{"id":432789,"date":"2026-03-20T18:59:52","date_gmt":"2026-03-20T17:59:52","guid":{"rendered":"https:\/\/climatescience.press\/?p=432789"},"modified":"2026-03-20T18:59:54","modified_gmt":"2026-03-20T17:59:54","slug":"ocean-temperatures-not-co%e2%82%82-drove-key-ancient-climate-shifts-ice-cores-show","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=432789","title":{"rendered":"Ocean Temperatures, Not CO\u2082, Drove Key Ancient Climate Shifts, Ice Cores Show"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"687\" height=\"1024\" data-attachment-id=\"432790\" data-permalink=\"https:\/\/climatescience.press\/?attachment_id=432790\" data-orig-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?fit=784%2C1168&amp;ssl=1\" data-orig-size=\"784,1168\" 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=\"0 ices cores\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?fit=687%2C1024&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?resize=687%2C1024&#038;ssl=1\" alt=\"\" class=\"wp-image-432790\" srcset=\"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?resize=687%2C1024&amp;ssl=1 687w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?resize=201%2C300&amp;ssl=1 201w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?resize=768%2C1144&amp;ssl=1 768w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?resize=640%2C953&amp;ssl=1 640w, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?w=784&amp;ssl=1 784w\" sizes=\"auto, (max-width: 687px) 100vw, 687px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Researchers analyzed ancient, disrupted Antarctic ice cores from the Allan Hills blue ice area to reconstruct Earth&#8217;s climate drivers over the past ~3 million years, extending records farther back than traditional continuous cores.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Key findings from the research:<\/em><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Over long timescales, Earth&#8217;s climate has undergone major shifts, including the onset of Northern Hemisphere glaciation ~2.6 million years ago (with ~40,000-year glacial-interglacial cycles) and the Mid-Pleistocene Transition (MPT) ~1 million years ago (shifting to ~100,000-year cycles with larger ice sheets).<\/li>\n\n\n\n<li>Traditional views emphasize greenhouse gases (like CO\u2082) as a primary driver of these changes, often in feedback loops with orbital variations (Milankovitch cycles), ice-sheet dynamics, and other factors.<\/li>\n\n\n\n<li>However, the new ice core data (including disrupted, non-chronological layers from old Antarctic sites) suggest that at certain key transition points, changes in ocean temperatures and circulation may have played a larger role than fluctuations in greenhouse gases in driving major climate reorganizations.<\/li>\n\n\n\n<li>Atmospheric CO\u2082 levels appear to have remained relatively stable and modest (long-term averages below ~300 ppm, with only slight declines over millions of years), yet significant cooling and ice-sheet changes occurred. This implies other factors\u2014like ocean heat distribution, circulation changes, or ice-sheet sensitivity\u2014were crucial drivers during those periods.<\/li>\n\n\n\n<li>A commentary in Nature by climatologist Eric Wolff notes this could mean ice sheets were extremely sensitive to small CO\u2082 changes, or that &#8220;something else&#8221; (beyond greenhouse gases) drove past climate shifts in ways not fully captured by current models.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This doesn&#8217;t overturn the well-established role of greenhouse gases in past glacial-interglacial cycles (where temperature and CO\u2082 often tracked closely, with CO\u2082 acting as a feedback amplifier) or in modern human-driven warming (where CO\u2082 levels now far exceed natural prehistoric ranges due to fossil fuel emissions).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Instead, it highlights the complexity of the climate system: multiple factors interact, and ocean dynamics may have been more dominant during specific ancient transitions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For context, ice cores remain one of our best archives for past atmospheres (trapping air bubbles) and temperatures (via water isotopes), but interpreting very old, disturbed cores involves challenges like dating and layering disruptions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Allan Hills cores (some dating back even ~6 million years, exposed by winds) act as time capsules via air bubbles and isotopes\u2014extending our view of pre-human climate. This helps test models for how the planet responded to past forcings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">_____________________________________________________________________________________<\/p>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>Something Else Used to Drive Climate Changes, Ancient Ice Cores Reveal<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<a href=\"https:\/\/www.sciencealert.com\/first-signal-of-climate-change-became-detectable-130-years-ago\">rapid climate change<\/a>&nbsp;we are experiencing today is mainly driven by the&nbsp;<a href=\"https:\/\/www.sciencealert.com\/greenhouse-emissions-threaten-the-future-of-low-earth-orbit-scientists-warn\">greenhouse gases<\/a>&nbsp;we humans keep releasing into the air.