{"id":23957,"date":"2022-04-12T17:48:02","date_gmt":"2022-04-12T15:48:02","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=23957"},"modified":"2022-04-12T17:48:02","modified_gmt":"2022-04-12T15:48:02","slug":"la-planete-neptune-rencontre-un-refroidissement-climatique-depuis-le-debut-de-son-ete-austral","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/la-planete-neptune-rencontre-un-refroidissement-climatique-depuis-le-debut-de-son-ete-austral\/","title":{"rendered":"La plan\u00e8te Neptune rencontre un refroidissement climatique depuis le d\u00e9but de son \u00e9t\u00e9 austral"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Les scientifiques supposent que ce refroissement est li\u00e9 \u00e0 des \u00e9volutions dans la chimie de la stratosph\u00e8re de l&rsquo;astre, ou qu&rsquo;il pourrait y avoir un lien avec le cycle solaire.<\/p>\n<p>Avec des saisons durant chacune quarante ans, la plan\u00e8te Neptune devrait \u00eatre \u00e9pargn\u00e9e par de brusques changements de climat. Pourtant, elle conna\u00eet un net refroidissement depuis le d\u00e9but de son \u00e9t\u00e9 austral, il y a dix-sept ans, selon une \u00e9tude publi\u00e9e lundi 11 avril.<\/p>\n<p>\u00ab\u00a0Ce changement \u00e9tait inattendu\u00a0\u00bb, a remarqu\u00e9 Michael Roman, astronome \u00e0 l&rsquo;universit\u00e9 britannique de Leicester, responsable de l&rsquo;\u00e9tude et cit\u00e9 dans un communiqu\u00e9 de l&rsquo;Observatoire europ\u00e9en austral (ESO). \u00ab\u00a0Nous nous attendions \u00e0 ce que les temp\u00e9ratures augmentent lentement, pas qu&rsquo;elles deviennent plus froides.\u00a0\u00bb<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>Une baisse d&rsquo;environ huit degr\u00e9s<br \/>\nAlors que son \u00e9t\u00e9 austral a commenc\u00e9 en 2005 dans son h\u00e9misph\u00e8re sud, la temp\u00e9rature moyenne de Neptune a baiss\u00e9 d&rsquo;environ 8 \u00b0C entre 2003 et 2018, selon les observations de l&rsquo;\u00e9tude. Un chiffre \u00e0 comparer avec sa temp\u00e9rature moyenne de -200 \u00b0C. Les observations ont mis au jour un autre ph\u00e9nom\u00e8ne : le r\u00e9chauffement brusque du p\u00f4le Sud de la plan\u00e8te, de quelques 11 \u00b0C en 2018 et 2020.<\/p>\n<p>Les scientifiques n&rsquo;expliquent pas la cause de ces changements de temp\u00e9rature. Ils supposent des \u00e9volutions dans la chimie de la stratosph\u00e8re, des ph\u00e9nom\u00e8nes al\u00e9atoires ou encore un lien avec le cycle solaire.<\/p>\n<p>Huiti\u00e8me plan\u00e8te du syst\u00e8me solaire, pour laquelle une ann\u00e9e s&rsquo;\u00e9tire sur environ 165 ann\u00e9es terrestres, Neptune poss\u00e8de une atmosph\u00e8re compos\u00e9e d&rsquo;un m\u00e9lange d&rsquo;hydrog\u00e8ne, d&rsquo;h\u00e9lium et d&rsquo;hydrocarbures.<\/p>\n<p>source : <a href=\"https:\/\/www.francetvinfo.fr\/sciences\/espace\/la-planete-neptune-connait-un-net-refroidissement-depuis-le-debut-de-son-ete-austral_5076580.html\" rel=\"noopener\" target=\"_blank\">https:\/\/www.francetvinfo.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"23957\">(279)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Les scientifiques supposent que ce refroissement est li\u00e9 \u00e0 des \u00e9volutions dans la chimie de la stratosph\u00e8re de l&rsquo;astre, ou&#8230;<\/p>\n","protected":false},"author":1,"featured_media":23958,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"La plan\u00e8te #Neptune rencontre un #refroidissement climatique depuis le d\u00e9but de son \u00e9t\u00e9 austral @laterredufutur.com Terra Projects","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[20,22,24],"tags":[41,5710,46,37,64],"class_list":["post-23957","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climat","category-espace","category-soleil","tag-climat","tag-neptune","tag-refroidissement","tag-soleil","tag-temperatures","wpcat-20-id","wpcat-22-id","wpcat-24-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/neptune.jpg?fit=1000%2C1000&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-6ep","jetpack-related-posts":[{"id":1768,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-refroidissement-du-climat-dans-lhemisphere-nord-pourrait-debuter-en-2015\/","url_meta":{"origin":23957,"position":0},"title":"Le refroidissement du climat dans l\u2019h\u00e9misph\u00e8re Nord pourrait d\u00e9buter en 2015","author":"Admin","date":"16 janvier 2014","format":false,"excerpt":"En 2015, le climat dans l\u2019h\u00e9misph\u00e8re Nord va progressivement tourner vers le refroidissement. Ces conclusions ont \u00e9t\u00e9 faites par Mototaka Nakamura, le sp\u00e9cialiste de l\u2019Agence nationale japonaise pour la recherche marine. Au cours de l\u2019\u00e9tude, le scientifique japonais a analys\u00e9 les changements de temp\u00e9rature de l\u2019eau \u00e0 la surface de\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/06\/baisse-des-tempratures.