{"id":387689,"date":"2025-07-09T09:06:47","date_gmt":"2025-07-09T07:06:47","guid":{"rendered":"https:\/\/climatescience.press\/?p=387689"},"modified":"2025-07-09T09:06:49","modified_gmt":"2025-07-09T07:06:49","slug":"new-study-the-arctic-was-9c-warmer-than-today-during-the-holocene-thermal-maximum","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=387689","title":{"rendered":"New Study: The Arctic Was 9\u00b0C Warmer Than Today During The Holocene Thermal Maximum"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

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

From NoTrickZone<\/a><\/p>\n\n\n\n

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

Holocene (11,700 to 8,200 years ago) Arctic (Svalbard) temperatures \u201cwere up to 9\u00b0C higher than today\u201d according to the authors of a new<\/strong> Nature<\/em> journal study<\/strong><\/a>. At that time CO2 was thought to only hover around 260 ppm.<\/p>\n\n\n\n

Svalbard then cooled as CO2 rose for the next 8,000 years \u2013 a negative correlation that wholly contradicts the rising-CO2-drives-Arctic-warmth narrative.<\/p>\n\n\n\n

Nonetheless, climate models are predicated on the assumption rising human CO2 emissions (RCP 8.5) will lead to a warming of ~8\u00b0C by 2100.<\/p>\n\n\n\n

\"\"
Image Source:\u00a0Auer et al., 2025<\/a><\/strong><\/figcaption><\/figure>\n\n\n\n

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

Holocene (11,700 to 8,200 years ago) Arctic (Svalbard) temperatures \u201cwere up to 9\u00b0C higher than today\u201d according to the authors of a\u00a0new\u00a0Nature\u00a0journal study. At that time CO2 was thought to only hover around 260 ppm.<\/p>\n","protected":false},"author":121246920,"featured_media":387693,"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_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":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":[691818605,691818153,691832844,691835668,691818191],"class_list":["post-387689","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-arctic","tag-climate-models","tag-holocene-thermal-maximum","tag-hydroclimate-reconstruction","tag-svalbard","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1CR3","jetpack-related-posts":[{"id":288557,"url":"https:\/\/climatescience.press\/?p=288557","url_meta":{"origin":387689,"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. November 2023 Millennial-scale Arctic sea ice reconstructions do not corroborate alarmist claims of unprecedented sea ice losses in modern times.\u00a0 Using sea ice biomarker proxy (IP25), scientists (Kolling et al., 2023) have determined that the sea ice extent in the Labrador Sea was nearly absent throughout\u2026","rel":"","context":"In \"Arctic sea ice\"","block_context":{"text":"Arctic sea ice","link":"https:\/\/climatescience.press\/?tag=arctic-sea-ice"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0Arctic-sea.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0Arctic-sea.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0Arctic-sea.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, 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Ago","author":"uwe.roland.gross","date":"02\/17\/2026","format":false,"excerpt":"According to a\u00a0new study, there was \u201cno sea ice\u201d in the Arctic\u2019s Beaufort Sea from 11,700 to 8200 years ago.","rel":"","context":"In \"Atlantic meridional overturning circulation (AMOC)\"","block_context":{"text":"Atlantic meridional overturning circulation (AMOC)","link":"https:\/\/climatescience.press\/?tag=atlantic-meridional-overturning-circulation-amoc"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0arcticseaice.jpg?fit=1200%2C685&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0arcticseaice.jpg?fit=1200%2C685&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0arcticseaice.jpg?fit=1200%2C685&ssl=1&resize=525%2C300 1.5x, 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3x"},"classes":[]},{"id":327837,"url":"https:\/\/climatescience.press\/?p=327837","url_meta":{"origin":387689,"position":4},"title":"DNA Evidence Reveals Domestic Cats, Dogs, African Wildcats, Frogs Lived In The Arctic 9000 Years Ago","author":"uwe.roland.gross","date":"05\/11\/2024","format":false,"excerpt":"A new study finds warmth-demanding species could survive in the Holocene Arctic (northern Norway) hundreds to thousands of km north of where they reside today. 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