Nature, 29 January 2025<\/p>\n
The largest source of uncertainty in the rate and extent of sea-level rise with high emissions is the fate and stability of the West Antarctic Ice Sheet. Understanding how this region reacts to higher temperatures is critical for predicting future sea-level rise. In this study, researchers used ice core records to measure how West Antarctica was affected by increased global temperatures 125,000 years ago, during the Last Inter-Glacial (LIG), when polar regions were about 3\u00b0C warmer than pre-industrial, with global sea levels up to 10 meters higher than today. They discovered that the West Antarctic Ice Sheet shrunk to roughly half of its modern-day mass during this period; and that the Ronne Ice Shelf, which supports inland glaciers in West Antarctica, survived this past period of warming. These findings suggest that West Antarctica, which holds total about 4 meters sea-level rise, could not have been the only significant source of higher sea levels during this period, indicating that Greenland and\/or East Antarctica (the only other regions with this much ice) must have lost mass during the Last Interglacial as well.<\/p>\n
These important findings help improve forecasts of what could happen to ice sheets as Earth’s climate warms. A presentation by the authors will be recorded and shared here in next week’s Capsules.<\/p>\n
\u5168\u6587 https:\/\/www.nature.com\/articles\/s41586-024-08394-w<\/a> Nature, 29 January 2025 The largest source of uncertainty in the rate and extent of sea-level rise with high emissions is the fate and stability of the West Antarctic Ice Sheet. Understanding how this region reacts to higher temperatures is critical for predicting future sea-level rise. In this study, researchers used ice core records to […]\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"no","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[152],"tags":[],"class_list":["post-6489","post","type-post","status-publish","format-standard","hentry","category-cryosphere-capsules"],"modified_by":"Pam Pearson","_links":{"self":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts\/6489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/comments?post=6489"}],"version-history":[{"count":2,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts\/6489\/revisions"}],"predecessor-version":[{"id":6491,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/posts\/6489\/revisions\/6491"}],"wp:attachment":[{"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/media?parent=6489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/categories?post=6489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iccinet.org\/zh\/wp-json\/wp\/v2\/tags?post=6489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nCoverage by the British Antarctic Survey: https:\/\/www.bas.ac.uk\/media-post\/ancient-antarctic-ice-loss-offers-insights-into-future-climate-scenarios\/<\/a><\/p>","protected":false},"excerpt":{"rendered":"