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/37668/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 37668,
    "uuid": "233fbf6df84547dda891d316da93885b",
    "title": "Regional summaries from Arctic high-resolution sea ice-ocean forced modelling projections (2000-2050)",
    "abstract": "Regional summaries from the high-resolution sea ice-ocean-biogeochemical modelling UKESM1.1-forced projections were generated to analyse oceanic impacts on retreat of the Arctic sea-ice pack in the high Arctic and from areas of the Transpolar drift, north of Greenland and in the Fram Strait in the future climate up to the 2050s and subsequent impacts on the ocean biogeochemistry. The model datasets span the Arctic Ocean proper and the sub-Arctic seas, covering the near-present and future climate from 2000-2050. The model used was a NEMOv4.2-SI3 common NOC-UK MetOffice configuration (G8.7) coupled to the MEDUSA ecosystem model. The forcing fields were from the UK ESM1.1 model SSP370 integrations.\r\n\r\nThe sea ice model output has been validated against the AMSR-E satellite sea-ice concentrations, as well as the CryoSat-2 and SMOS sea-ice thickness datasets. Monthly averages of the key sea-ice and ocean fields for the pan-Arctic and Greenland regions for the end of each of the decades 2020, 2030, 2040, and 2050 were created and combined into 4-D files for easy data handling.\r\n\r\nThe model datasets were produced by National Oceanography Centre (NOC) scientists Dr Yevgeny Aksenov and Dr Stefanie Rynders, using the global model runs carried out by Dr Andrew Coward. Dr Andrew Yool advised on the runs and assisted with data handling, and Dr Stephen Kelly also assisted with data extraction. The data were produced under Natural Environment Research Council (NERC) project PRE-MELT (grant references NE/T001399/1, NE/T000260/1, NE/T000546/1). Additional funding also came from NERC projects APEAR (grant reference NE/R012865/1), ARISE (grant reference NE/P006000/1), and Arctic PrIZE (grant reference NE/P006078/1), funded under the NERC/BMBF Changing Arctic Ocean Programme, from NERC NCLTS-M programme ESM (grant reference NE/N018036/1)  and NCLTS-S programme CLASS (grant reference NE/R015953/1), from the European Commission grant CRESCENDO (grant no. 641816) and from the European Union’s Horizon 2020 research and innovation programme under grant agreement 820989 (Project COMFORT—Our common future ocean in the Earth system - quantifying coupled cycles of carbon, oxygen, and nutrients for determining and achieving safe operating spaces with respect to tipping points).",
    "keywords": "Arctic Ocean, sea-ice, UK ESM1.1, Fram Strait, MEDUSA, SMOS, CryoSat-2, ARCRegiF",
    "publicationState": "published",
    "dataPublishedTime": "2023-08-18T09:54:32",
    "doiPublishedTime": null,
    "updateFrequency": "notPlanned",
    "status": "completed",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/37669/?format=api",
        "dataPath": "/bodc/SOC220091/PRE-MELT_projections",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 19680668714,
        "numberOfFiles": 9,
        "fileFormat": "Data are CF-compliant NetCDF formatted data files"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/11278/?format=api",
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    "nonGeographicFlag": false,
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    ],
    "dataLineage": "Model projections were produced by scientists at the National Oceanography Centre (NOC), Southampton, UK. Outputs suitable for re-use were uploaded by the scientists to the Centre for Environmental Data Analysis (CEDA) ingestion area, where the British Oceanographic Data Centre (BODC) carried out ingestion process, creating catalogue records and making the data available for public download.",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [],
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}