Get a list of Observation objects.

### Available end points:

- `/observations/` - Will list all Results in the database
- `/observations.json` - Will return all Results in json format. This can
also be achieved by using the accept header. `application/json`
- `/observations/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `status`
- `result_field`
- `discoveryKeywords`
- `updateFrequency`
- `nonGeographicFlag`
- `publicationState`
- `permissions`

### How to use filters:

These filters can be used like django query filters using __ for related model relationships.

- `/observations/?uuid=d594d53df2612bbd89c2e0e770b5c1a0`
- `/observations/?status=completed`
- `/observations/?results_field__dataPath__startswith=/neodc/esacci`
- `/observations/?discoveryKeywords__name=ESACCI`
- `/observations/?nonGeographicFlag=True`

Filters can be stacked to build an 'AND' relationship. E.g.

- `/observations/?publicationState__in=published,citable&nonGeographicFlag=True`
- `/observations/?publicationState__in=published,citable&discoveryKeyword__name=NDGO0003`

GET /api/v2/observations/32037/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 32037,
    "uuid": "5f4d2f6daebd4195a0368a79405d3686",
    "title": "Global model data generated for volcanic halogen simulations: United Kingdom Earth System Model 1.0 (UKESM1.0), Unified Model version 11.2, N96L85, 1990s timeslice.",
    "abstract": "This dataset contains global model data generated for volcanic halogen simulations. Model used was the United Kingdom Earth System Model 1.0 (UKESM1.0), in an atmosphere-only configuration, with Met Office Unified Model version 11.2. The data is on a global N96 grid (192 x 144 points), and is a mid 1990s timeslice. These data were used to study the impact of co-emission of volcanic halogens on atmospheric composition and radiative forcing.\r\n\r\nThere are 6 experimental integrations for sulfur only (u-bw537, u-bw539, u-bw541, u-bs104, u-bs110, u-bs112) and sulfur & halogens (u-bw538, u-bw540, u-bw542, u-bs109, u-bs111, u-bs113), and a control (u-bs034) for each year. The files are labeled using variable codes such as m01s34i001 to determine the model variable field contained. A full description of what these are can be found in the included file variable_codes.txt.\r\n\r\nThe datasets are in NetCDF format, and were generated from the above model suites.",
    "keywords": "UM, volcanic, halogen, sulfur",
    "publicationState": "preview",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32038/?format=api",
        "dataPath": "/badc/deposited2020/ukesm1_volcanic_halogen/data",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 668164633209,
        "numberOfFiles": 8023,
        "fileFormat": "Data are netCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8786/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19039/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/19043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21990/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22005/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30346/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30351/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30354/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30355/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30356/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30357/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30363/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/30373/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31656/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31657/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31658/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31659/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31660/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31661/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31664/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31666/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/50512/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51186/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/51187/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/53096/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54871/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54872/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54873/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54874/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54875/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54876/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54877/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54878/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54879/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54880/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54881/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54882/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/54883/?format=api"
    ],
    "dataLineage": "Simulations run on Met Office MONSooN2. Data extracted from MASS to JASMIN as PP files. Converted to Cf-compliant NetCDF format using Python 3.7.1. The data were then delivered to the Centre for Environmental Data Anaylsis (CEDA) for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [],
    "observationcollection_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141988/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141989/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141991/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141992/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141993/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141990/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141994/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141995/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141996/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141997/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141998/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141999/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/142000/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/4335/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2526/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}