{"id":171957,"date":"2025-06-12T23:16:10","date_gmt":"2025-06-12T23:16:10","guid":{"rendered":"https:\/\/www.europesays.com\/fr\/171957\/"},"modified":"2025-06-12T23:16:10","modified_gmt":"2025-06-12T23:16:10","slug":"rhone-pourquoi-le-soleil-etait-il-si-rouge-a-lyon-ces-derniers-soirs","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/fr\/171957\/","title":{"rendered":"Rh\u00f4ne. Pourquoi le soleil \u00e9tait-il si rouge \u00e0 Lyon ces derniers soirs\u00a0?"},"content":{"rendered":"<p>Entre le 8 et le 11\u00a0juin, les habitants de Lyon ont pu admirer chaque soir un coucher de soleil aux teintes particuli\u00e8rement rouges. Si le ph\u00e9nom\u00e8ne n\u2019a rien d\u2019inhabituel en soi, l\u2019intensit\u00e9 des couleurs a surpris de nombreux observateurs, ravissant autant les passionn\u00e9s d\u2019astronomie que les photographes et amateurs d\u2019ap\u00e9ritifs en terrasse.<\/p>\n<p>  Des couleurs amplifi\u00e9es par le printemps<\/p>\n<p>Au printemps, tout change\u00a0: <a href=\"https:\/\/www.leprogres.fr\/environnement\/2025\/06\/10\/nouvelle-vague-de-chaleur-attendue-cette-semaine-jusqu-a-35-c-prevus-a-lyon\" target=\"_blank\" rel=\"nofollow noopener\">temp\u00e9ratures<\/a>, densit\u00e9 de l\u2019air, quantit\u00e9 de poussi\u00e8res\u2026 L\u2019atmosph\u00e8re se renouvelle, ce qui influe directement sur la mani\u00e8re dont la lumi\u00e8re du soleil nous parvient. \u00c0 cette p\u00e9riode, la dur\u00e9e d\u2019ensoleillement s\u2019allonge \u00e9galement, en raison de la position de la Terre par rapport au soleil.<\/p>\n<p>En astronomie, le coucher du soleil correspond au moment o\u00f9 l\u2019astre dispara\u00eet sous l\u2019horizon. Pr\u00e8s de ce dernier, la r\u00e9fraction atmosph\u00e9rique d\u00e9forme les rayons solaires, donnant le coup d\u2019envoi du cr\u00e9puscule.<\/p>\n<p>C\u2019est \u00e0 ce moment pr\u00e9cis que les couleurs deviennent plus intenses et vari\u00e9es, gr\u00e2ce aux multiples interactions entre la lumi\u00e8re et l\u2019air ambiant, plus charg\u00e9 en particules en fin de journ\u00e9e.<\/p>\n<p>  Quand l\u2019atmosph\u00e8re s\u2019en m\u00eale<\/p>\n<p>La pr\u00e9sence de particules \u2013poussi\u00e8res, fum\u00e9es ou pollen, qu\u2019elles soient locales ou transport\u00e9es par les vents\u2013 favorise la diffusion des longueurs d\u2019onde lumineuses les plus longues, c\u2019est-\u00e0-dire les rouges.<\/p>\n<p>C\u2019est ce ph\u00e9nom\u00e8ne qui explique pourquoi le soleil s\u2019est par\u00e9 de teintes rougeoyantes ces derniers jours \u00e0 Lyon.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"Entre le 8 et le 11\u00a0juin, les habitants de Lyon ont pu admirer chaque soir un coucher de&hellip;\n","protected":false},"author":2,"featured_media":171958,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1889],"tags":[1111,11,2430,2757,436,1777,674,107,1011,27,1757,2428,2756,8423,12,25,2429],"class_list":{"0":"post-171957","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-lyon","8":"tag-actu","9":"tag-actualites","10":"tag-auvergne-rhone-alpes","11":"tag-edition-lyon-villeurbanne","12":"tag-environnement","13":"tag-eu","14":"tag-europe","15":"tag-fil-info","16":"tag-fr","17":"tag-france","18":"tag-insolite","19":"tag-lyon","20":"tag-lyon-bassin","21":"tag-meteorologie-climat","22":"tag-news","23":"tag-republique-francaise","24":"tag-rhone"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@fr\/114672945279156405","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/171957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/comments?post=171957"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/171957\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media\/171958"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media?parent=171957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/categories?post=171957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/tags?post=171957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}