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/32170/?format=api

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

{
    "ob_id": 32170,
    "uuid": "656204c257144708a641507c78187aaa",
    "title": "Filter pack and cascade impactor samples of gas and aerosol particulate matter on the Island of Hawai'i (2018, 2019)",
    "abstract": "This dataset reports chemical speciation of airborne gas and aerosol particulate matter (PM) sampled in various locations on the Island of Hawai'i in 2018 and 2019. The 2018 samples were collected during a large eruption of Kilauea volcano.  The 2019 samples were collected during a period of very low volcanic activity. \r\n\r\nSamples were collected in several locations on the Island of Hawai'i, Hawaii, USA. \r\n\r\nTime-series samples were collected at \r\n-Leilani Estates\r\n-Volcano village\r\n-Pahala, Ocean View \r\n-Kailua-Kona\r\n-Mauna Loa Observatory in 2018 and 2019. \r\n\r\nPoint-source samples were collected at the following locations \r\n-The main erupting vent 'Fissure 8' on the Kilauea Volcano in  2018, and repeated in its vicinity post-eruption in 2019\r\n- The lava ocean entry point in 2018 and repeated in its vicinity post-eruption in 2019. \r\n\r\nThe samples were collected using filter packs (FP) and Sioutas cascade impactors (SKC). The instruments were used at ground-level in all cases except for samples FP_08_1, FP_ 09_1, FP_09_2, SKC_08 and SKC_09 which were attached to an Unoccupied Aircraft System (UAS) in order to safely access the erupting vent and the lava ocean entry. \r\n\r\nThe samples were then analysed using inductively-coupled plasma mass spectroscopy (ICP-MS), inductively-coupled plasma optical emission spectroscopy (ICP-OES) and ion chromatography (IC).  Sample analysis was done at the University of Leeds, United Kingdom (2018 samples) and the University of Leeds and Open University, United Kingdom (2019 samples). The results are reported as concentration per volume of air sampled (µg/m^3) to 2 significant figures.  This was done to \r\n- assess the dispersion of major and trace elements in a volcanic plume, and quantify their depletion rates from the source into the far-field (up to ~240 km downwind)\r\n- assess the impact of volcanic emissions on the composition of the local atmosphere.\r\n\r\nThe data were produced as a result of a collaborative project between the Universities of Leeds, Cambridge, Oxford (UK), Hawaiian Volcano Observatory of the United States Geological Survey, and the University of Hawai'i at Manoa (USA).",
    "keywords": "Filter pack, cascade impactor, Volcanic, metal, particulate, Hawaii",
    "publicationState": "citable",
    "dataPublishedTime": "2021-02-17T17:39:31",
    "doiPublishedTime": "2021-02-19T15:02:55.973794",
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32171/?format=api",
        "dataPath": "/neodc/comet/data/volcano_fp_skc/hawaii/2018_2019/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 129808,
        "numberOfFiles": 2,
        "fileFormat": "BADC CSV: Full results are included Abbreviations used in the data file: dl: below detection limit NaN : not applicable/not analysed."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8820/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/2730/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69040/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69041/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69042/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69044/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69045/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69046/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69047/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69048/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69049/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69050/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69051/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69052/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69053/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69054/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69055/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69056/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69057/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69058/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69059/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69060/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69061/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69062/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69063/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69064/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69065/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69066/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69067/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69068/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69069/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69070/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69071/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69072/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69073/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69074/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69075/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69076/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69077/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69078/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69079/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69080/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69081/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69082/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69083/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69084/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69085/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69086/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69087/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69088/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69089/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69090/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69091/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69092/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69093/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69094/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69095/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69096/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69097/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69098/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69099/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69100/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69101/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69102/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69103/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69104/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69105/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69106/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69107/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69108/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69109/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69110/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69111/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69112/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69113/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69114/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69115/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69116/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69117/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69118/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69119/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69120/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69121/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69122/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69123/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69124/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69125/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69126/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69127/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/69128/?format=api"
    ],
    "dataLineage": "Data were produced by the project team and supplied for archiving at the Centre for Environmental Data Analysis (CEDA). Data were reformatted by CEDA and approved by Dr Evgenia Ilyinskaya of the University of Leeds",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10805/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/11687/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30127/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143044/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143042/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143043/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143045/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143046/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143051/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143052/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143041/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143053/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143054/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143055/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/143056/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/32172/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "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": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}