{"id":426755,"date":"2026-02-17T12:21:28","date_gmt":"2026-02-17T11:21:28","guid":{"rendered":"https:\/\/climatescience.press\/?p=426755"},"modified":"2026-02-17T12:21:30","modified_gmt":"2026-02-17T11:21:30","slug":"new-study-a-4c-warmer-beaufort-sea-had-no-sea-ice-11700-8200-years-ago","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=426755","title":{"rendered":"New Study: A 4\u00b0C Warmer Beaufort Sea Had \u2018No Sea Ice\u2019 11,700 \u2013 8200 Years Ago"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

From No Trick Zone<\/a><\/p>\n\n\n\n

By\u00a0Kenneth Richard<\/a>\u00a0<\/em><\/p>\n\n\n\n

For the last 3000 years the Beaufort Sea region has had \u201cpermanent sea ice.\u201d<\/strong><\/h4>\n\n\n\n

<\/p>\n\n\n\n

According to a new study<\/a><\/strong>, there was \u201cno sea ice\u201d in the Arctic\u2019s Beaufort Sea from 11,700 to 8200 years ago.<\/p>\n\n\n\n

During this period, summer sea surface temperatures (SSTs) averaged ~7\u00b0C, varying up to 9.6\u00b0C.<\/p>\n\n\n\n

\n

\u201cThe Early Holocene (11.7\u22128.2 ka) is characterized by relatively higher sea surface temperature, lower salinity, and no spring\/summer sea ice until 8.5 ka on the Beaufort Sea slope.\u201d<\/em><\/p>\n<\/blockquote>\n\n\n\n

Modern summer SSTs average 3\u00b0C in this region, which means SSTs are at least 4\u00b0C colder than they were during the Early Holocene.<\/p>\n\n\n\n

From approximately 7000 to 5000 years ago (the Mid Holocene), seasonal sea ice was present in this Beaufort Sea region.<\/p>\n\n\n\n

For the last 3000 years, sea ice has been present year-round.<\/p>\n\n\n\n

\n

\u201c\u2026permanent sea-ice cover on the slope after 3 ka.\u201d<\/em><\/p>\n<\/blockquote>\n\n\n\n

\"\"
Image Source:\u00a0Santos et al., 2026<\/a><\/strong><\/figcaption><\/figure>\n\n\n\n

This new study echoes a 2020 study (Wu et al.<\/a><\/strong>) indicating the Beaufort Sea had \u201cdominantly ice-free conditions\u201d and SSTs were over 4\u00b0C warmer than today during the Early Holocene.<\/p>\n\n\n\n

\"\"
Image Source:\u00a0Wu et al., 2020<\/strong><\/figcaption><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

According to a\u00a0new study, there was \u201cno sea ice\u201d in the Arctic\u2019s Beaufort Sea from 11,700 to 8200 years ago.<\/p>\n","protected":false},"author":121246920,"featured_media":375526,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691821384,691841434,691819875,691819784,691841435,691841436,691841433,691826905],"class_list":["post-426755","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-atlantic-meridional-overturning-circulation-amoc","tag-beaufort-sea","tag-canadian-arctic","tag-early-holocene","tag-lipid-biomarkers","tag-mackenzie-river","tag-mid-holocene-2","tag-sea-surface-temperatures-ssts","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0arcticseaice.jpg?fit=1280%2C731&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1N19","jetpack-related-posts":[{"id":288557,"url":"https:\/\/climatescience.press\/?p=288557","url_meta":{"origin":426755,"position":0},"title":"New Study: Modern Sea Ice Extent Is Nearly The Highest In 9000 Years Across the Arctic","author":"uwe.roland.gross","date":"11\/25\/2023","format":false,"excerpt":"From NoTricksZone By\u00a0Kenneth Richard\u00a0on\u00a020. 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