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/34654/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 34654,
    "uuid": "39786f1e6fe2495291558cdc2a0b0aa1",
    "title": "Chapter 2 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 2.6 (v20220119)",
    "abstract": "Data for Figure 2.6 from Chapter 2 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6).\r\n\r\n\r\nFigure 2.6 shows globally averaged atmospheric mixing ratios of ozone-depleting substances and greenhouse gases.\r\n\r\n\r\n---------------------------------------------------\r\n How to cite this dataset\r\n ---------------------------------------------------\r\n When citing this dataset, please include both the data citation below (under 'Citable as') and the following citation for the report component from which the figure originates:\r\nGulev, S.K., P.W. Thorne, J. Ahn, F.J. Dentener, C.M. Domingues, S. Gerland, D. Gong, D.S. Kaufman, H.C. Nnamchi, J. Quaas, J.A. Rivera, S. Sathyendranath, S.L. Smith, B. Trewin, K. von Schuckmann, and R.S. Vose, 2021: Changing State of the Climate System. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change[Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 287–422, doi:10.1017/9781009157896.004.\r\n\r\n---------------------------------------------------\r\n Figure subpanels\r\n ---------------------------------------------------\r\n The figure has three panels with data provided for all panels in one single file.\r\n\r\n\r\n---------------------------------------------------\r\n List of data provided\r\n ---------------------------------------------------\r\n Each panel contains atmospheric mixing ratios for select greenhouse gases and/or ozone-depleting substances derived from atmospheric observations and historical compilations from 1950-2019, plotted as the annual mean for each year.\r\n\r\n\r\n---------------------------------------------------\r\n Data provided in relation to figure\r\n ---------------------------------------------------\r\n Panel a:\r\n \r\n - Datafile: Data_Figure_2_6.csv, column 20, black line.\r\n - Datafile: Data_Figure_2_6.csv, column 21, blue line.\r\n - Datafile: Data_Figure_2_6.csv, column 26, grey line.\r\n - Datafile: Data_Figure_2_6.csv, column 27, brown line.\r\n - Datafile: Data_Figure_2_6.csv, column 22, turquoise line.\r\n\r\n\r\nPanel b:\r\n \r\n - Datafile: Data_Figure_2_6.csv, column 23, black line.\r\n - Datafile: Data_Figure_2_6.csv, column 2, red line.\r\n - Datafile: Data_Figure_2_6.csv, column 33, turquoise line.\r\n - Datafile: Data_Figure_2_6.csv, column 34, grey line.\r\n - Datafile: Data_Figure_2_6.csv, column 28, violet line.\r\n\r\n\r\nPanel c:\r\n \r\n - Datafile: Data_Figure_2_6.csv, column 24, red line.\r\n - Datafile: Data_Figure_2_6.csv, column 25, cyan line.\r\n - Datafile: Data_Figure_2_6.csv, column 32, black line.\r\n - Datafile: Data_Figure_2_6.csv, column 14, brown line.\r\n - Datafile: Data_Figure_2_6.csv, column 15, orange line.\r\n - Datafile: Data_Figure_2_6.csv, column 13, grey line.\r\n\r\n\r\n---------------------------------------------------\r\n Notes on reproducing the figure from the provided data.\r\n ---------------------------------------------------\r\n Some mixing ratios of multiple species were summed for clarity (see Figure caption for details).  The summations are included in the data file. Dichloromethane (CH2Cl2) data were smoothed by applying a 3-yr moving average.\r\n\r\n\r\n---------------------------------------------------\r\n Sources of additional information\r\n ---------------------------------------------------\r\n The following weblinks are provided in the Related Documents section of this catalogue record:\r\n - Link to the figure on the IPCC AR6 website\r\n - Link to the report component containing the figure (Chapter 2)\r\n - Link to the Supplementary Material for Chapter 2, which contains details on the input data used in Table 2.SM.1",
    "keywords": "IPCC-DDC, IPCC, AR6, WG1, WGI, Sixth Assessment Report, Working Group I, Physical Science Basis, Chapter 2, Changing state, Multi-millennial context, pre-industrial, Natural forcing, anthropogenic forcing, Radiative forcing, Large-scale indicators, observed changes, Modes of variability, Figure 2.6, global greenhouse gas, chlorofluorocarbon, halon, CFC, HCFC, HFC, CMIP6",
    "publicationState": "citable",
    "dataPublishedTime": "2023-05-11T15:04:37",
    "doiPublishedTime": "2023-07-03T17:40:11",
    "updateFrequency": "notPlanned",
    "status": "ongoing",
    "result_field": {
        "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/39214/?format=api",
        "dataPath": "/badc/ar6_wg1/data/ch_02/ch2_fig06/v20220119",
        "oldDataPath": [],
        "storageLocation": "internal",
        "storageStatus": "online",
        "volume": 19801,
        "numberOfFiles": 4,
        "fileFormat": "csv"
    },
    "timePeriod": "https://api.catalogue.ceda.ac.uk/api/v2/times/9604/?format=api",
    "geographicExtent": "https://api.catalogue.ceda.ac.uk/api/v2/bboxes/529/?format=api",
    "nonGeographicFlag": false,
    "phenomena": [],
    "dataLineage": "Data produced by Intergovernmental Panel on Climate Change (IPCC) authors and supplied for archiving at the Centre for Environmental Data Analysis (CEDA) by the Technical Support Unit (TSU) for IPCC Working Group I (WGI).\r\n Data curated on behalf of the IPCC Data Distribution Centre (IPCC-DDC).",
    "removedDataTime": null,
    "removedDataReason": "",
    "language": "English",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/12611/?format=api"
    ],
    "projects": [
        "https://api.catalogue.ceda.ac.uk/api/v2/projects/32705/?format=api"
    ],
    "observationcollection_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observationcollections/32717/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164440/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164441/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164442/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164443/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164444/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164445/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164446/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/164447/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196258/?format=api"
    ],
    "procedureAcquisition": null,
    "procedureCompositeProcess": null,
    "procedureComputation": "https://api.catalogue.ceda.ac.uk/api/v2/computations/34656/?format=api",
    "permissions": [
        {
            "ob_id": "https://api.catalogue.ceda.ac.uk/api/v2/observations/2528/?format=api",
            "useLimitation": null,
            "accessConstraints": null,
            "accessCategory": "public",
            "accessRoles": null,
            "label": "public: None group",
            "licenceURL": "http://creativecommons.org/licenses/by/4.0/",
            "licenceClassifications": "any"
        }
    ],
    "discoveryKeywords": []
}