{"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":"","_crdt_document":"","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_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":{"0":"post-387689","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-arctic","9":"tag-climate-models","10":"tag-holocene-thermal-maximum","11":"tag-hydroclimate-reconstruction","12":"tag-svalbard","14":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/07\/0AQMcRLd2Kk4Jh0iE7fNP3obsf-5tR9k5fVcJANmyS0v_l4UsMkrpljtXMMH9QGQ0XC4lEYVH02dSASIRTspYwZ2GFSRYa5qkzCW-Dy1IGaLxPsjL7NzdZrdXecJCsKk-N6Z10LH-LnRaS7w7jxDwRJM70cvYJA-1.jpeg?fit=1280%2C1280&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1CR3","jetpack-related-posts":[{"id":172372,"url":"https:\/\/climatescience.press\/?p=172372","url_meta":{"origin":387689,"position":0},"title":"17 More Studies Show No Unusual Warming Trend In Recent Centuries\u2026And A Warmer Holocene","author":"uwe.roland.gross","date":"11\/11\/2021","format":false,"excerpt":"The evidence\u00a0continues to accumulate affirming\u00a0there is nothing unusual about modern temperature changes \u2013 including recent net\u00a0cooling\u00a0\u2013 throughout large regions of the globe. 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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, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0Arctic-sea.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/11\/0Arctic-sea.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":426755,"url":"https:\/\/climatescience.press\/?p=426755","url_meta":{"origin":387689,"position":5},"title":"New Study: A 4\u00b0C Warmer Beaufort Sea Had \u2018No Sea Ice\u2019 11,700 \u2013 8200 Years Ago","author":"uwe.roland.gross","date":"17\/02\/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, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0arcticseaice.jpg?fit=1200%2C685&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/0arcticseaice.jpg?fit=1200%2C685&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/387689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/users\/121246920"}],"replies":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=387689"}],"version-history":[{"count":4,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/387689\/revisions"}],"predecessor-version":[{"id":387695,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/387689\/revisions\/387695"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/387693"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=387689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=387689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=387689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}