GET

Observation Instance

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/991/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 991,
    "uuid": "e91fbe126e70b45849d94e58cc389ea7",
    "title": "Stratospheric Photochemistry, Aerosols and Dynamics Expedition (SPADE): NASA ER-2 aircraft measurements",
    "abstract": "The Stratospheric Photochemistry, Aerosols and Dynamics Expedition (SPADE) was based at the NASA Ames Research Centre in California during portions of 1992 and 1993. This dataset contains measurements of meteorological parameters, atmospheric composition, aerosol and cloud plus GOES imagery and TOMS column ozone.\r\n\r\nThe overall data collection consist of measurements collected onboard the NASA ER-2 aircraft, and selected radiosonde soundings from stations in the region of the experiment. Flights were conducted during October and November of 1992, April and May of 1993, and October of 1993.\r\n\r\nTheory team products come in two forms: as quantities evaluated along flight tracks and as global or hemispheric fields. Meteorological quantities, such as temperature, geopotential, and potential vorticity are available in both forms. They are based on analyses from both the U.S. National Meteorological Center and from the Assimilation Model of NASA's Goddard Space Flight Center. Other quantities, available along flight tracks only, include visible reflectivity, cloud height, UV reflectivity, and total ozone. The first two are derived from GOES imagery, the last two from the Meteor TOMS sensor. Finally, calculations of mixing ratios of selected chemical species using a photochemical steady state model are available along the flight track.",
    "keywords": "SPADE, Aircraft, Meteorology, Chemistry, Aerosols, stratosphere, photochemistry, dynamics",
    "publicationState": "published",
    "dataPublishedTime": "2007-02-06T17:10:53",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/992/?format=api",
        "dataPath": "/badc/CDs/spade9293/data/er2",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 72770775,
        "numberOfFiles": 332,
        "fileFormat": "Data are NASA Ames formatted"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/266/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/1/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21778/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21779/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21817/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/21823/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22320/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22321/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22341/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22390/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22444/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22445/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/22890/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/23106/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/23127/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/23128/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/23131/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/23132/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24486/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/24487/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25381/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25383/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25385/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25386/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25388/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25390/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25391/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25392/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25393/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25394/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25396/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25398/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25399/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25400/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25404/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25843/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25846/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25850/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25852/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25853/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25854/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25855/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25856/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25857/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25858/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25859/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/25860/?format=api"
    ],
    "dataLineage": "Data were collected onboard the NASA ER-2 aircraft, and selected radiosonde soundings from stations in the region of the experiment. Flights were conducted during October and November of 1992, April and May of 1993, and October of 1993. Data collected and prepared by NASA prior to publication on CD-ROM. BADC have obtained a copy of these data to assist in data discovery.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/677/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/671/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/665/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/674/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/660/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/668/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/701/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/698/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/692/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/695/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/680/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/930/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/927/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3178/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3180/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3181/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3184/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3177/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3182/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3179/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3176/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/3183/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/993/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2521/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/missing_licence.pdf",
            "licenceClassifications": "unstated"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}