{"id":415331,"date":"2022-03-12T18:20:01","date_gmt":"2022-03-12T15:20:01","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/amazon-nears-climate-tipping-point-faster-than-expected\/"},"modified":"2022-03-12T18:20:01","modified_gmt":"2022-03-12T15:20:01","slug":"amazon-nears-climate-tipping-point-faster-than-expected","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/amazon-nears-climate-tipping-point-faster-than-expected\/","title":{"rendered":"#Amazon nears climate &#8216;tipping point&#8217; faster than expected"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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-6a25d972a2975\" 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-6a25d972a2975\" 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\/amazon-nears-climate-tipping-point-faster-than-expected\/#%E2%80%9CAmazon_nears_climate_%E2%80%98tipping_point_faster_than_expected%E2%80%9D\" >&#8220;Amazon nears climate &#8216;tipping point&#8217; faster than expected&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CAmazon_nears_climate_%E2%80%98tipping_point_faster_than_expected%E2%80%9D\"><\/span>&#8220;Amazon nears climate &#8216;tipping point&#8217; faster than expected&#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\/quotsavannificationquo-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/quotsavannificationquo-1.jpg\" data-sub-html=\"&quot;Savannification&quot; of the Amazon would be hugely disruptive, in South America and across the globe.\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/quotsavannificationquo-1.jpg\" alt=\"&amp;quot;Savannification&amp;quot; of the Amazon would be hugely disruptive, in South America and across the globe\" title=\"&quot;Savannification&quot; of the Amazon would be hugely disruptive, in South America and across the globe.\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                &#8220;Savannification&#8221; of the Amazon would be hugely disruptive, in South America and across the globe.<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Hammered by climate change and relentless deforestation, the Amazon rainforest is losing its capacity to recover and could irretrievably transition into savannah, with dire consequences for the region and the world, according to a study published Monday.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>Researchers warned that the results mean the Amazon could be <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>roaching a so-called &#8220;tipping point&#8221; faster than previously understood.   <\/p>\n<p>Analysing 25 years of satellite data, researchers measured for the first time the Amazon&#8217;s resilience against shocks such as droughts and fires, a key indicator of overall health.<\/p>\n<p>This has declined across more than three-quarters of the Amazon basin, home to half the world&#8217;s rainforest, they reported in <i>Nature Climate Change<\/i>.<\/p>\n<p>In areas hit hardest by destruction or drought, the forest&#8217;s ability to bounce back was reduced by approximately half, co-author Tim Lenton, director of the University of Exeter&#8217;s Global Systems Institute, told AFP.<\/p>\n<p>&#8220;Our resilience measure changed by more than a factor of two in the places nearer to human activity and in places that are driest,&#8221; he said in an interview.  <\/p>\n<p>Climate models have suggested that global heating\u2014which has on average warmed Earth&#8217;s surface 1.1 degrees Celsius above preindustrial levels\u2014could by itself push the Amazon past a point of no return into a far drier savannah-like state.<\/p>\n<p>If carbon pollution continues unabated, that scenario could be locked in by mid-century, according to some models.<\/p>\n<p>&#8220;But of course it&#8217;s not just climate change\u2014people are busy chopping or burning the forest down, which is a second pressure point,&#8221; said Lenton.<\/p>\n<p>&#8220;Those two things interact, so there are concerns the transition could happen even earlier.&#8221;<\/p>\n<p>Besides the Amazon, ice sheets on Greenland and the West Antarctic, Siberian permafrost loaded with CO<sub>2<\/sub> and methane, monsoon rains in South Asia, coral reef ecosystems, and the Atlantic ocean current are all are vulnerable to tipping points that could radically alter the world as we know it.<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/deforestation-in-brazi-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/deforestation-in-brazi-1.jpg\" data-sub-html=\"Deforestation in Brazil has surged since far-right President Jair Bolsonaro took office in 2019, hitting a 15-year high last year.\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/deforestation-in-brazi-1.jpg\" alt=\"Deforestation in Brazil has surged since far-right President Jair Bolsonaro took office in 2019, hitting a 15-year high last yea\" title=\"Deforestation in Brazil has surged since far-right President Jair Bolsonaro took office in 2019, hitting a 15-year high last year.\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                Deforestation in Brazil has surged since far-right President Jair Bolsonaro took office in 2019, hitting a 15-year high last year.<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p><b>Global fallout<\/b><\/p>\n<p>Deforestation in Brazil has surged since far-right President Jair Bolsonaro took office in 2019, hitting a 15-year high last year.