{"id":268679,"date":"2023-07-21T14:03:40","date_gmt":"2023-07-21T12:03:40","guid":{"rendered":"https:\/\/climatescience.press\/?p=268679"},"modified":"2023-07-21T14:03:43","modified_gmt":"2023-07-21T12:03:43","slug":"new-greenland-ice-sheet-study-shows-why-its-called-climate-idiocy","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=268679","title":{"rendered":"New Greenland ice sheet study shows why it\u2019s called \u201cclimate idiocy\u201d"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"481\" data-attachment-id=\"268687\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=268687\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?fit=1160%2C771&amp;ssl=1\" data-orig-size=\"1160,771\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;20&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;NIKON D50&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1305277013&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;34&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0.000625&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"00AroundUpernavikANDUummannaq\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?fit=723%2C481&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?resize=723%2C481&#038;ssl=1\" alt=\"\" class=\"wp-image-268687\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?resize=1024%2C681&amp;ssl=1 1024w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?resize=768%2C510&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?w=1160&amp;ssl=1 1160w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">From <a href=\"https:\/\/junkscience.com\/\">JunkScience.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/twitter.com\/JunkScience?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Escreen-name%3Ajunkscience%7Ctwcon%5Es1_c1\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>By <a href=\"https:\/\/twitter.com\/JunkScience?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Escreen-name%3Ajunkscience%7Ctwcon%5Es1_c1\" target=\"_blank\" rel=\"noreferrer noopener\">Steve Milloy<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A new study reports that Northwest Greenland was ice free 400,000 years ago when the atmospheric CO2 level was an estimated 286 ppm. But the study authors don\u2019t look at that finding the same way you probably do.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"216\" data-attachment-id=\"268680\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=268680\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-627.png?fit=728%2C217&amp;ssl=1\" data-orig-size=\"728,217\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image-627\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-627.png?fit=723%2C216&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-627.png?resize=723%2C216&#038;ssl=1\" alt=\"\" class=\"wp-image-268680\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-627.png?w=728&amp;ssl=1 728w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-627.png?resize=300%2C89&amp;ssl=1 300w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Here is the study media released abstract:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"683\" data-attachment-id=\"268682\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=268682\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-628.png?fit=728%2C688&amp;ssl=1\" data-orig-size=\"728,688\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image-628\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-628.png?fit=723%2C683&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-628.png?resize=723%2C683&#038;ssl=1\" alt=\"\" class=\"wp-image-268682\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-628.png?w=728&amp;ssl=1 728w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-628.png?resize=300%2C284&amp;ssl=1 300w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"723\" height=\"489\" data-attachment-id=\"268683\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=268683\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-629.png?fit=728%2C492&amp;ssl=1\" data-orig-size=\"728,492\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image-629\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-629.png?fit=723%2C489&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-629.png?resize=723%2C489&#038;ssl=1\" alt=\"\" class=\"wp-image-268683\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-629.png?w=728&amp;ssl=1 728w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-629.png?resize=300%2C203&amp;ssl=1 300w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">So I look at then result and I think: Northwest Greenland was ice-free 400,000 years ago when CO2 was at 286 ppm. Yet today Northwest Greenland is a frozen wasteland at 424 ppm CO2. That must mean that atmospheric CO2 is not determinative of whether Northwest Greenland is ice-free.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But the study authors interpret it quite differently. They need to spin readers away from that obvious conclusion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Their bizarre take-away is essentially that we are overdue for Greenland melting because atmospheric CO2 has already increased so much past 286 ppm and all that CO2 is warming the planet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"268685\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=268685\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-630.png?fit=728%2C1403&amp;ssl=1\" data-orig-size=\"728,1403\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image-630\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-630.png?fit=531%2C1024&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-630.png?resize=723%2C1393&#038;ssl=1\" alt=\"\" class=\"wp-image-268685\" style=\"width:761px;height:1466px\" width=\"723\" height=\"1393\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-630.png?resize=531%2C1024&amp;ssl=1 531w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-630.png?resize=156%2C300&amp;ssl=1 156w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-630.png?w=728&amp;ssl=1 728w\" sizes=\"auto, (max-width: 723px) 100vw, 723px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Also note that the study authors somehow estimate it will take 30,000 years for CO2 levels to get to 380 ppm if atmospheric CO2 starts to decline by 2040. Accepting that at face value, the 350 ppm level espoused by Jim Hansen and Bill McKibben, ex of 350.org) is never happening.Not that we need this study to tell us that.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/twitter.com\/JunkScience?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Escreen-name%3Ajunkscience%7Ctwcon%5Es1_c1\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><a href=\"https:\/\/twitter.com\/JunkScience?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Escreen-name%3Ajunkscience%7Ctwcon%5Es1_c1\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new study reports that Northwest Greenland was ice free 400,000 years ago when the atmospheric CO2 level was an estimated 286 ppm. But the study authors don\u2019t look at that finding the same way you probably do.