{"id":317595,"date":"2024-04-14T08:21:04","date_gmt":"2024-04-14T06:21:04","guid":{"rendered":"https:\/\/climatescience.press\/?p=317595"},"modified":"2024-04-14T08:21:07","modified_gmt":"2024-04-14T06:21:07","slug":"three-more-new-temperature-reconstructions-document-a-warmer-medieval-period","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=317595","title":{"rendered":"\u00a0Three More New Temperature Reconstructions Document A Warmer Medieval Period"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

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

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

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

The North Atlantic, the Pacific Northwest (USA), and northern Finland were all warmer than today between 1000 and 2000 years ago.<\/strong><\/p>\n\n\n\n

Today\u2019s (2000 CE) July air temperatures in the Azores \u2013 archipelago islands in the middle North Atlantic, ~1400 km west of Portugal \u2013 are visually shown to average about 10 to 11\u00b0C in a newly published reconstruction (Raposeiro et al., 2024<\/a><\/strong>).<\/p>\n\n\n\n

This average air temperature is about 1 to 2\u00b0C warmer than this location\u2019s Little Ice Age climate, or the coldest period (~9.1\u00b0C from 1750-1800) of the last 2000 years. However, the Medieval Climate Anomaly (MCA) had temperatures reaching into the 13-15\u00b0C range, which is 3-4\u00b0C warmer than modern.<\/p>\n\n\n\n

\"\"
Image Source:\u00a0Raposeiro et al., 2024<\/a><\/strong><\/figcaption><\/figure>\n\n\n\n

A temperature reconstruction from a lake in the USA\u2019s Pacific Northwest (Baig, 2024<\/a><\/strong>) indicates glacial temperatures were only 1.0 to 1.6\u00b0C colder than the modern temperature, 12.2\u00b0C. Temperatures reached 13.7\u00b0C, or 1.5\u00b0C warmer than today, ~2500 years ago, and then fluctuated between 12.6 and 12.2\u00b0C from 1900 years ago until today, a period encompassing both the Medieval Warm Period and Little Ice Age.<\/p>\n\n\n\n

\"\"
Image Source:\u00a0Baig, 2024<\/a><\/strong><\/figcaption><\/figure>\n\n\n\n

Another lake sediment temperature reconstruction using branched glycerol dialkyl glycerol tetraethers (brGDGTs) from northern Finland (Otiniano et al., 2024<\/a><\/strong>) suggests the modern temperature (represented as the blue diamond) is among the coldest of the last ~8000 years. Temperatures were much warmer than modern about 1200 to 1500 years ago, and throughout the period from 7000 to 3000 years ago.<\/p>\n\n\n

\n
\"\"
Image Source:\u00a0Otiniano et al., 2024<\/a><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n

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

The North Atlantic, the Pacific Northwest (USA), and northern Finland were all warmer than today between 1000 and 2000 years ago.<\/p>\n","protected":false},"author":121246920,"featured_media":317602,"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":[691828120,691828122,691828121,691828119,691828118],"class_list":["post-317595","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-azores","tag-medieval-climate-anomaly-mca","tag-northern-finland","tag-usas-pacific-northwest","tag-warmer-medieval-period","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1kCv","jetpack-related-posts":[{"id":376187,"url":"https:\/\/climatescience.press\/?p=376187","url_meta":{"origin":317595,"position":0},"title":"New Study: Plant Remains Embedded in a Modern Glacier Evidence a Warmer Antarctica 1000 Years Ago","author":"uwe.roland.gross","date":"04\/24\/2025","format":false,"excerpt":"According to a\u00a0new study, moss samples with intact leaves and stems 10 to 13 mm long have been discovered embedded in glacier ice \u2013 the Boulder Clay Glacier (BCG) \u2013 in Antarctica\u2019s Victoria Land.","rel":"","context":"In \"Boulder Clay Glacier (BCG)\"","block_context":{"text":"Boulder Clay Glacier (BCG)","link":"https:\/\/climatescience.press\/?tag=boulder-clay-glacier-bcg"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/image-557.png?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/image-557.png?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/image-557.png?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/04\/image-557.png?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":369333,"url":"https:\/\/climatescience.press\/?p=369333","url_meta":{"origin":317595,"position":1},"title":"Medieval Warm Period Undeniable, pronounced in Antarctica and Poland, 2 New Studies Show","author":"uwe.roland.gross","date":"03\/10\/2025","format":false,"excerpt":"The Medieval Warm Period, the natural warm phase between 700 and 1300 AD, cannot be reproduced climate models because the simulations react primarily to CO2. 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