{"id":87827,"date":"2024-06-02T14:43:04","date_gmt":"2024-06-02T14:43:04","guid":{"rendered":"https:\/\/www.africa-press.net\/burkina-faso\/politique\/limiter-la-pollution-amplifie-temporairement-le-rechauffement"},"modified":"2024-06-02T14:57:47","modified_gmt":"2024-06-02T14:57:47","slug":"limiter-la-pollution-amplifie-temporairement-le-rechauffement","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/burkina-faso\/toutes-les-actualites\/limiter-la-pollution-amplifie-temporairement-le-rechauffement","title":{"rendered":"Limiter la pollution amplifie temporairement le r\u00e9chauffement"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Burkina Faso. <\/strong><\/span>Les pollutions aux particules fines refroidissent le climat. De manie\u0300re directe en faisant e\u0301cran au rayonnement solaire, et indirecte en favorisant la formation de nuages ou en modifiant leurs proprie\u0301te\u0301s optiques.<\/p>\n<p><b>Un effet qui vient partiellement masquer le re\u0301chauffement<\/b><\/p>\n<p>A\u0300 l&rsquo;e\u0301chelle globale, cet effet est estime\u0301 a\u0300 environ -0,4\u00b0C sur la dernie\u0300re de\u0301cennie et vient partiellement masquer le re\u0301chauffement de 1,5\u00b0C du\u0302 aux gaz a\u0300 effet de serre (dont 0,8\u00b0 C pour le CO2 et 0,5\u00b0 C pour le me\u0301thane).<\/p>\n<p>Mais la concentration des ae\u0301rosols a conside\u0301rablement baisse\u0301 depuis la fin des anne\u0301es 1990 en Europe et en Ame\u0301rique du Nord, gra\u0302ce a\u0300 des politiques publiques visant a\u0300 ame\u0301liorer la qualite\u0301 de l&rsquo;air. Et les pays d&rsquo;Asie du Sud-Est, l&rsquo;Inde et la Chine commencent aussi aujourd&rsquo;hui a\u0300 adopter de telles mesures re\u0301pondant a\u0300 des enjeux de sante\u0301 publique.<\/p>\n<p><b>Un \u00ab\u00a0rattrapage\u00a0\u00bb de re\u0301chauffement<\/b><\/p>\n<p>De fait, environ 400.000 de\u0301ce\u0300s pre\u0301mature\u0301s chaque anne\u0301e dans le monde seraient dus aux ae\u0301rosols e\u0301mis par les activite\u0301s humaines. Pour ces raisons, nous n&rsquo;avons pas d&rsquo;autre choix que de re\u0301duire les e\u0301missions d&rsquo;ae\u0301rosols atmosphe\u0301riques, me\u0302me si leur effet refroidissant s&rsquo;amoindrit.<\/p>\n<p>Certaines re\u0301gions comme l&rsquo;Europe subissent de\u0300s lors un \u00ab\u00a0rattrapage\u00a0\u00bb de re\u0301chauffement, avec une hausse accentue\u0301e des chaleurs estivales observe\u0301es depuis vingt ans environ. Pour e\u0301cre\u0302ter ce re\u0301chauffement supple\u0301mentaire, il faudrait diminuer rapidement et a\u0300 grande e\u0301chelle les e\u0301missions de me\u0301thane, conforme\u0301ment aux accords de Glasgow de 2021, car les effets me\u0301thane-ae\u0301rosols se compensent parfaitement. Mais objectivement, c\u0327a trai\u0302ne !<\/p>\n<p>Par <b>Christophe Cassou<\/b>, directeur de recherche au CNRS, auteur principal du 6e rapport du Giec (Groupe d&rsquo;experts intergouvernemental sur l&rsquo;e\u0301volution du climat), groupe 1. Et <b>Ce\u0301line Guivarch<\/b>, directrice de recherche a\u0300 l&rsquo;E\u0301cole des ponts, auteure principale du 6e rapport du Giec, groupe 3.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/burkina-faso\">Burkina Faso<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Burkina Faso. Les pollutions aux particules fines refroidissent le climat. De manie\u0300re directe en faisant e\u0301cran au rayonnement solaire, et indirecte en favorisant la formation de nuages ou en modifiant leurs proprie\u0301te\u0301s optiques. Un effet qui vient partiellement masquer le re\u0301chauffement A\u0300 l&rsquo;e\u0301chelle globale, cet effet est estime\u0301 a\u0300 environ -0,4\u00b0C sur la [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":87826,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[111,725,29],"class_list":["post-87827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-burkina-faso","tag-burkina-faso"],"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>Limiter la pollution amplifie temporairement le r\u00e9chauffement - Burkina Faso<\/title>\n<meta name=\"description\" content=\"Les pollutions aux particules fines refroidissent le climat. 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