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/5679/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 5679,
    "uuid": "a6ca5bc1b36d1b1a83cba4e4ac4b0bac",
    "title": "Polar Pathfinder Sampler (PPSM): Combined Time Series of Atmospheric and Surface Measurements from the AVHRR, SMMR-SSM/I and TOVS Satellites",
    "abstract": "To address the needs of the cryospheric science community, the SMMR-SSM/I, AVHRR and TOVS research teams collaborated to make it as easy as possible for the Polar Pathfinders and related data sets to be used together. The teams employed a common projection, the NSIDC Equal-Area Scalable Earth-Grid (EASE-Grid), file naming conventions and validation methods to develop consistently processed data sets that are easy to combine and contrast.\r\n\r\nThe Polar Pathfinder Sampler CD-ROM is an innovative assemblage of atmospheric and surface measurements from all three Pathfinders. Included is a two-year period of daily merged Pathfinder data sets at 100 km-resolution, placed in a multidimensional structure known as the \"P-Cube.\" In addition, samples of full-resolution Special Sensor Microwave Imager(SSM/I), TIROS Operational Vertical Sounder (TOVS) and  Advanced Very High Resolution Radiometer (AVHRR) (both the 1.25 km and 5 km products) Polar Pathfinder data sets are included, also in Equal-Area Scalable Earth-Grid (EASE-Grid), making it easy to compare parameters at multiple resolutions. The new product provides data for a wide range of polar climate research applications, but is especially keyed to the needs of investigators dealing with large-scale atmospheric changes, surface heat and mass balance studies, and sea ice modelling. This dataset is public",
    "keywords": "PPSM, time-series, atmospheric, surface, meteorology, cryosphere",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "1999-12-10T02:25:17",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5680/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5690/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5694/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/13296/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3730/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10413/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12901/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/24521/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43202/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/24526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/24520/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/24522/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/24523/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/24524/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43186/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/51858/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/54981/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43187/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43188/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43189/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43190/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43191/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43192/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43193/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43194/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43195/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43196/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43197/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43198/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43199/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43201/?format=api"
    ]
}