{"id": 1033263, "name": "Sea ice anomaly in the Antarctic by month", "unit": "million square kilometers", "createdAt": "2025-05-22T15:25:53.000Z", "updatedAt": "2025-05-26T07:41:58.000Z", "coverage": "", "timespan": "1980-2025", "datasetId": 7099, "shortUnit": "million km\u00b2", "columnOrder": 0, "shortName": "sea_ice_extent_antarctic", "catalogPath": "grapher/climate/2025-05-22/sea_ice_anomalies_by_month/sea_ice_index#sea_ice_extent_antarctic", "descriptionShort": "Each point represents the monthly average sea ice extent relative to a baseline, which is the average sea ice extent for the same month over the 30-year period from 1981 to 2010.", "type": "float", "grapherConfigIdETL": "0196f899-d5b0-7757-8852-93097a9c9005", "dataChecksum": "2295393419683092578", "metadataChecksum": "-7558555144479741253", "datasetName": "Sea ice anomaly in the northern and southern hemispheres", "updatePeriodDays": 60, "datasetVersion": "2025-05-22", "nonRedistributable": false, "display": {"unit": "million square kilometers", "shortUnit": "million km\u00b2"}, "schemaVersion": 2, "processingLevel": "minor", "presentation": {"titlePublic": "Sea ice anomaly in the Antarctic by month", "topicTagsLinks": ["Climate Change"]}, "dimensions": {"years": {"values": [{"id": 1980}, {"id": 1981}, {"id": 1982}, {"id": 1983}, {"id": 1984}, {"id": 1985}, {"id": 1986}, {"id": 1987}, {"id": 1988}, {"id": 1989}, {"id": 1990}, {"id": 1991}, {"id": 1992}, {"id": 1993}, {"id": 1994}, {"id": 1995}, {"id": 1996}, {"id": 1997}, {"id": 1998}, {"id": 1999}, {"id": 2000}, {"id": 2001}, {"id": 2002}, {"id": 2003}, {"id": 2004}, {"id": 2005}, {"id": 2006}, {"id": 2007}, {"id": 2008}, {"id": 2009}, {"id": 2010}, {"id": 2011}, {"id": 2012}, {"id": 2013}, {"id": 2014}, {"id": 2015}, {"id": 2016}, {"id": 2017}, {"id": 2018}, {"id": 2019}, {"id": 2020}, {"id": 2021}, {"id": 2022}, {"id": 2023}, {"id": 2024}, {"id": 2025}]}, "entities": {"values": [{"id": 365346, "name": "April", "code": null}, {"id": 365351, "name": "August", "code": null}, {"id": 365348, "name": "December", "code": null}, {"id": 365342, "name": "February", "code": null}, {"id": 365347, "name": "January", "code": null}, {"id": 365340, "name": "July", "code": null}, {"id": 365349, "name": "June", "code": null}, {"id": 365350, "name": "March", "code": null}, {"id": 365344, "name": "May", "code": null}, {"id": 365345, "name": "November", "code": null}, {"id": 365341, "name": "October", "code": null}, {"id": 365343, "name": "September", "code": null}]}}, "origins": [{"id": 3572, "title": "Sea Ice Index", "producer": "National Snow and Ice Data Center", "citationFull": "Fetterer, F., K. Knowles, W. N. Meier, M. Savoie, and A. K. Windnagel. (2017). Sea Ice Index, Version 3 [Data Set]. Boulder, Colorado USA. National Snow and Ice Data Center. https://doi.org/10.7265/N5K072F8.", "attribution": "National Snow and Ice Data Center - Sea Ice Index (2025)", "attributionShort": "NSIDC", "versionProducer": "Version 3", "urlMain": "https://nsidc.org/data/g02135/", "urlDownload": "https://noaadata.apps.nsidc.org/NOAA/G02135/seaice_analysis/Sea_Ice_Index_Monthly_Data_by_Year_G02135_v3.0.xlsx", "dateAccessed": "2025-05-22", "datePublished": "2025-05-21", "license": {"name": "CC BY 4.0"}}]}