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/27633/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 27633,
    "uuid": "f6f424ff804b434685e2913e5bd2f3b0",
    "title": "FIDUCEO: Collection of Climate data records from Earth Observations Satellites from the FIDUCEO (Fidelity and uncertainty in climate data records from Earth Observations) project",
    "abstract": "The Fidelity and Uncertainty in Climate data records from Earth Observations consists of new climate datasets from Earth Observation Satellites which have received rigorous treatment of uncertainty informed by the discipline of metrology. The collection datasets  include Fundamental Climate Data Records (FCDRs) containing harmonised radiances and [Thematic] Climate Data Records (CDRs) for ensemble sea and lake surface temperature, tropospheric humidity, aerosol optical depth and surface albedo  that are widely applicable and metrologically rigorous.\r\n\r\nThe archived  FCDRs have a length relevant to climate (>20 years) and can support numerous CDRs. The selected CDRs illustrate new capabilities (e.g. equi-probable ensembles) as well as the benefiting from use of the new FCDRs, resulting in improved stability and traceable uncertainties. Specifically, the data collection contains: harmonised radiances (FCDRs) for the following sensors: Advanced Very High Resolution Radiometer (AVHRR), High Resolution Infrared Radiation Sounder (HIRS),  Advanced Microwave Sounding Unit-B (AMSU-B), Microwave Humidy Sounder (MHS) and Meteosat Visible Infra-Red Imager (MVIR); and geophysical datasets with uncertainties.",
    "keywords": "FIDUCEO, H2020, Uncertainty, Earth Observation, Instrument calibration, climate data records, metrology, MVIIRI, AVHRR, HIRS, AMSU-B, MHS,  sea surface temperature, lake surface temperature, tropospheric humidity, aerosol optical depth, surface albedo",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2019-08-21T11:09:23",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26981/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/26982/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27599/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27600/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27601/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27602/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27603/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27604/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27605/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27606/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27607/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115493/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115490/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115488/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115492/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115491/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115495/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115489/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115498/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/132769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/115497/?format=api"
    ]
}