Observation Instance – Django REST framework

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/3580/?format=api

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3580,
    "uuid": "23c9314a7bad7f66f8217067f3358cb4",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) Leosphere EZ Polarization Lidar Data",
    "abstract": "Data were collected from the 14th of February 2009 to the present by the Leosphere EZ polarization lidar at Chilbolton Observatory, Hampshire. The dataset contains plots of the attenuated backscatter coefficient at different heights, and of the depolarization ratio of particles.\r\n\r\nThe dataset contains:\r\n\r\nPlots of the attenuated backscatter coefficient at different heights, and of the depolarization ratio of particles.\r\nAtmospheric backscatter light intensity (raw data)\r\nSolid angle and background calibrated data\r\nVertical backscatter and extinction profile\r\nVertical Aerosol profile\r\nPlanetary Boundary Layer and residual layer heights\r\nSemi-transparent cloud height and top\r\nOptical depth integrated over whole Lidar range\r\nDynamic structure of the atmosphere (e.g gravity waves...)\r\nAsphericity information on the particle in order to discriminate some particles from others (soil dust from other aerosol, ice/water phase of the clouds…)",
    "keywords": "CFARR, lidar, polarisation",
    "publicationState": "published",
    "dataPublishedTime": "2003-09-14T08:50:21",
    "doiPublishedTime": null,
    "updateFrequency": "continual",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/3581/?format=api",
        "dataPath": "/badc/chilbolton/data/lidar-leosphere",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 24403484727,
        "numberOfFiles": 2909,
        "fileFormat": "Data are netCDF formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/1016/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/63/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/13200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21824/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21919/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21962/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22450/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22454/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22455/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22456/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22457/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22459/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22460/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25384/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25393/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25402/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25855/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25911/?format=api"
    ],
    "dataLineage": "Data are collected by 4 radar systems, of which the largest is the 3 GHz Doppler radar (CAMRa), and 4 lidar systems, at Chilbolton Observatory, Hampshire.\r\nData are prepared by Chilbolton Facility for Atmospheric and Radio Research (CFARR) staff prior to submission to BADC for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2431/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/3569/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/3461/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/4611/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/7378/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15130/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15131/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15132/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15133/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15135/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/15129/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41540/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/41541/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/3583/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2522/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "registered",
            "accessRoles": null,
            "label": "registered: None group",
            "licenceURL": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}