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/28799/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 28799,
    "uuid": "e9ccd46c774c49bf8917fc645f64a98b",
    "title": "WCRP CMIP6: NASA Goddard Institute for Space Studies (NASA GISS) GISS-E2-1-G-CC model output collection",
    "abstract": "World Climate Research Programme (WCRP) Coupled Model Intercomparison Project Phase 6 (CMIP6): Collection of simulations from the NASA Goddard Institute for Space Studies (NASA GISS) GISS-E2-1-G-CC model.\n\nThe official CMIP6 Citation, and its associated DOI, is provided as an online resource linked to this record.",
    "keywords": "CMIP6, WCRP, climate change, NASA-GISS, GISS-E2-1-G-CC",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/28797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/30825/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/33889/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44395/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/44400/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122677/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122678/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122679/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122680/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122681/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122684/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122685/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/122682/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/165501/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/165502/?format=api"
    ]
}