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But new evidence from ancient Antarctic ice cores suggests this wasn&#8217;t always the case for the past three million years of Earth&#8217;s changing climate. <strong><em><a href=\"https:\/\/www.sciencealert.com\/something-else-used-to-drive-climate-changes-ancient-ice-cores-reveal\">ScienceAlert<\/a> has the story.<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to the findings of two new papers published in&nbsp;<em>Nature,&nbsp;<\/em>at certain transition points ocean temperatures could have had a greater influence over Earth&#8217;s climate than greenhouse gases.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Two research teams analyzed ice cores extracted from the Allan Hills, a blue ice region of Antarctica. The&nbsp;<a href=\"https:\/\/coldex.org\/ice-core-information\">Allan Hills cores<\/a>&nbsp;are samples of some of the world&#8217;s oldest ice, with some dating as far back as&nbsp;<a href=\"https:\/\/www.sciencealert.com\/oldest-air-ever-measured-found-in-ice-from-6-million-years-ago\">6 million years ago<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Blue ice areas like the Allan Hills make up only about&nbsp;<a href=\"https:\/\/www.pnas.org\/post\/podcast\/secrets-earth-s-climate-six-million-year-old-ice\">1 percent of the surface area<\/a>&nbsp;of Antarctica&#8217;s ice sheet, and they&#8217;re named as such because strong winds blow away any new snow, keeping older, glacial ice exposed at the surface.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Allan Hills region hasn&#8217;t moved horizontally or vertically very much at all, making it a particularly unique site for taking cores of very, very old ice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ice cores are some of our best&nbsp;<a href=\"https:\/\/www.sciencealert.com\/incredible-ice-core-captures-12000-years-of-european-climate-history\">natural &#8216;archives&#8217;<\/a>&nbsp;of Earth&#8217;s&nbsp;<a href=\"https:\/\/www.sciencealert.com\/oldest-unbroken-record-of-earths-climate-pulled-from-antarctic-ice-sheet\">long-term climate<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They don&#8217;t necessarily contain a complete, continuous record. The Allan Hills cores, for example, contain layers that are out of chronological order thanks to the way the ice was deposited across the millennia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But each layer of ice contains a climate snapshot that can tell us a lot about what was going on at the time of freezing, and there are ways of decoding their secrets.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Certain isotopes in the ice hint at ocean temperature. Impurities like volcanic ash and other particles can indicate&nbsp;<a href=\"https:\/\/www.sciencealert.com\/wildfires-surged-during-past-climate-shifts-ancient-antarctic-ice-reveals\">sources of air pollution<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And, perhaps most importantly to climate scientists, the ice can trap&nbsp;<a href=\"https:\/\/www.sciencealert.com\/plagues-from-centuries-ago-may-have-altered-earths-atmosphere\">tiny bubbles of the air<\/a>, revealing the historic gas composition of the atmosphere across millions of years.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Read the full story <a href=\"https:\/\/www.sciencealert.com\/something-else-used-to-drive-climate-changes-ancient-ice-cores-reveal\">here<\/a>.<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers analyzed ancient, disrupted Antarctic ice cores from the Allan Hills blue ice area to reconstruct Earth&#8217;s climate drivers over the past ~3 million years, extending records farther back than traditional continuous cores.