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/37838/?format=api

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

{
    "ob_id": 37838,
    "uuid": "300559d22d9549049017f06bf38db929",
    "title": "Sentinel 5P: Formaldehyde (HCHO) Total Column level 2 data",
    "abstract": "This dataset contains total column Formaldehyde (HCHO) data from the TROPOspheric Monitoring Instrument (TROPOMI) aboard the Sentinel 5P satellite.\r\n\r\nSentinel 5 Precursor (S5P) was launched on the 13th of October 2017 carrying the TROPOspheric Monitoring Instrument (TROPOMI). The TROPOMI is a nadir-viewing, imaging spectrometer covering wavelength bands between the ultraviolet and the shortwave infrared. The instrument uses passive remote sensing techniques to attain its objective by measuring, at the Top Of Atmosphere (TOA), the solar radiation reflected by and radiated from the earth. In addition to the main product results, such as HCHO slant column, vertical column, and air mass factor, the level 2 (geolocated total columns) data files contain several additional parameters and diagnostic information.\r\n\r\nFormaldehyde is an intermediate gas in almost all oxidation chains of Non-Methane Volatile Organic Compounds (NMVOC), leading eventually to CO2. NMVOCs are, together with NOx, CO, and CH4, among the most important precursors of tropospheric O3. The major HCHO source in the remote atmosphere is CH4 oxidation. Over the continents, the oxidation of higher NMVOCs emitted from vegetation, fires, traffic and industrial sources results in important and localised enhancements of the HCHO levels.",
    "keywords": "Sentinel 5P, Formaldehyde, HCHO, ESA",
    "publicationState": "published",
    "dataPublishedTime": "2022-11-14T15:08:41",
    "doiPublishedTime": null,
    "updateFrequency": "",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/37839/?format=api",
        "dataPath": "/neodc/sentinel5p/data/L2_HCHO/",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 24321694294927,
        "numberOfFiles": 68691,
        "fileFormat": "These data are in NetCDF format."
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/10743/?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/55535/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66547/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66548/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66550/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66551/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66552/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66565/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66571/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66572/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66573/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66574/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66578/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66579/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66580/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66582/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66584/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66587/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66588/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66589/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66590/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66591/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66594/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66595/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66614/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66616/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66623/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66624/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66625/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66626/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66652/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66653/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66661/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66664/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66671/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66673/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66674/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66675/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66676/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66677/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66678/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66679/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66680/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66681/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66682/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66683/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66684/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66685/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66686/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66687/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66688/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66689/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66690/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66691/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66692/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66693/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66694/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66695/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66696/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66697/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66698/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66699/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66700/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66701/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66702/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66703/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66704/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66705/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66706/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66707/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66708/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66709/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66710/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66711/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66712/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66713/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66714/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66715/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66716/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66717/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66718/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66719/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66720/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66721/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66722/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66723/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66724/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66725/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66726/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66727/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66728/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66729/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66730/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66732/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66733/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66736/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66738/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66739/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66740/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66741/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66742/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66743/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66744/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66745/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66748/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/66750/?format=api"
    ],
    "dataLineage": "Data collected and prepared by European Space Agency (ESA). Downloaded from the Collaborative Hub for use by CEDA users.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/12321/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/26459/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30129/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180557/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180556/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180555/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180560/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180558/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180554/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180561/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180559/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180562/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/180563/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": "https://api.catalogue.ceda.ac.uk/api/v2/composites/38837/?format=api",
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2586/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}