{"id":93512,"date":"2020-11-25T13:32:37","date_gmt":"2020-11-25T19:32:37","guid":{"rendered":"https:\/\/news.medill.northwestern.edu\/chicago\/?p=93512"},"modified":"2021-06-30T21:37:18","modified_gmt":"2021-07-01T02:37:18","slug":"breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting","status":"publish","type":"post","link":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/","title":{"rendered":"Breaking down climate change cluesfrom ocean floors to measure iceberg melting"},"content":{"rendered":"

By Grace Rodgers\u00a0<\/strong>
\nMedill Reports<\/em><\/p>\n

Melting freshwater icebergs raise critical questions about ocean circulation. However, to find answers to what\u2019s happening on ocean surfaces, some scientists are searching ocean floors for evidence of past environments and clues to the pace of current climate change.<\/p>\n

As a fifth-year Ph.D. student at Columbia University\u2019s Lamont-Doherty Earth Observatory, Yuxin Zhou\u2019s research focuses on the factors destabilizing the circulation in the North Atlantic, spanning the past 150,000 years. The majority of his findings are based on new and previously published measurements of long tubes of sediment cores collected from ocean floors in the North Atlantic.<\/p>\n

\u201cModel simulations can be a very powerful tool to narrow down the spread off of estimates we have on the freshwater fluxes,\u201d Zhou said.<\/p>\n

Prior to the pandemic, he spent long weekdays working at Lamont-Doherty in the Palisades near New York City. However, due to stay-at-home orders, he has been on campus for only three to four weeks in total since March.<\/p>\n

When Zhou does travel to the campus, entering the laboratory requires an extensive sanitation protocol. He must change into the appropriate lab attire, which includes long pants, long sleeves, closed-toed shoes, gloves, goggles, a mask, and a lab coat. After stepping onto a sticky mat to remove dust particles from his shoes, Zhou can enter the lab and begin working.<\/p>\n

Measuring 18 data points from one sediment core can take up to two weeks but provides key data on specific elements and isotopes within the sediment, and indicates the amount of freshwater released by melting icebergs during a certain period of time.<\/p>\n

To begin the measuring process, Zhou begins by removing a small portion of the sediment core and places the solid sediment into a heat-and acid-resistant container. He then uses heat and several types of acids, including hydrofluoric acid, to gradually dissolve the solid sediment into a liquid solution.<\/p>\n

\"Yuxin
While working in the Lamont-Doherty Earth Observatory laboratory, Zhou wears full personal protective equipment including a lab coat, face mask, goggles, and gloves. In the lab, Zhou works on various scientific processes including column chemistry (right). (Yuxin Zhou \/ Columbia University)<\/figcaption><\/figure>\n

Once a dissolved liquid, it\u2019s time to begin a chemical process called column chemistry, which filters and separates elements in the liquid. The chemical process results in a concentrated liquid containing three primary elements, which Zhou needs to measure the iceberg meltwater: thorium, protactinium, and uranium.<\/p>\n

Finally, the concentrated liquid is placed into a machine to test the concentration of each isotope. With conclusive measurements, Zhou can determine the amount and location of freshwater released by icebergs in the North Atlantic.<\/p>\n

The remainder of the sediment core is archived in the Lamont-Doherty\u2019s core repository, one of the largest such repositories in the world. With accessibility to decades of core sediments collected from around the world, Zhou hopes his new method will contribute to scientist\u2019s global efforts to predict and mitigate the effects of climate change.<\/p>\n

\u201cThe best minds in the world have been working on this for a very long time,\u201d Zhou said. \u201cThe scientists have nothing other than the best interest of science and the human society when they devote their careers to these questions about climate change.\u201d<\/p>\n

See related: Next generation climate scientists prepare for the future by studying past North Atlantic iceberg melting<\/a><\/strong><\/p>\n

 <\/p>\n

Grace Rodgers is health, environment and science reporters at Medill. You can follow her on Twitter at <\/i>@gracelizrodgers<\/a>.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"