<\/p>\n","protected":false},"author":121246920,"featured_media":432790,"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_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":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":[],"class_list":["post-432789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","fallback-thumbnail"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ices-cores.jpg?fit=784%2C1168&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1OAt","jetpack-related-posts":[{"id":446766,"url":"https:\/\/climatescience.press\/?p=446766","url_meta":{"origin":432789,"position":0},"title":"Ancient Antarctic Dust Reveals Major Retreat of Ross Ice Shelf and West Antarctic Ice Sheet During Last Interglacial Warming","author":"uwe.roland.gross","date":"05\/27\/2026","format":false,"excerpt":"The McMurdo Sound sector of the West Antarctic Rift System (WARS) served as the primary local volcanic dust source during the Last Interglacial (MIS 5e) in the Allan Hills ice core records.","rel":"","context":"In \"Allan Hills Blue Ice Area\"","block_context":{"text":"Allan Hills Blue Ice Area","link":"https:\/\/climatescience.press\/?tag=allan-hills-blue-ice-area"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Ancient-Antarctic-Dust-Reveals-Major-Retreat-of-Ross-Ice-Shelf-and-West-Antarctic-Ice-Sheet-During-Last-Interglacial-Warming.jpg?fit=1168%2C784&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Ancient-Antarctic-Dust-Reveals-Major-Retreat-of-Ross-Ice-Shelf-and-West-Antarctic-Ice-Sheet-During-Last-Interglacial-Warming.jpg?fit=1168%2C784&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Ancient-Antarctic-Dust-Reveals-Major-Retreat-of-Ross-Ice-Shelf-and-West-Antarctic-Ice-Sheet-During-Last-Interglacial-Warming.jpg?fit=1168%2C784&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Ancient-Antarctic-Dust-Reveals-Major-Retreat-of-Ross-Ice-Shelf-and-West-Antarctic-Ice-Sheet-During-Last-Interglacial-Warming.jpg?fit=1168%2C784&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-Ancient-Antarctic-Dust-Reveals-Major-Retreat-of-Ross-Ice-Shelf-and-West-Antarctic-Ice-Sheet-During-Last-Interglacial-Warming.jpg?fit=1168%2C784&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":439916,"url":"https:\/\/climatescience.press\/?p=439916","url_meta":{"origin":432789,"position":1},"title":"Rapid Natural Warming Spikes Occurred 25 Times \u2014 Last Ice Age Edition","author":"uwe.roland.gross","date":"04\/16\/2026","format":false,"excerpt":"Abrupt climate change occurred naturally many times during the last ice age (the last glacial period, roughly 115,000 to 11,700 years ago). Paleoclimate records, especially from Greenland ice cores, document at least 25 major rapid warming-cooling oscillations known as Dansgaard-Oeschger (D-O) events.","rel":"","context":"In \"abrupt climate change\"","block_context":{"text":"abrupt climate change","link":"https:\/\/climatescience.press\/?tag=abrupt-climate-change"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Rapid-Natural-Warming-Spikes-Occurred-25-Times-%E2%80%94-Last-Ice-Age-Edition1.jpg?fit=784%2C1168&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Rapid-Natural-Warming-Spikes-Occurred-25-Times-%E2%80%94-Last-Ice-Age-Edition1.jpg?fit=784%2C1168&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Rapid-Natural-Warming-Spikes-Occurred-25-Times-%E2%80%94-Last-Ice-Age-Edition1.jpg?fit=784%2C1168&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/04\/0-Rapid-Natural-Warming-Spikes-Occurred-25-Times-%E2%80%94-Last-Ice-Age-Edition1.jpg?fit=784%2C1168&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":444272,"url":"https:\/\/climatescience.press\/?p=444272","url_meta":{"origin":432789,"position":2},"title":"2.8-km Antarctic Ice Core Yields 1.2 Million Years of Continuous Climate History","author":"uwe.roland.gross","date":"05\/14\/2026","format":false,"excerpt":"The Beyond EPICA \u2013 Oldest Ice project (a European collaboration) drilled a 2.8 km (about 1.7 miles) ice core at Little Dome C in East Antarctica, reaching bedrock. It provides the longest continuous record of Earth's climate and atmospheric composition yet recovered, extending back at least 1.2 million years (with\u2026","rel":"","context":"In \"1.2 million years\"","block_context":{"text":"1.2 million years","link":"https:\/\/climatescience.press\/?tag=1-2-million-years"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-2.8-km-Antarctic-Ice-Core-Yields-1.2-Million-Years-of-Continuous-Climate-History.jpg?fit=784%2C1168&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-2.8-km-Antarctic-Ice-Core-Yields-1.2-Million-Years-of-Continuous-Climate-History.jpg?fit=784%2C1168&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-2.8-km-Antarctic-Ice-Core-Yields-1.2-Million-Years-of-Continuous-Climate-History.jpg?fit=784%2C1168&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/0-2.8-km-Antarctic-Ice-Core-Yields-1.2-Million-Years-of-Continuous-Climate-History.jpg?fit=784%2C1168&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":447125,"url":"https:\/\/climatescience.press\/?p=447125","url_meta":{"origin":432789,"position":3},"title":"Warmer