{"id":60731,"date":"2025-12-05T18:51:53","date_gmt":"2025-12-05T13:21:53","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=60731"},"modified":"2025-12-06T12:37:47","modified_gmt":"2025-12-06T07:07:47","slug":"antarctic-ozone-hole-closes","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/05-12-2025\/antarctic-ozone-hole-closes","title":{"rendered":"Antarctic Ozone Hole Closes Early in 2025"},"content":{"rendered":"\n<p><strong>Syllabus: GS3\/Environment&nbsp;<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>In News<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Antarctic ozone hole that formed in August 2025 closed earlier than usual, offering hope for recovery amid record global warming.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is the Ozone Hole?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It is a seasonal thinning of the stratospheric ozone layer particularly in the southern polar region \u2014 was first discovered in 1985.<\/li>\n\n\n\n<li>The ozone hole is not technically a \u201chole\u201d where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic .<\/li>\n\n\n\n<li>It happens at the beginning of the Southern Hemisphere spring (August\u2013October).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Causes<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chlorofluorocarbons (CFCs), halons, and other ozone-depleting substances (ODS): <\/strong>These chemicals, once widely used in refrigeration, aerosols, and solvents, break down ozone molecules in the stratosphere.<\/li>\n\n\n\n<li><strong>Polar stratospheric clouds (PSCs)<\/strong> formed in extreme cold, they accelerate chemical reactions that destroy ozone.<\/li>\n\n\n\n<li><strong>Climate change interactions:<\/strong> Warming at the surface and cooling in the stratosphere can influence ozone depletion cycles.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Impacts<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Human health:<\/strong> Increased ultraviolet (UV-B) radiation leads to higher risks of skin cancer, cataracts, and weakened immune systems.<\/li>\n\n\n\n<li><strong>Ecosystems<\/strong>: UV radiation damages phytoplankton, the base of marine food chains, and affects crop yields.<\/li>\n\n\n\n<li><strong>Climate linkages<\/strong>: Ozone depletion alters atmospheric circulation, impacting weather patterns in the Southern Hemisphere.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Steps Taken<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Montreal Protocol (1987):<\/strong> It is&nbsp; a landmark global treaty banning ozone-depleting substances (ODS), credited with reducing ozone hole size.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.nextias.com\/ca\/current-affairs\/19-08-2021\/ratification-of-kigali-amendment-to-the-montreal-protocol\" data-type=\"link\" data-id=\"https:\/\/www.nextias.com\/ca\/current-affairs\/19-08-2021\/ratification-of-kigali-amendment-to-the-montreal-protocol\">Kigali Amendment (2016)<\/a> <\/strong>extended controls to hydrofluorocarbons (HFCs), potent greenhouse gases.<\/li>\n\n\n\n<li><strong>National efforts:<\/strong> Countries phased out CFCs in refrigeration and aerosols, promoting safer alternatives.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Way Ahead<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The ozone hole story is a rare example of successful global environmental action, demonstrating that coordinated efforts can reverse ecological damage.&nbsp;<\/li>\n\n\n\n<li>However, recovery remains fragile and requires ongoing vigilance.&nbsp;<\/li>\n\n\n\n<li>Continued enforcement of the Montreal Protocol, alignment with climate policies, and promotion of sustainable, eco-friendly technologies are essential to protect the ozone layer.&nbsp;<\/li>\n\n\n\n<li>With sustained global cooperation, scientists estimate full recovery could occur by 2060\u20132070.<\/li>\n<\/ul>\n\n\n\n<p><strong>Source :<\/strong><a href=\"https:\/\/www.downtoearth.org.in\/environment\/antarctic-ozone-hole-closes-early-in-2025-raising-hopes-for-long-term-recovery\" target=\"_blank\" rel=\"noopener\"><strong>DTE<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>In News<\/strong><\/p>\n<li class=\"ms-5\">The Antarctic ozone hole that formed in August 2025 closed earlier than usual, offering hope for recovery amid record global warming.<\/li>\n<p><\/p>\n<p><strong>What is the Ozone Hole?<\/strong><\/p>\n<li class=\"ms-5\">It is a seasonal thinning of the stratospheric ozone layer particularly in the southern polar region \u2014 was first discovered in 1985.<\/li>\n<li class=\"ms-5\">The ozone hole is not technically a \u201chole\u201d where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic.<\/li>\n<li class=\"ms-5\">It happens at the beginning of the Southern Hemisphere spring (August\u2013October).<\/li>\n<p><a href=\"https:\/\/www.nextias.com\/ca\/current-affairs\/05-12-2025\/antarctic-ozone-hole-closes\" class=\"btn btn-primary btn-sm float-end\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-60731","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/60731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=60731"}],"version-history":[{"count":4,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/60731\/revisions"}],"predecessor-version":[{"id":60821,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/60731\/revisions\/60821"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=60731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=60731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=60731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}