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/927/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 927,
    "uuid": "44beda2983d4b3522d33ce1aaf794151",
    "title": "Stratospheric Photochemistry, Aerosols and Dynamics Expedition (SPADE): Airborne Measurements of Meteorological Parameters, Atmospheric Composition and Aerosols",
    "abstract": "This dataset collection contains data from the Stratospheric Photochemistry, Aerosols and Dynamics Expedition (SPADE) which was based at NASA Ames Research Center in California during portions of 1992 and 1993.\r\n\r\nThe data consist of measurements collected onboard the NASA ER-2 aircraft, and selected radiosonde soundings from stations in the region of the experiment. Flights were conducted during October and November of 1992, April and May of 1993, and October of 1993.\r\n\r\nTheory team products come in two forms: as quantities evaluated along flight tracks and as global or hemispheric fields. Meteorological quantities, such as temperature, geopotential, and potential vorticity are available in both forms. They are based on analyses from both the U.S. National Meteorological Center and from the Assimilation Model of NASA's Goddard Space Flight Center. Other quantities, available along flight tracks only, include visible reflectivity, cloud height, UV reflectivity, and total ozone. The first two are derived from GOES imagery, the last two from the Meteor TOMS sensor. Finally, calculations of mixing ratios of selected chemical species using a photochemical steady state model are available along the flight track.",
    "keywords": "SPADE, Meteorology, Aerosols, Atmospheric Composition, Aircraft, stratosphere, photochemistry, dynamics",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "1994-12-10T02:27:55",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/991/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/13879/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/13882/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/649/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/650/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10453/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12897/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12898/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3001/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3002/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3003/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3004/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3007/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41907/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41910/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3000/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41908/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41909/?format=api"
    ]
}