Antarctic Regions Amplify Temperature Shifts More Than Colder Interiors \u2013 Due to Temperature-Dependent Greenhouse Feedbacks","author":"uwe.roland.gross","date":"05\/28\/2026","format":false,"excerpt":"A recent study highlights how a bare supercontinent like Rodinia, positioned mostly in the tropics around 700\u2013600 million years ago, could have helped trigger or amplify \"Snowball Earth\" glaciations during the Neoproterozoic era.","rel":"","context":"In \"Bare rock albedo\"","block_context":{"text":"Bare rock albedo","link":"https:\/\/climatescience.press\/?tag=bare-rock-albedo"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/AQNiqWMs0giBt0mmee1CATTWhxTPN3cn6icerpGwAErKYuQdxzZYgH8mswe6XT16NOyimhj66_fIkdoDssrtbBiCQlim3YoaSQ0WD8ENgtwwE21G879HDA4VuCtnFzF_.jpeg?fit=1200%2C822&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/AQNiqWMs0giBt0mmee1CATTWhxTPN3cn6icerpGwAErKYuQdxzZYgH8mswe6XT16NOyimhj66_fIkdoDssrtbBiCQlim3YoaSQ0WD8ENgtwwE21G879HDA4VuCtnFzF_.jpeg?fit=1200%2C822&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/AQNiqWMs0giBt0mmee1CATTWhxTPN3cn6icerpGwAErKYuQdxzZYgH8mswe6XT16NOyimhj66_fIkdoDssrtbBiCQlim3YoaSQ0WD8ENgtwwE21G879HDA4VuCtnFzF_.jpeg?fit=1200%2C822&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/AQNiqWMs0giBt0mmee1CATTWhxTPN3cn6icerpGwAErKYuQdxzZYgH8mswe6XT16NOyimhj66_fIkdoDssrtbBiCQlim3YoaSQ0WD8ENgtwwE21G879HDA4VuCtnFzF_.jpeg?fit=1200%2C822&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/05\/AQNiqWMs0giBt0mmee1CATTWhxTPN3cn6icerpGwAErKYuQdxzZYgH8mswe6XT16NOyimhj66_fIkdoDssrtbBiCQlim3YoaSQ0WD8ENgtwwE21G879HDA4VuCtnFzF_.jpeg?fit=1200%2C822&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":434211,"url":"https:\/\/climatescience.press\/?p=434211","url_meta":{"origin":432789,"position":4},"title":"Shock New Evidence Showing No Link Between CO2 and Temperature Over Last Three Million Years Stumps Net Zero Activists","author":"uwe.roland.gross","date":"03\/26\/2026","format":false,"excerpt":"The climate science world (\u2018settled\u2019 division) is in shock following the discovery in ancient ice cores that levels of carbon dioxide remained stable as the world plunged into an ice age around 2.7 million years ago. Levels of CO2 at around 250 parts per million (ppm) were said to be\u2026","rel":"","context":"In \"Antarctica\"","block_context":{"text":"Antarctica","link":"https:\/\/climatescience.press\/?tag=antarctica"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ice-core-drilling-in-the-Antartic.jpg?fit=784%2C1168&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ice-core-drilling-in-the-Antartic.jpg?fit=784%2C1168&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ice-core-drilling-in-the-Antartic.jpg?fit=784%2C1168&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/03\/0-ice-core-drilling-in-the-Antartic.jpg?fit=784%2C1168&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":269977,"url":"https:\/\/climatescience.press\/?p=269977","url_meta":{"origin":432789,"position":5},"title":"Antarctic Sea Ice Varies, It\u2019s\u00a0Complicated","author":"uwe.roland.gross","date":"07\/28\/2023","format":false,"excerpt":"Sea ice around Antarctica is affected by a host of complex factors, including shifts in ocean currents and sea and air temperatures.","rel":"","context":"In \"Antarctic sea ice\"","block_context":{"text":"Antarctic sea ice","link":"https:\/\/climatescience.press\/?tag=antarctic-sea-ice"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-869.png?fit=1200%2C794&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-869.png?fit=1200%2C794&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-869.png?fit=1200%2C794&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-869.png?fit=1200%2C794&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/image-869.png?fit=1200%2C794&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/432789","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=432789"}],"version-history":[{"count":9,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/432789\/revisions"}],"predecessor-version":[{"id":432799,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/posts\/432789\/revisions\/432799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=\/wp\/v2\/media\/432790"}],"wp:attachment":[{"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=432789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=432789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/climatescience.press\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=432789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}