<\/p>\n<p>Scientists reported recently that Brazil&#8217;s rainforest\u201460 percent of the Amazon basin&#8217;s total\u2014has shifted from a &#8220;sink&#8221; to a &#8220;source&#8221; of CO<sub>2<\/sub>, releasing 20 percent more of the greenhouse gas into the atmosphere over the last decade than it absorbed.<\/p>\n<p>Terrestrial ecosystems worldwide have been a crucial ally as the world struggles to curb CO<sub>2<\/sub> emissions. Vegetation and soil globally have consistently absorbed about 30 percent of carbon pollution since 1960, even as emissions increased by half. <\/p>\n<p>&#8220;Savannification&#8221; of the Amazon would be hugely disruptive, in South America and across the globe. <\/p>\n<p>Some 90 billion tonnes of CO<sub>2<\/sub> stored in its rainforest\u2014twice worldwide annual emissions from all sources\u2014could be released into the atmosphere, pushing global temperatures up even faster.<\/p>\n<p>Regionally, &#8220;it&#8217;s not just the forests that take a hit&#8221;, said Lenton. &#8220;If you lose the recycling of rainfall from the Amazon, you get knock-on effects in central Brazil, the country&#8217;s agricultural heartland.&#8221;<\/p>\n<p>Ominously, the new findings marshall data pointing in the same direction.<\/p>\n<p>&#8220;Many researchers have theorised that a tipping point could be reached,&#8221; said co-author Niklas Boers, a professor at the Potsdam Institute for Climate Impact Research in Germany. <\/p>\n<p>&#8220;Our study provides vital empirical evidence that we are approaching that threshold.&#8221;<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/the-amazon-basin-in-ho-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/the-amazon-basin-in-ho-1.jpg\" data-sub-html=\"The Amazon basin in home to half the world's rainforest.\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/the-amazon-basin-in-ho-1.jpg\" alt=\"The Amazon basin in home to half the world's rainforest\" title=\"The Amazon basin in home to half the world's rainforest.\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                The Amazon basin in home to half the world&#8217;s rainforest.<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p><b>When you&#8217;re sure, it&#8217;s too late<\/b><\/p>\n<p>To assess change in the resilience of the rainforest, Lenton, Boers and lead author Chris Boulton from Exeter University analysed two satellite data sets, one measuring biomass and the other the &#8220;greenness&#8221; of the canopy.<\/p>\n<p>&#8220;If too much resilience is lost, dieback may become inevitable\u2014but that won&#8217;t become obvious until the major event that tips the system is over,&#8221; said Boers.<\/p>\n<p>There may be a &#8220;saving grace&#8221; that could pull the Amazon back from the brink.<\/p>\n<p>&#8220;The rainforest naturally has a lot of resilience\u2014this is a biome that weathered the ice ages, after all,&#8221; said Lenton.<\/p>\n<p>&#8220;If you could bring the temperature back down again even after passing the tipping point, you might be able to rescue the situation.&#8221;<\/p>\n<p>&#8220;But that still puts you in the realm of massive carbon dioxide removal, or geoengineering, which has its own risks.&#8221;<\/p>\n<p>Just under 20 percent of the Amazon rainforest\u2014straddling nine nations and covering more than five million square kilometres (two million square miles)\u2014has been destroyed or degraded since 1970, mostly for the production of lumber, soy, palm oil, biofuels and beef.<\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            75% of Amazon rainforest shows signs of loss, a &#8216;tipping point&#8217; of dieback, study shows\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Chris A. Boulton et al, Pronounced loss of Amazon rainforest resilience since the early 2000s, <i>Nature Climate Change<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"http:\/\/dx.doi.org\/10.1038\/s41558-022-01287-8\">DOI: 10.1038\/s41558-022-01287-8<\/a><\/p><\/div>\n<p class=\"article-main__note mt-4\">\n                                                \u00a9 2022 AFP<\/p>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Amazon nears climate &#8216;tipping point&#8217; faster than expected (2022, March 12)<br \/>\n                                                 retrieved 12 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-amazon-nears-climate-faster.html<\/p>\n<p>                                            This document is subject to copyright. 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Hammered by climate change and relentless deforestation, the Amazon rainforest is losing its capacity to recover and could irretrievably transition into savannah, with dire consequences for the region and the world, according&#8230;<\/p>\n","protected":false},"author":1,"featured_media":415332,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/quotsavannificationquo-1.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-415331","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\/415331","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=415331"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/415331\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/415332"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=415331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=415331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=415331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}