{"id": 1229417, "name": "Monthly sea ice extent in the Antarctic, decadal average", "unit": "million square kilometers", "createdAt": "2026-05-14T09:17:52.000Z", "updatedAt": "2026-05-18T08:45:32.000Z", "coverage": "", "timespan": "1-12", "datasetId": 7958, "shortUnit": "million km\u00b2", "columnOrder": 0, "shortName": "sea_ice_extent_antarctic", "catalogPath": "grapher/climate/2026-05-13/sea_ice_extent_by_decade/sea_ice_index#sea_ice_extent_antarctic", "descriptionShort": "Each point represents the monthly average sea ice extent, averaged across all years within the decade.", "type": "float", "grapherConfigIdETL": "019e25c7-33ba-73b8-b03e-68a965005232", "dataChecksum": "6875538780352905948", "metadataChecksum": "1274187972371070693", "datasetName": "Sea ice extent in the northern and southern hemispheres by decade", "updatePeriodDays": 60, "datasetVersion": "2026-05-13", "nonRedistributable": false, "display": {"unit": "million square kilometers", "shortUnit": "million km\u00b2"}, "schemaVersion": 2, "processingLevel": "minor", "presentation": {"titlePublic": "Monthly sea ice extent in the Antarctic, decadal average", "topicTagsLinks": ["Climate Change"]}, "dimensions": {"years": {"values": [{"id": 1}, {"id": 2}, {"id": 3}, {"id": 4}, {"id": 5}, {"id": 6}, {"id": 7}, {"id": 8}, {"id": 9}, {"id": 10}, {"id": 11}, {"id": 12}]}, "entities": {"values": [{"id": 207954, "name": "1980s", "code": null}, {"id": 207955, "name": "1990s", "code": null}, {"id": 207956, "name": "2000s", "code": null}, {"id": 250657, "name": "2010s", "code": null}, {"id": 370188, "name": "2020s", "code": null}, {"id": 372729, "name": "2026", "code": null}]}}, "origins": [{"id": 15118, "title": "Sea Ice Index", "producer": "National Snow and Ice Data Center", "citationFull": "Fetterer, F., Knowles, K., Meier, W. N., Savoie, M., Windnagel, A. K. & Stafford, T. (2025). Sea Ice Index. (G02135, Version 4). [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. https://doi.org/10.7265/a98x-0f50.", "attribution": "National Snow and Ice Data Center - Sea Ice Index (2026)", "attributionShort": "NSIDC", "versionProducer": "Version 4", "urlMain": "https://nsidc.org/data/g02135/", "urlDownload": "https://noaadata.apps.nsidc.org/NOAA/G02135/seaice_analysis/Sea_Ice_Index_Monthly_Data_by_Year_G02135_v4.0.xlsx", "dateAccessed": "2026-05-13", "datePublished": "2026-05-13", "license": {"name": "CC BY 4.0"}}]}