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/27425/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 27425,
    "uuid": "e82a62d926d7448696a2b60c1925f811",
    "title": "CMIP6 HighResMIP: Tropical storm tracks",
    "abstract": "This collection of datasets hold the tropical storm tracks derived from the Coupled Model Intercomparison Project Phase 6 (CMIP6) HighResMIP model simulations obtained from the Earth System Grid Federation (ESGF). Different storm tracking algorithms are used to identify the storm tracks including TRACK (Hodges, K., et. al., 2017) and TempestExtremes (Ullrich and Zarzycki,  2017; Zarzycki and Ullrich, 2017).",
    "keywords": "CMIP6, HighResMIP, storm, tracking, tropical, cyclone, hurricane, typhoon",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2019-07-23T10:59:49",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27427/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27580/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114644/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114645/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114646/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114647/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114648/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114650/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114651/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114652/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114649/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/168773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/114653/?format=api"
    ]
}