By Grace Rodgers\u00a0 Medill Reports Melting freshwater icebergs raise critical questions about ocean circulation. However, to find answers to what\u2019s happening on ocean surfaces, some scientists are searching ocean floors for evidence of past environments and clues to the pace of current climate change. As a fifth-year Ph.D. student at Columbia University\u2019s Lamont-Doherty Earth Observatory, […]<\/p>\n","protected":false},"author":709,"featured_media":93539,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5045,28,29],"tags":[],"class_list":["post-93512","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fall-2020","category-general-interest","category-health-and-science"],"yoast_head":"\nBreaking down climate change cluesfrom ocean floors to measure iceberg melting - Medill Reports Chicago<\/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:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Breaking down climate change cluesfrom ocean floors to measure iceberg melting - Medill Reports Chicago\" \/>\n<meta property=\"og:description\" content=\"By Grace Rodgers\u00a0 Medill Reports Melting freshwater icebergs raise critical questions about ocean circulation. However, to find answers to what\u2019s happening on ocean surfaces, some scientists are searching ocean floors for evidence of past environments and clues to the pace of current climate change. As a fifth-year Ph.D. student at Columbia University\u2019s Lamont-Doherty Earth Observatory, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/\" \/>\n<meta property=\"og:site_name\" content=\"Medill Reports Chicago\" \/>\n<meta property=\"article:published_time\" content=\"2020-11-25T19:32:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-07-01T02:37:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1100\" \/>\n\t<meta property=\"og:image:height\" content=\"786\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"gracerodgers2021\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@gracelizrodgers\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"gracerodgers2021\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/\",\"url\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/\",\"name\":\"Breaking down climate change cluesfrom ocean floors to measure iceberg melting - Medill Reports Chicago\",\"isPartOf\":{\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg\",\"datePublished\":\"2020-11-25T19:32:37+00:00\",\"dateModified\":\"2021-07-01T02:37:18+00:00\",\"author\":{\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/#\/schema\/person\/895b3f87eacdac5b7927847b230e4ab6\"},\"breadcrumb\":{\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#primaryimage\",\"url\":\"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg\",\"contentUrl\":\"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg\",\"width\":1100,\"height\":786,\"caption\":\"While working as a summer student fellow for the Woods Hole Oceanographic Institution (WHOI), Zhou took a day trip aboard the R\/V Tioga coastal research vessel and learned how to use a net tow. (Yuxin Zhou\/Columbia University)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/news.medill.northwestern.edu\/chicago\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Breaking down climate change cluesfrom ocean floors to measure iceberg melting\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/#website\",\"url\":\"https:\/\/news.medill.northwestern.edu\/chicago\/\",\"name\":\"Medill Reports Chicago\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/news.medill.northwestern.edu\/chicago\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/#\/schema\/person\/895b3f87eacdac5b7927847b230e4ab6\",\"name\":\"gracerodgers2021\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/news.medill.northwestern.edu\/chicago\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/1f1e19ae9361aac82388a0b6b8f4bda4d1ecee0a3aa5e5492aa9156130a8502d?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/1f1e19ae9361aac82388a0b6b8f4bda4d1ecee0a3aa5e5492aa9156130a8502d?s=96&d=mm&r=g\",\"caption\":\"gracerodgers2021\"},\"description\":\"Hello! I'm Grace Rodgers, a graduate student and Comer Scholar at Northwestern University\u2019s Medill School of Journalism, specializing in health, science and environment. This past May, I (virtually) graduated from American University with a Bachelor of Arts in Journalism. As a multimedia-focused journalist, I cover breaking news and investigative reports focused on environmental health, science, and justice.