{"id":12836,"date":"2023-01-11T23:00:00","date_gmt":"2023-01-11T23:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/benin\/?p=12836"},"modified":"2023-01-11T23:00:00","modified_gmt":"2023-01-11T23:00:00","slug":"le-trou-dans-la-couche-dozone-pourrait-se-fermer-dici-50-ans","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/le-trou-dans-la-couche-dozone-pourrait-se-fermer-dici-50-ans","title":{"rendered":"Le trou dans la couche d\u2019ozone pourrait se fermer d\u2019ici 50 ans"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Benin. <\/strong><\/span><b>Un rapport de l\u2019ONU note une progression de l\u2019ozone dans l\u2019atmosphe\u0300re. Un symbole d\u2019espoir dans la lutte contre le re\u0301chauffement climatique.<\/b><\/p>\n<p>La couche d\u2019ozone est une fine barrie\u0300re de gaz qui prote\u0300ge la Terre des rayons du Soleil. A\u0300 cause de la re\u0301cente activite\u0301 humaine, un trou a pris place au niveau du po\u0302le Sud entrai\u0302nant des cancers de la peau par millions.<\/p>\n<p>Mais selon un nouveau rapport des Nations Unies, la situation n\u2019est pas aussi catastrophique qu\u2019elle en a l\u2019air. En effet, gra\u0302ce aux efforts en faveur de la lutte pour le climat, le trou dans la couche d\u2019ozone pourrait se refermer comple\u0300tement d\u2019ici 43 ans.<\/p>\n<p><b>Une nouvelle encourageante pour la plane\u0300te<\/b><\/p>\n<p>Paul Newman, co-pre\u0301sident de cette e\u0301tude s\u2019est fe\u0301licite\u0301 de la re\u0301cente e\u0301volution des choses. Mais les scientifiques restent tre\u0300s prudents, car le moindre changement dans l\u2019activite\u0301 humaine pourrait avoir de graves conse\u0301quences. Si la couche d\u2019ozone, e\u0301paisse d\u2019une trentaine de kilome\u0300tres, commence a\u0300 se re\u0301parer, elle demeure tre\u0300s fragile.<\/p>\n<p>Le rapport, pre\u0301sente\u0301 ce lundi devant la convention de l\u2019American Meteorological Society a\u0300 Denver aux E\u0301tats-Unis, de\u0301peint une lente progression de l\u2019ozone et un retour a\u0300 la normale au niveau des anne\u0301es 2040 dans l\u2019he\u0301misphe\u0300re nord et 2065 pour le po\u0302le Sud.<\/p>\n<p>Dans un communique\u0301, le professeur Petteri Taalas, secre\u0301taire ge\u0301ne\u0301ral de l\u2019organisation mondiale de me\u0301te\u0301orologie, voit ce rapport comme un signe d\u2019espoir. Selon lui, \u00ab ce succe\u0300s dans l\u2019e\u0301limination des actifs chimiques montre ce qui peut et doit e\u0302tre fait \u2014 de toute urgence \u2014 pour limiter l\u2019augmentation de la tempe\u0301rature. \u00bb<\/p>\n<p><b>Comment le trou dans la couche d\u2019ozone s\u2019est-il forme\u0301 ?<\/b><\/p>\n<p>Le trou a e\u0301te\u0301 de\u0301couvert pour la premie\u0300re fois dans les anne\u0301es 70 par un consortium de scientifiques. Rapidement, ils mettent en e\u0301vidence l\u2019action du chlore et du brome, deux produits massivement utilise\u0301s dans l\u2019agriculture intensive.<\/p>\n<p>Ces deux gaz ont atteint leur taux record dans l\u2019atmosphe\u0300re durant les anne\u0301es 90. Depuis, les premiers effets du protocole de Montre\u0301al se font ressentir et les taux sont en baisse constante. Le trou a eu des conse\u0301quences terribles de\u0300s le de\u0301but des anne\u0301es 2000 pour les personnes vivant a\u0300 proximite\u0301.<\/p>\n<p>En Oce\u0301anie notamment, il est responsable de deux millions de cancers de la peau tous les ans. En plus des dangers directs pour la sante\u0301, ce manque d\u2019ozone a un impact conside\u0301rable sur le re\u0301chauffement climatique.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/benin\">Benin<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Benin. Un rapport de l\u2019ONU note une progression de l\u2019ozone dans l\u2019atmosphe\u0300re. Un symbole d\u2019espoir dans la lutte contre le re\u0301chauffement climatique. La couche d\u2019ozone est une fine barrie\u0300re de gaz qui prote\u0300ge la Terre des rayons du Soleil. A\u0300 cause de la re\u0301cente activite\u0301 humaine, un trou a pris place au niveau [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":12835,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,50,46],"class_list":["post-12836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-benin","tag-benin-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Le trou dans la couche d\u2019ozone pourrait se fermer d\u2019ici 50 ans - B\u00e9nin<\/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:\/\/www.africa-press.net\/benin\/toutes-les-actualites\/le-trou-dans-la-couche-dozone-pourrait-se-fermer-dici-50-ans\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le trou dans la couche d\u2019ozone pourrait se fermer d\u2019ici 50 ans\" \/>\n<meta property=\"og:description\" content=\"Africa-Press &#8211; Benin. Un rapport de l\u2019ONU note une progression de l\u2019ozone dans l\u2019atmosphe\u0300re. Un symbole d\u2019espoir dans la lutte contre le re\u0301chauffement climatique. La couche d\u2019ozone est une fine barrie\u0300re de gaz qui prote\u0300ge la Terre des rayons du Soleil. 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