<\/p>\n","protected":false},"author":121246920,"featured_media":268687,"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":[691818056,691821267,691818076,691821266,691821265],"class_list":{"0":"post-268679","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-climate-change","9":"tag-climate-idiocy","10":"tag-co2","11":"tag-ice-free-2","12":"tag-northwest-greenland","14":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00AroundUpernavikANDUummannaq.jpg?fit=1160%2C771&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-17Tx","jetpack-related-posts":[{"id":360304,"url":"https:\/\/climatescience.press\/?p=360304","url_meta":{"origin":268679,"position":0},"title":"Central Greenland Was Recently Ice-Free and Covered with Plants When CO2 Was Under 300 ppm","author":"uwe.roland.gross","date":"03\/01\/2025","format":false,"excerpt":"Scientists have known since the GISP2 borehole was drilled in 1993 that Central Greenland deglaciated at least once in the late Pleistocene (Bierman et al., 2024). Indeed, the Summit of the modern Greenland ice sheet was actually ice-free at some point between 250,000 and 1.1 million years ago \u2013 which\u2026","rel":"","context":"In \"carbon dioxide (CO\u2082)\"","block_context":{"text":"carbon dioxide (CO\u2082)","link":"https:\/\/climatescience.press\/?tag=carbon-dioxide-co%e2%82%82"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0DSC06126.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0DSC06126.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0DSC06126.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0DSC06126.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0DSC06126.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":360658,"url":"https:\/\/climatescience.press\/?p=360658","url_meta":{"origin":268679,"position":1},"title":"Scientists: Greenland July 14\u00b0C Warmer With 35% Less CO2 250,000 Years Ago!","author":"uwe.roland.gross","date":"06\/01\/2025","format":false,"excerpt":"A new study by Bierman et al titled:\u00a0Plant, insect, and fungi fossils under the center of Greenland\u2019s ice sheet are evidence of ice-free times, shows that \u201cin the middle of Greenland, where a three-kilometer-thick ice sheet now sits, plants and insects once flourished and at CO2 levels well below today\u2019s\u2026","rel":"","context":"In \"carbon dioxide (CO\u2082)\"","block_context":{"text":"carbon dioxide (CO\u2082)","link":"https:\/\/climatescience.press\/?tag=carbon-dioxide-co%e2%82%82"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Seljalandsfoss-summer.webp?fit=1200%2C583&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Seljalandsfoss-summer.webp?fit=1200%2C583&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Seljalandsfoss-summer.webp?fit=1200%2C583&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Seljalandsfoss-summer.webp?fit=1200%2C583&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/01\/0Seljalandsfoss-summer.webp?fit=1200%2C583&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":244493,"url":"https:\/\/climatescience.press\/?p=244493","url_meta":{"origin":268679,"position":2},"title":"New Study Indicates NW Greenland Was \u2018At Least 9\u00b0C\u2019 Warmer Than Today When CO2 Was ~300 ppm ne","author":"uwe.roland.gross","date":"19\/02\/2023","format":false,"excerpt":"Scientists analyze the habitat temperature thresholds for modern plants, trees, insects, mammals, etc., and compare these values to the climate conditions these same species were living in according to the paleoclimate fossil record to determine how much warmer (or colder) the past was relative to the present.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/02\/image-492.png?fit=1200%2C1034&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/02\/image-492.png?fit=1200%2C1034&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/02\/image-492.png?fit=1200%2C1034&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/02\/image-492.png?fit=1200%2C1034&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/02\/image-492.png?fit=1200%2C1034&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":194663,"url":"https:\/\/climatescience.press\/?p=194663","url_meta":{"origin":268679,"position":3},"title":"Deliberately Alarmist \u2018The Last Time CO2 Was This High\u2019 Claims Are Rooted in Guesswork, Not Science","author":"uwe.roland.gross","date":"04\/04\/2022","format":false,"excerpt":"Recent reconstructions suggest CO2 concentrations may have ranged between 150 and 600 ppm (or more) throughout the last 4 million years. We routinely see screaming headlines such as\u00a0CO2 in the Atmosphere Climbs to Highest Level in 4.5 Million Years\u00a0or\u00a0Carbon Dioxide Levels Reach Highest Point in Human History. However, these claims\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/04\/0Holocene-CO2-reached-500-ppm-for-Greenland-and-400-ppm-for-Antarctica-Berner-1980.jpg?fit=841%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/04\/0Holocene-CO2-reached-500-ppm-for-Greenland-and-400-ppm-for-Antarctica-Berner-1980.jpg?fit=841%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/04\/0Holocene-CO2-reached-500-ppm-for-Greenland-and-400-ppm-for-Antarctica-Berner-1980.jpg?fit=841%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/04\/0Holocene-CO2-reached-500-ppm-for-Greenland-and-400-ppm-for-Antarctica-Berner-1980.jpg?fit=841%2C768&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":221386,"url":"https:\/\/climatescience.press\/?p=221386","url_meta":{"origin":268679,"position":4},"title":"There Is No Detectable Link Between Greenland\u2019s Climate and Atmospheric CO2 Changes","author":"uwe.roland.gross","date":"29\/09\/2022","format":false,"excerpt":"When CO2 levels were in the mid-200s parts per million (11.7 to 4.5 thousand years ago) the Arctic and northern Greenland were 2-4\u00b0C warmer than now, ice margins were 80 km behind today\u2019s, ice-free open water conditions prevailed, and Greenland warmed 10\u00b0C in just 60 years.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-1429.png?fit=1185%2C801&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-1429.png?fit=1185%2C801&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-1429.png?fit=1185%2C801&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-1429.png?fit=1185%2C801&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2022\/09\/image-1429.png?fit=1185%2C801&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":421181,"url":"https:\/\/climatescience.press\/?p=421181","url_meta":{"origin":268679,"position":5},"title":"New Study: Greenland Was 3-7\u00b0C Warmer and Far Less Glaciated Than Today 6000-8000 Years Ago","author":"uwe.roland.gross","date":"13\/01\/2026","format":false,"excerpt":"Approximately 6000-8000 years ago, or when atmospheric CO2 was alleged to be ~260 ppm, PD had deglaciated completely, exposing the soil to sunlight.","rel":"","context":"Similar post","block_context":{"text":"Similar 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