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/31948/?format=api

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

{
    "ob_id": 31948,
    "uuid": "ffc9ed384aea471dab35901cf62f70be",
    "title": "NCAS mobile X-band radar scan data from 1st November 2016 to 4th June 2018 deployed on long-term observations at the Chilbolton Facility for Atmospheric and Radio Research (CFARR), Hampshire, UK",
    "abstract": "This dataset contains scan data from the National Centre for Atmospheric Science Atmospheric Measuring Facility's mobile X-band radar between 1st November 2016 to 4th June 2018 at Chilbolton Facility for Atmospheric and Radio Research (CFARR), UK,  as part of ongoing long-term observations made by the NERC National Centre for Atmospheric Science (NCAS).   The radar transmits pulses of electromagnetic radiation and measures the amount of energy backscattered to the receiver from which the location and intensity of precipitation, radial winds and polarisation parameters can be calculated.  \r\n\r\nParameters available in these data files include:\r\ndBZ - equivalent reflectivity factor;\r\nV - radial velocity;\r\nW - spectral width;\r\nZDR - differential reflectivity;\r\nKDP - specific differential phase shift;\r\nPhiDP - differential phase shift;\r\nRhoHV - co-polar cross correlation coefficient;\r\nSQI - signal quality index or normalized_coherent_power.\r\nA complete list of all available parameters is available on the CEDA data catalogue record for this dataset.\r\n\r\nThe sur files contain a volume of scans at different elevation angles between 0 and 90 degrees, approximately every 5-6 minutes. \r\nThe rhi files contain a single cross-section scan at a given azimuth and an elevation range of 0 to 180 degrees, every 5-6 minutes.\r\n\r\nThe data are available as netCDF files to all registered CEDA users under the Open Government License.",
    "keywords": "NCAS, AMF,  AMOF, CAO, radar, precipitation, rainfall, dual-polarisation, hydrometeorology",
    "publicationState": "citable",
    "dataPublishedTime": "2020-10-14T09:36:35",
    "doiPublishedTime": "2020-10-14T10:58:22",
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/42760/?format=api",
        "dataPath": "/badc/ncas-longterm-obs/data/ncas-mobile-xband-radar/20161101-20180604",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 6080573374301,
        "numberOfFiles": 402032,
        "fileFormat": "Data are netCDF formatted."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8754/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/59/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2007/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/2008/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10520/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10521/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10522/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10523/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10524/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10525/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10527/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10528/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10529/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10530/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10531/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10532/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10533/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10534/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10535/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10536/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10537/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10538/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10539/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10540/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10541/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10543/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10544/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10545/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10546/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10549/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10555/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10566/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10570/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10572/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10575/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10576/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10577/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10578/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10579/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10580/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10581/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10582/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10583/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10584/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10585/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10586/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10587/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10588/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10589/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10590/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10591/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10594/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10595/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10598/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10599/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10600/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10602/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10608/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10609/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10610/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10611/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10612/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10613/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/10614/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21038/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31177/?format=api",
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        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31179/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31180/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31181/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31182/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31183/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31184/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31185/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31186/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31187/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31188/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31189/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31190/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31191/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31192/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/31193/?format=api"
    ],
    "dataLineage": "Data were collected by the xband radar before being processed by the instrument scientist and then provided to the CEDA for archiving.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10764/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/31951/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/5404/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/29923/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141252/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141249/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141251/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141256/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141250/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141255/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141254/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141253/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/141351/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/31950/?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"
        }
    ]
}