationcollections/2121/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 2121,
    "uuid": "0ce70613f8ec10214fc2176d55f34566",
    "title": "ARDAAOS: Middle atmospheric assimilated data from the Reading assimilated atmospheric satellite",
    "abstract": "The Reading Assimilated Atmospheric Satellite Data presents an analyses of stratospheric and tropospheric temperature, ozone and water vapour incorporating data from research satellites and operational observations, assimilated with the Hadley Centre Atmospheric Model (HADAM3) configuration of the Unified Model (UM). \r\n\r\nThis dataset includes 3-D global fields for selected periods of time in the 1990s and is produced as part of the Assimilation of Remote-sensed Data for Applications in the Atmospheric and Oceanographic Sciences (ARDAAOS) Natural Environment Research Council (NERC) thematic programme.",
    "keywords": "ARDAAOS, NERC, remote sensor",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2002-12-10T03:11:48",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/2122/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1497/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/1498/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9230/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9231/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9232/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9233/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9237/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41129/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41133/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/9229/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41130/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41132/?format=api"
    ]
}