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/11006/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 11006,
    "uuid": "916986a220e6bad55411d9407ade347c",
    "title": "ESA Sea Surface Temperature Climate Change Initiative (ESA SST CCI): Analysis long term product version 1.0",
    "abstract": "The ESA Sea Surface Temperature Climate Change Initiative (ESA SST CCI) dataset accurately maps the surface temperature of the global oceans over the period 1991 to 2010, using observations from many satellites. The data provides an independently quantified SST to a quality suitable for climate research.\r\n\r\nThe ESA SST CCI Analysis Long Term Product consists of daily, spatially complete fields of sea surface temperature (SST), obtained by combining the orbit data from the AVHRR and ATSR ESA SST CCI Long Term Products, using optimal interpolation to provide SSTs where there were no measurements.  These data cover the period between 09/1991 and 12/2010.\r\n\r\nThis dataset is cited in: Merchant, C. J., Embury, O., Roberts-Jones, J., Fiedler, E., Bulgin, C. E., Corlett, G. K., Good, S., McLaren, A., Rayner, N., Morak-Bozzo, S. and Donlon, C. (2014), Sea surface temperature datasets for climate applications from Phase 1 of the European Space Agency Climate Change Initiative (SST CCI). Geoscience Data Journal. doi: 10.1002/gdj3.20\r\n\r\nPlease note that this dataset has now been superseded by the version 1.1 product, available from  http://catalogue.ceda.ac.uk/uuid/c65ce27928f34ebd92224c451c2a8bed",
    "keywords": "SST CCI",
    "publicationState": "citable",
    "dataPublishedTime": "2014-06-26T12:13:16",
    "doiPublishedTime": "2014-02-24T00:00:00",
    "updateFrequency": "notPlanned",
    "status": "superseded",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/11007/?format=api",
        "dataPath": "/neodc/esacci/sst/data/lt/Analysis/L4/v01.0",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 101594117434,
        "numberOfFiles": 7063,
        "fileFormat": "&lt;div property=\"cedacat:formats\"&gt;\r\n&lt;div class=\"formats\"&gt;Data availability and file format&lt;/div&gt;\r\n&lt;p&gt;\r\nThe Analysis Product consists of daily, spatially complete fields of SST, obtained by combining the orbit\r\ndata from the AVHRR (Advanced Very High Resolution Radiometer) and ATSR (Along Track Scanning Radiometer) Long Term products, using optimal interpolation to provide SSTs where\r\nthere were no measurements (a single file per day; 0.05&amp;#176; regular latitude-\r\nlongitude grid). These data start in September 1991.\r\nThe SSTs correspond approximately to the daily average of the temperature\r\nof the water at 20 cm depth. Uncertainty estimates are provided for\r\neach value.\r\n&lt;/p&gt;&lt;p&gt;\r\nThe data are stored in NetCDF-4 format files. Data arrays in NetCDF files are\r\nknown as &amp;#8216;variables&amp;#8217; and each variable has metadata stored with it. Please read the ESA CCI SST Product User Guide, available &lt;a href=\"http://www.esa-sst-cci.org/PUG/documents.htm\"&gt;here&lt;/a&gt; before using the data. There is also a Quick Start Guide &lt;a href=\"http://cedadocs.badc.rl.ac.uk/959/1/SST_CCI-QuickStartGuide-Issue-1.pdf\"&gt;here&lt;/a&gt;.\r\n&lt;/p&gt;&lt;p&gt;\r\nAccess to the ESA SST CCI Analysis long term product is available through our data browser &lt;a href=\"http://neodc.nerc.ac.uk/browse/neodc/esacci_sst/data/lt/Analysis\"&gt;here&lt;/a&gt; or via &lt;a href=\"ftp://ftp.ceda.ac.uk\"&gt;ftp&lt;/a&gt; at /neodc/esacci_sst/data/lt/Analysis \r\n&lt;/p&gt;&lt;p&gt;\r\n\r\n\r\n&lt;/p&gt;&lt;/div&gt;\r\n\r\n\r\n"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/3057/?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/6814/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/6816/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9567/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9569/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9580/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/9797/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11955/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11956/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11957/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11958/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/phenomona/11959/?format=api"
    ],
    "dataLineage": "Data were processed by the ESA CCI SST project team and supplied to NEODC by the UK Met Office.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/7345/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/7346/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/11008/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/11005/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/30128/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39737/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39731/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39733/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39734/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39735/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44909/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44920/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/39732/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44910/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44911/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44912/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44913/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44914/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44915/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44916/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44917/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/44918/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/11010/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2556/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_sst_terms_and_conditions.pdf",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": [
        {
            "ob_id": 1138,
            "name": "NDGO0003"
        },
        {
            "ob_id": 1139,
            "name": "CLIPC"
        }
    ]
}