\",\"sameAs\":[\"http:\/\/www.gracerodgers.com\",\"https:\/\/www.linkedin.com\/in\/gracerodgers\/\",\"https:\/\/x.com\/gracelizrodgers\"],\"url\":\"https:\/\/news.medill.northwestern.edu\/chicago\/author\/gracerodgers2021\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Breaking down climate change cluesfrom ocean floors to measure iceberg melting - Medill Reports Chicago","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/","og_locale":"en_US","og_type":"article","og_title":"Breaking down climate change cluesfrom ocean floors to measure iceberg melting - Medill Reports Chicago","og_description":"By Grace Rodgers\u00a0 Medill Reports Melting freshwater icebergs raise critical questions about ocean circulation. However, to find answers to what\u2019s happening on ocean surfaces, some scientists are searching ocean floors for evidence of past environments and clues to the pace of current climate change. As a fifth-year Ph.D. student at Columbia University\u2019s Lamont-Doherty Earth Observatory, […]","og_url":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/","og_site_name":"Medill Reports Chicago","article_published_time":"2020-11-25T19:32:37+00:00","article_modified_time":"2021-07-01T02:37:18+00:00","og_image":[{"width":1100,"height":786,"url":"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg","type":"image\/jpeg"}],"author":"gracerodgers2021","twitter_card":"summary_large_image","twitter_creator":"@gracelizrodgers","twitter_misc":{"Written by":"gracerodgers2021","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/","url":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/","name":"Breaking down climate change cluesfrom ocean floors to measure iceberg melting - Medill Reports Chicago","isPartOf":{"@id":"https:\/\/news.medill.northwestern.edu\/chicago\/#website"},"primaryImageOfPage":{"@id":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#primaryimage"},"image":{"@id":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#primaryimage"},"thumbnailUrl":"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg","datePublished":"2020-11-25T19:32:37+00:00","dateModified":"2021-07-01T02:37:18+00:00","author":{"@id":"https:\/\/news.medill.northwestern.edu\/chicago\/#\/schema\/person\/895b3f87eacdac5b7927847b230e4ab6"},"breadcrumb":{"@id":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#primaryimage","url":"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg","contentUrl":"https:\/\/s3.amazonaws.com\/medill.wordpress.offload\/wp-media-folder-medill-reports-chicago\/wp-content\/uploads\/sites\/3\/2020\/11\/7.jpg","width":1100,"height":786,"caption":"While working as a summer student fellow for the Woods Hole Oceanographic Institution (WHOI), Zhou took a day trip aboard the R\/V Tioga coastal research vessel and learned how to use a net tow. (Yuxin Zhou\/Columbia University)"},{"@type":"BreadcrumbList","@id":"https:\/\/news.medill.northwestern.edu\/chicago\/breaking-down-clues-to-climate-change-from-ocean-floors-to-measure-iceberg-melting\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/news.medill.northwestern.edu\/chicago\/"},{"@type":"ListItem","position":2,"name":"Breaking down climate change cluesfrom ocean floors to measure iceberg melting"}]},{"@type":"WebSite","@id":"https:\/\/news.medill.northwestern.edu\/chicago\/#website","url":"https:\/\/news.medill.northwestern.edu\/chicago\/","name":"Medill Reports Chicago","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/news.medill.northwestern.edu\/chicago\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/news.medill.northwestern.edu\/chicago\/#\/schema\/person\/895b3f87eacdac5b7927847b230e4ab6","name":"gracerodgers2021","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/news.medill.northwestern.edu\/chicago\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/1f1e19ae9361aac82388a0b6b8f4bda4d1ecee0a3aa5e5492aa9156130a8502d?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/1f1e19ae9361aac82388a0b6b8f4bda4d1ecee0a3aa5e5492aa9156130a8502d?s=96&d=mm&r=g","caption":"gracerodgers2021"},"description":"Hello! I'm Grace Rodgers, a graduate student and Comer Scholar at Northwestern University\u2019s Medill School of Journalism, specializing in health, science and environment. This past May, I (virtually) graduated from American University with a Bachelor of Arts in Journalism. As a multimedia-focused journalist, I cover breaking news and investigative reports focused on environmental health, science, and justice.","sameAs":["http:\/\/www.gracerodgers.com","https:\/\/www.linkedin.com\/in\/gracerodgers\/","https:\/\/x.com\/gracelizrodgers"],"url":"https:\/\/news.medill.northwestern.edu\/chicago\/author\/gracerodgers2021\/"}]}},"_links":{"self":[{"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/posts\/93512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/users\/709"}],"replies":[{"embeddable":true,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/comments?post=93512"}],"version-history":[{"count":16,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/posts\/93512\/revisions"}],"predecessor-version":[{"id":97046,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/posts\/93512\/revisions\/97046"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/media\/93539"}],"wp:attachment":[{"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/media?parent=93512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/categories?post=93512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.medill.northwestern.edu\/chicago\/wp-json\/wp\/v2\/tags?post=93512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}