{"id":75267,"date":"2021-11-09T21:20:00","date_gmt":"2021-11-09T21:20:00","guid":{"rendered":"https:\/\/www.nettali.com\/?p=75267"},"modified":"2021-11-09T21:20:00","modified_gmt":"2021-11-09T21:20:00","slug":"vers-un-rechauffement-de-24c-apres-les-dernieres-promesses-de-glasgow-selon-des-chercheurs","status":"publish","type":"post","link":"https:\/\/www.nettali.com\/2021\/11\/09\/vers-un-rechauffement-de-24c-apres-les-dernieres-promesses-de-glasgow-selon-des-chercheurs\/","title":{"rendered":"Vers un r\u00e9chauffement de 2,4\u00b0C apr\u00e8s les derni\u00e8res promesses de Glasgow, selon des chercheurs"},"content":{"rendered":"<p>NETTALI.COM - Le groupe de recherche Climate Action Tracker a estim\u00e9 mardi que les engagements nationaux pris jusqu'ici \u00e0 la COP26 de Glasgow afin de r\u00e9duire les \u00e9missions de gaz \u00e0 effet de serre d'ici 2030 engendreraient un r\u00e9chauffement de la plan\u00e8te d'environ 2,4\u00b0C d'ici la fin du si\u00e8cle, bien sup\u00e9rieur \u00e0 l'objectif fix\u00e9 par les Nations unies pour 2100.<\/p>\n<p>\"Par cons\u00e9quent, tous les gouvernements doivent reconsid\u00e9rer leurs ambitions\", a affirm\u00e9 le groupe.<\/p>\n<p>Dans un \"sc\u00e9nario optimiste\" o\u00f9 certains pays r\u00e9ussiraient \u00e0 atteindre les objectifs \u00e0 plus long terme visant \u00e0 faire cesser l'augmentation du niveau de gaz \u00e0 effet de serre dans l'atmosph\u00e8re d'ici 2050 ou plus tard, le r\u00e9chauffement pourrait se limiter \u00e0 1,8\u00b0C au cours de ce si\u00e8cle, a-t-il ajout\u00e9.<\/p>\n<p>Cependant, le groupe de recherche questionne cette hypoth\u00e8se, \u00e9tant donn\u00e9 que la plupart des pays n'ont pas encore mis en oeuvre les politiques \u00e0 court terme ou la l\u00e9gislation n\u00e9cessaire pour atteindre ces objectifs.<\/p>\n<p>Dans tous les sc\u00e9narios possibles, la limite de 1,5\u00b0C, que les scientifiques estiment n\u00e9cessaire de respecter pour \u00e9viter les effets les plus d\u00e9vastateurs du changement climatique, serait d\u00e9pass\u00e9e.<\/p>\n<p>Pour rester en dessous de ce seuil, les \u00e9missions mondiales de gaz \u00e0 effet de serre, principalement le dioxyde de carbone provenant de la combustion du charbon, du p\u00e9trole et du gaz, doivent diminuer de 45% par rapport aux niveaux de 2010 d'ici 2030 et atteindre la neutralit\u00e9 d'ici 2050, selon les scientifiques.<\/p>\n<p>Greenpeace a qualifi\u00e9 d'\"accablant\" le constat dress\u00e9 par Climate Action Tracker et exhort\u00e9 les pays \u00e0 accepter de mettre \u00e0 jour leurs objectifs pour 2030 chaque ann\u00e9e jusqu'\u00e0 ce que l'\u00e9cart entre leurs promesses et l'objectif de 1,5\u00b0C soit combl\u00e9.<\/p>\n<p>Reuters<\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<div class='share-to-whatsapp-wrapper'><div class='share-on-whsp'>PARTAGER SUR : <\/div><a data-text='Vers un r\u00e9chauffement de 2,4\u00b0C apr\u00e8s les derni\u00e8res promesses de Glasgow, selon des chercheurs' data-link='https:\/\/www.nettali.com\/2021\/11\/09\/vers-un-rechauffement-de-24c-apres-les-dernieres-promesses-de-glasgow-selon-des-chercheurs\/' class='whatsapp-button whatsapp-share'>WhatsApp<\/a><div class='clear '><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>NETTALI.COM - Le groupe de recherche Climate Action Tracker a estim\u00e9 mardi que les engagements nationaux pris jusqu'ici \u00e0 la COP26 de Glasgow afin de r\u00e9duire les \u00e9missions de gaz \u00e0 effet de serre d'ici 2030 engendreraient un r\u00e9chauffement de la plan\u00e8te d'environ 2,4\u00b0C d'ici la fin du si\u00e8cle, bien sup\u00e9rieur \u00e0 l'objectif fix\u00e9 par [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":75268,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":""},"categories":[3],"tags":[],"yoast_head":"<!-- This site is optimized with 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