{"id":14783,"date":"2025-05-29T13:14:01","date_gmt":"2025-05-29T11:14:01","guid":{"rendered":"https:\/\/www.loni-infos.com\/?p=14783"},"modified":"2025-05-29T13:14:03","modified_gmt":"2025-05-29T11:14:03","slug":"climat-des-records-de-chaleur-attendus-dici-2029-alertent-les-experts","status":"publish","type":"post","link":"https:\/\/www.loni-infos.com\/index.php\/2025\/05\/29\/climat-des-records-de-chaleur-attendus-dici-2029-alertent-les-experts\/","title":{"rendered":"Climat : Des records de chaleur attendus d\u2019ici 2029, alertent les experts"},"content":{"rendered":"\n<p>La plan\u00e8te se dirige vers une p\u00e9riode de chaleur sans pr\u00e9c\u00e9dent. Dans une pr\u00e9vision conjointe publi\u00e9e mercredi 29 mai, l\u2019Organisation m\u00e9t\u00e9orologique mondiale (OMM) et le Met Office britannique estiment qu\u2019il y a 80 % de probabilit\u00e9 que le monde batte un nouveau record annuel de temp\u00e9rature d\u2019ici \u00e0 2029. Les chances que la temp\u00e9rature moyenne d&#8217;une ann\u00e9e d\u00e9passe le seuil de 1,5 \u00b0C par rapport \u00e0 l\u2019\u00e8re pr\u00e9industrielle sont \u00e9valu\u00e9es \u00e0 86 %.<\/p>\n\n\n\n<p>Depuis les ann\u00e9es 1850, la temp\u00e9rature moyenne mondiale a d\u00e9j\u00e0 augment\u00e9 d\u2019environ 1,2 \u00b0C, sous l\u2019effet des \u00e9missions de gaz \u00e0 effet de serre li\u00e9es aux activit\u00e9s humaines. Selon les mod\u00e8les climatiques utilis\u00e9s par une dizaine de centres internationaux, ce r\u00e9chauffement pourrait atteindre temporairement 1,5 \u00b0C dans les cinq prochaines ann\u00e9es, un niveau fix\u00e9 comme limite dans l\u2019accord de Paris de 2015.<\/p>\n\n\n\n<p>\u00ab Quand il s\u2019agit de temp\u00e9ratures, les dixi\u00e8mes de degr\u00e9 comptent \u00e9norm\u00e9ment \u00bb, a rappel\u00e9 Peter Prengaman, chef du bureau climat \u00e0 l\u2019Associated Press. Ce d\u00e9passement ponctuel ne constitue toutefois pas une violation formelle de l\u2019accord, qui repose sur une moyenne de vingt ans.<\/p>\n\n\n\n<p>La tendance reste n\u00e9anmoins pr\u00e9occupante. \u00ab La hausse des temp\u00e9ratures est un indicateur clair que la plan\u00e8te est en train de changer, ce qui signifie plus de vagues de chaleur, de s\u00e9cheresses et d\u2019\u00e9v\u00e9nements extr\u00eames \u00bb, a expliqu\u00e9 Chris Hewitt, directeur des services climatiques \u00e0 l\u2019OMM.<\/p>\n\n\n\n<p>Le r\u00e9chauffement touche particuli\u00e8rement l\u2019Arctique, qui se r\u00e9chauffe actuellement 3,5 fois plus vite que la moyenne mondiale. Ce ph\u00e9nom\u00e8ne entra\u00eene une fonte acc\u00e9l\u00e9r\u00e9e des glaces et une mont\u00e9e du niveau des mers, accentuant encore les risques pour les populations c\u00f4ti\u00e8res et les \u00e9cosyst\u00e8mes fragiles.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La plan\u00e8te se dirige vers une p\u00e9riode de chaleur sans pr\u00e9c\u00e9dent. Dans une pr\u00e9vision conjointe publi\u00e9e mercredi 29 mai, l\u2019Organisation m\u00e9t\u00e9orologique mondiale (OMM) et le Met Office britannique estiment qu\u2019il y a 80 % de probabilit\u00e9 que le monde batte un nouveau record annuel de temp\u00e9rature d\u2019ici \u00e0 2029. Les chances que la temp\u00e9rature moyenne<\/p>\n","protected":false},"author":1,"featured_media":3891,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":{"0":"post-14783","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-environnement"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Climat : Des records de chaleur attendus d\u2019ici 2029, alertent les experts - Loni-infos<\/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.loni-infos.com\/index.php\/2025\/05\/29\/climat-des-records-de-chaleur-attendus-dici-2029-alertent-les-experts\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Climat : Des records de chaleur attendus d\u2019ici 2029, alertent les experts - Loni-infos\" \/>\n<meta property=\"og:description\" content=\"La plan\u00e8te se dirige vers une p\u00e9riode de chaleur sans pr\u00e9c\u00e9dent. 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