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/32387/?format=api

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

{
    "ob_id": 32387,
    "uuid": "48efa9b67d69435caffd2d06cf8406d3",
    "title": "MCD43A3 - MODIS/Terra+Aqua BRDF/Albedo Daily L3 Global - 500m",
    "abstract": "These data are a copy of MODIS data from the NASA Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC). The copy is potentially only a subset. Below is the description from https://ladsweb.modaps.eosdis.nasa.gov/missions-and-measurements/products/MCD43A3\n\n\n\n\n\nThe MODerate-resolution Imaging Spectroradiometer (MODIS) Albedo product (MCD43A3) provides 500-meter data describing both directional hemispherical reflectance (black-sky albedo) and bihemispherical reflectance (white-sky albedo). The MCD43A3 product contains 16 days of data provided in a level-3 gridded data set in Sinusoidal projection.\n\nBoth Terra and Aqua data are used in the generation of this product, providing the highest probability for quality assurance input data.  It is designated with a shortname beginning with MCD, which is used to refer to 'combined' products, those comprised of data using both Terra and Aqua.\n\nNote that the V006 MODIS MCD43 products are retrieved daily and represent the best BRDF possible based on 16 days worth of inputs with the day of interest emphasized.  Unlike the earlier reprocessed versions (where the date of the product signifies the first day of the retrieval period), and the Direct Broadcast version (where the date signifies the last day of the retrieval period), the date associated with each daily V006 retrieval is the center of the moving 16 day input window. This change is in response to user requests.\n\nVersion-5 MODIS BRDF & Albedo products have attained Validation Stage 3.\n\nShortname: MCD43A3 , Platform: Combined Aqua Terra , Instrument: MODIS , Processing Level: Level-3 , Spatial Resolution: 500 m , Temporal Resolution: daily , ArchiveSets: 6, 61 , Collection: MODIS Collection 6    (ArchiveSet 6) , PGE Number: PGE23 , File Naming Convention: MCD43A3.AYYYYDDD.hHHvVV.CCC.YYYYDDDHHMMSS.hdf  YYYYDDD = Year and Day of Year of acquisition hHH = Horizontal tile number (0-35) vVV = Vertical tile number (0-17) CCC = Collection number YYYYDDDHHMMSS = Production Date and Time  , Citation: Crystal Schaaf - University of Massachusetts Boston, Zhuosen Wang - NASA GSFC and MODAPS SIPS - NASA. (2015). MCD43A3 MODIS/Terra+Aqua BRDF/Albedo Daily L3 Global - 500m. NASA LP DAAC. http://doi.org/10.5067/MODIS/MCD43A3.006 , Keywords: Climate Change, Albedo, Reflectance ",
    "keywords": "Climate Change, Albedo, Reflectance ",
    "publicationState": "published",
    "dataPublishedTime": "2021-04-15T14:05:06.279680",
    "doiPublishedTime": null,
    "updateFrequency": "asNeeded",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/32388/?format=api",
        "dataPath": "/neodc/modis/data/MCD43A3",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 84219885167950,
        "numberOfFiles": 1942163,
        "fileFormat": "HDF"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/8888/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64740/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64741/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64742/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64743/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64744/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64745/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64746/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64748/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64749/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64750/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64751/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64753/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64754/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64755/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64756/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64757/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64759/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64760/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64761/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64762/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64763/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64764/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64765/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64766/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64767/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64768/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/64769/?format=api"
    ],
    "dataLineage": "Data were downloaded from https://ladsweb.modaps.eosdis.nasa.gov/archive/allData/ to support UK research groups, especially NCEO.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10831/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/10895/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/10904/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/10892/?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/144200/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144201/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144202/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144203/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144204/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144206/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144207/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/144208/?format=api"
    ],
    "procedureAcquisition": "https://api.catalogue.ceda.ac.uk/api/v2/acquisitions/10908/?format=api",
    "procedureCompositeProcess": null,
    "procedureComputation": null,
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2557/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://modaps.modaps.eosdis.nasa.gov/services/faq/LAADS_Data-Use_Citation_Policies.pdf",
            "licenceClassifications": ""
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        }
    ]
}