{"id":996,"date":"2021-05-15T15:28:09","date_gmt":"2021-05-15T13:28:09","guid":{"rendered":"https:\/\/davidbolius.at\/temperatur-eiszeit\/"},"modified":"2021-05-16T13:54:14","modified_gmt":"2021-05-16T11:54:14","slug":"temperatur-ice-age","status":"publish","type":"post","link":"https:\/\/davidbolius.at\/en\/blog\/2021\/05\/15\/temperatur-ice-age\/","title":{"rendered":"Temperature during the last ice age"},"content":{"rendered":"\n<p>The question how much it was colder on earth during the last Ice Age is being re-opened. This question has preoccupied climate scientists for decades. Earlier estimates assumed that the mean global temperature during the  last Glacial maximum (LGM) was around 4\u00b0C below today&#8217;s value. However, the data available for high latitudes (areas close to poles) was much better than data from the tropics and in the subtropics. <\/p>\n\n\n\n<p>In a recently published article in Nature, new measurements of noble gases in fossil groundwater were evaluated. This finally made it possible to reconstruct temperatures in areas close to the equator in a more reliable way. The result: During LGM it was almost 6\u00b0C colder globally, so the mean temperature of the earth was 8\u00b0 instead of the modern 14\u00b0C. <\/p>\n\n\n\n<p>This new, lower value of the average temperature suggests a higher sensitivity of the temperature in relation to the CO<sub>2<\/sub> content than previously thought. This is bad news for global warming, which could therefore be more severe than previously thought.<\/p>\n\n\n\n<p><strong>References<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>CLIMAP<\/strong>,\u00a0<strong>1981<\/strong>.\u00a0 Seasonal reconstructions\u00a0 of the\u00a0 Earths\u00a0 surface at\u00a0 the\u00a0 last glacial maximum.\u00a0 Map series, technical\u00a0 report\u00a0 mc-36, Geological Society of America.<\/li><li>Seltzer, A.M., Ng, J., Aeschbach, W. <em>et al.<\/em> Widespread six degrees Celsius cooling on land during the Last Glacial Maximum. <em><strong>Nature<\/strong><\/em> <strong>593, <\/strong>228\u2013232 (<strong>2021<\/strong>). https:\/\/doi.org\/10.1038\/s41586-021-03467-6<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/davidbolius.at\/wp-content\/uploads\/2021\/05\/Eiszeit-Temperatur-pexels-2968789-2968789.jpg\" alt=\"\" class=\"wp-image-997\" width=\"450\" height=\"450\" srcset=\"https:\/\/davidbolius.at\/wp-content\/uploads\/2021\/05\/Eiszeit-Temperatur-pexels-2968789-2968789.jpg 600w, https:\/\/davidbolius.at\/wp-content\/uploads\/2021\/05\/Eiszeit-Temperatur-pexels-2968789-2968789-300x300.jpg 300w, https:\/\/davidbolius.at\/wp-content\/uploads\/2021\/05\/Eiszeit-Temperatur-pexels-2968789-2968789-150x150.jpg 150w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The question how much it was colder on earth during the last Ice Age is being re-opened. This question has preoccupied climate scientists for decades. Earlier estimates assumed that the&hellip;<\/p>\n","protected":false},"author":2,"featured_media":997,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"footnotes":""},"categories":[19],"tags":[],"class_list":["post-996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate-change"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Temperature during the last ice age - David Bolius<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/davidbolius.at\/en\/blog\/2021\/05\/15\/temperatur-ice-age\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Temperature during the last ice age - David Bolius\" \/>\n<meta property=\"og:description\" content=\"The question how much it was colder on earth during the last Ice Age is being re-opened. 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