{"id":416167,"date":"2022-03-15T00:17:55","date_gmt":"2022-03-14T21:17:55","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/fast-melting-alpine-permafrost-may-contribute-to-rising-global-temperatures\/"},"modified":"2022-03-15T00:17:55","modified_gmt":"2022-03-14T21:17:55","slug":"fast-melting-alpine-permafrost-may-contribute-to-rising-global-temperatures","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/fast-melting-alpine-permafrost-may-contribute-to-rising-global-temperatures\/","title":{"rendered":"#Fast-melting alpine permafrost may contribute to rising global temperatures"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a36ea3f5b064\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a36ea3f5b064\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/fast-melting-alpine-permafrost-may-contribute-to-rising-global-temperatures\/#%E2%80%9CFast-melting_alpine_permafrost_may_contribute_to_rising_global_temperatures%E2%80%9D\" >&#8220;Fast-melting alpine permafrost may contribute to rising global temperatures&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CFast-melting_alpine_permafrost_may_contribute_to_rising_global_temperatures%E2%80%9D\"><\/span>&#8220;Fast-melting alpine permafrost may contribute to rising global temperatures&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/fast-melting-alpine-pe.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/fast-melting-alpine-pe.jpg\" data-sub-html=\"The team's research area included the northern Tibetan plateau, pictured here. Much of the ground in this area is soil that remains frozen throughout the year, called permafrost. Credit: Feng Cheng\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/fast-melting-alpine-pe.jpg\" alt=\"Fast-melting alpine permafrost may contribute to rising global temperatures\" title=\"The team's research area included the northern Tibetan plateau, pictured here. Much of the ground in this area is soil that remains frozen throughout the year, called permafrost. Credit: Feng Cheng\" width=\"800\" height=\"403\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                The team&#8217;s research area included the northern Tibetan plateau, pictured here. Much of the ground in this area is soil that remains frozen throughout the year, called permafrost. Credit: Feng Cheng<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>From the ancient sludge of lakebeds in Asia&#8217;s Tibetan Plateau, scientists can decipher a vision of Earth&#8217;s future. That future, it turns out, will look very similar to the mid-Pliocene warm period\u2014an epoch 3.3 million to 3 million years ago when the average air temperature at mid-latitudes rarely dropped below freezing. It was a time when permanent ice was just beginning to cling to the northern polar regions, and mid-latitude alpine permafrost\u2014or perpetually frozen soil\u2014was much more limited than today.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>Global permafrost today contains a whopping 1,500 trillion grams of carbon. That&#8217;s twice as much as what&#8217;s stored in the atmosphere. Alpine permafrost, which is found closer to the equator at high elevations, isn&#8217;t as well studied as arctic permafrost but contains 85 trillion grams of carbon. When melted, it can release carbon dioxide and methane\u2014greenhouse gases that influence global temperature.<\/p>\n<p>Alpine permafrost is expected to melt at a faster rate than arctic permafrost under current global warming conditions, according to new research published in <i>Nature Communications<\/i>, and this may contribute even more to rising global temperatures.<\/p>\n<p>&#8220;Atmospheric carbon dioxide concentrations today are similar, or maybe even higher, than the mid-Pliocene because of the burning of fossil fuels, and so scientists point at that time period as an analog for our current and near-future climate,&#8221; said paper co-author Carmala Garzione, dean of the University of Arizona College of <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a>. &#8220;We&#8217;re not feeling the full effects of the rise in atmospheric carbon dioxide yet because our Earth system takes time to adjust.&#8221;<\/p>\n<p>&#8220;We wanted to estimate the stability of modern permafrost globally in a warmer-than-today climate scenario,&#8221; said Feng Cheng, the paper&#8217;s lead author and a professor at Peking University in China. Cheng formerly worked with Garzione as a postdoctoral fellow. &#8220;Our findings were very surprising and highlight the fact that we need to put more effort into monitoring the stability of the permafrost in the alpine region.&#8221;<\/p>\n<p>The team used carbonate\u2014a family of minerals\u2014that formed in a Tibetan Plateau lake to estimate temperatures during the Pliocene period (5.3 to 2.6 million years ago) and the Pleistocene period (between 2.6 million and 11,700 years ago). When algae grows in lakes, it absorbs carbon dioxide from the water and, as a result, decreases lake acidity. That decrease drives the lake to form finely grained carbonate minerals that settle at the lake bottom. The atoms in that carbonate reflect the temperature at which the carbonate formed, and can be used like a time-<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/trip-and-travel\/\" data-internallinksmanager029f6b8e52c=\"10\" title=\"Trip &amp; Travel\" target=\"_blank\" rel=\"noopener\">travel<\/a>ing thermometer.<\/p>\n<p>The Tibetan Plateau, which sits at an elevation over 15,400 feet, is the largest alpine permafrost region on Earth, but others can be found in the Mongolian Plateau in central Asia, the Canadian and American Rocky Mountains, the southern stretches of the Andes, and other mountain ranges worldwide at elevations where the air temperature is consistently below freezing.<\/p>\n<p>The team also modeled the paleoclimate on Earth during the Pliocene. They found that not only was the average temperature of much of the Tibetan Plateau above freezing in the Pliocene, but the same was true for many of the alpine regions across the globe.<\/p>\n<p>Ultimately, the modeling suggests that under current levels of atmospheric carbon dioxide, 20% of arctic permafrost land area and 60% of alpine permafrost land area will be lost in the future. High altitude alpine regions are more sensitive than high latitude arctic regions to warming under higher atmospheric carbon dioxide conditions.<\/p>\n<p>&#8220;The Pliocene is an important period as an ancient analog for how Earth will adjust to the carbon dioxide that humans have already released to the atmosphere,&#8221; Garzione said. &#8220;We need better and broader studies of the vulnerability of alpine regions under global warming scenarios. There&#8217;s been a lot of focus on the stability of arctic permafrost, because it covers more land area and contains a huge reservoir of organic carbon tr<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>ed in permafrost, but we also need to be aware that alpine regions stand to lose more permafrost proportionally and are important in understanding of potential carbon release under global warming scenarios.&#8221;<\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            Permafrost carbon loss reduces microbial stability\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Feng Cheng et al, Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue, <i>Nature Communications<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"http:\/\/dx.doi.org\/10.1038\/s41467-022-29011-2\">DOI: 10.1038\/s41467-022-29011-2<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    University of Arizona<br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.arizona.edu\/\"><br \/>\n                                                        <svg>\n                                                            <use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n                                                        <\/svg><br \/>\n                                                    <\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Fast-melting alpine permafrost may contribute to rising global temperatures (2022, March 14)<br \/>\n                                                 retrieved 14 March 2022<br \/>\n                                                 from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-03-fast-melting-alpine-permafrost-contribute-global.html<\/p>\n<p>                                            This document is subject to copyright. 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Much of the ground in this area is soil that remains frozen throughout the year, called permafrost. Credit: Feng Cheng From the ancient sludge of lakebeds in Asia&#8217;s Tibetan Plateau, scientists can decipher a vision&#8230;<\/p>\n","protected":false},"author":1,"featured_media":416168,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/fast-melting-alpine-pe.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-416167","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/416167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=416167"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/416167\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/416168"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=416167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=416167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=416167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}