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/3826/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3826,
    "uuid": "c46248046f6ce34fc7660a36d9b10a71",
    "title": "ECMWF operational analysis: Assimilated Data",
    "abstract": "Global analyses from the European Centre for Medium-Range Weather Forecasts (ECMWF) from 1994 - present. This dataset collection follows on from the ECMWF Re-Analysis (ERA-15 and ERA-40) datasets with the same parameters at identical resolutions. Data is available in a number of resolutions and vertical level types. Some Monthly means and Seasonal Forecast data (1987-present) are also available.",
    "keywords": "ECMWF Operational Analyses, forecast, weather",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2006-12-10T02:34:08",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3827/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3830/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3832/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3834/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3836/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3838/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3840/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10316/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12867/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18950/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18954/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43646/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43647/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18952/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18953/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18956/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18951/?format=api"
    ]
}