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":25165,"url":"https:\/\/www.laterredufutur.com\/accueil\/tous-les-nuages-de-neptune-ont-mysterieusement-disparu-et-le-soleil-pourrait-en-etre-responsable\/","url_meta":{"origin":23957,"position":1},"title":"Tous les nuages de Neptune ont myst\u00e9rieusement disparu, et le soleil pourrait en \u00eatre responsable","author":"Admin","date":"30 ao\u00fbt 2023","format":false,"excerpt":"La disparition des nuages de la g\u00e9ante gazeuse est li\u00e9e au cycle solaire de 11 ans. Tous les nuages de Neptune ont disparu, et les scientifiques pensent que le soleil en est responsable. La disparition des brins blancs et vaporeux de m\u00e9thane gel\u00e9 qui pars\u00e8ment habituellement le visage azur de\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/neptune.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/neptune.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/neptune.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/neptune.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":3588,"url":"https:\/\/www.laterredufutur.com\/accueil\/locean-profond-se-rebiffe\/","url_meta":{"origin":23957,"position":2},"title":"L&rsquo;Oc\u00e9an Profond se rebiffe","author":"Admin","date":"7 ao\u00fbt 2006","format":false,"excerpt":"Voici ce qui pourrait \u00eatre le meilleur candidat, d'un puit de carbone \u00e0 bout de souffle et qui pourrait dans le m\u00eame temps se changer en choc climatique \"invers\u00e9\". En \u00e9tudiant les courbes graphiques de l'expansion du CO2 depuis 600000 ans, \u00e0 chaque augmentation du CO2, le taux de ppm\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/Antarctique-Mont-Erebus-1.jpeg?fit=384%2C288&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":26426,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-oceans-emettent-du-soufre-et-refroidissent-le-climat-plus-quon-ne-le-pensait-auparavant\/","url_meta":{"origin":23957,"position":3},"title":"Les oc\u00e9ans \u00e9mettent du soufre et refroidissent le climat plus qu&rsquo;on ne le pensait auparavant","author":"Admin","date":"1 d\u00e9cembre 2024","format":false,"excerpt":"Pour la premi\u00e8re fois, des chercheurs ont quantifi\u00e9 les \u00e9missions mondiales d'un gaz sulfureux produit par la vie marine, r\u00e9v\u00e9lant qu'il refroidit le climat plus qu'on ne le pensait, en particulier au-dessus de l'oc\u00e9an Austral. L'\u00e9tude, publi\u00e9e dans la revue Science Advances, montre que les oc\u00e9ans ne se contentent pas\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/12\/vie-marine-et-ocean.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/12\/vie-marine-et-ocean.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/12\/vie-marine-et-ocean.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/12\/vie-marine-et-ocean.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":21823,"url":"https:\/\/www.laterredufutur.com\/accueil\/nouvel-indice-qui-expliquerait-les-glaciations-depuis-2-6-millions-dannees\/","url_meta":{"origin":23957,"position":4},"title":"Nouvel indice qui expliquerait les glaciations depuis 2.6 millions d&rsquo;ann\u00e9es","author":"Admin","date":"15 janvier 2021","format":false,"excerpt":"La Terre est marqu\u00e9e par des cycles de glaciation. Chaque \u00e8re glaciaire \u00e9tant suivie d'une p\u00e9riode interglaciaire. Depuis quelque 2,6 millions d'ann\u00e9es, la Terre conna\u00eet des cycles de glaciation. Elle alterne entre des chutes drastiques de temp\u00e9rature, o\u00f9 une grande partie des continents s'englacent, et r\u00e9chauffement. Sans que les scientifiques\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/02\/antarctique.jpg?fit=1024%2C768&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/02\/antarctique.jpg?fit=1024%2C768&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/02\/antarctique.jpg?fit=1024%2C768&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/02\/antarctique.jpg?fit=1024%2C768&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":1270,"url":"https:\/\/www.laterredufutur.com\/accueil\/rechauffement-du-systeme-solaire\/","url_meta":{"origin":23957,"position":5},"title":"R\u00e9chauffement du syst\u00e8me solaire","author":"Admin","date":"3 mars 2013","format":false,"excerpt":"Les humains pourraient-ils \u00eatre responsables des changements climatiques sur les autres plan\u00e8tes du syst\u00e8me solaire, ou le soleil en serait-il le grand responsable ? Ce qui suit n'enl\u00e8ve en rien de la responsabilit\u00e9 de l'Homme sur le Climat et l'Environnement de notre bonne vieille Terre. L'Homme reste responsable de la\u2026","rel":"","context":"Dans &quot;Soleil&quot;","block_context":{"text":"Soleil","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/soleil\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2013\/03\/laterredufutur.com_spaw_images_systemesolaire.jpg?fit=430%2C282&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/23957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=23957"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/23957\/revisions"}],"predecessor-version":[{"id":23959,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/23957\/revisions\/23959"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/23958"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=23957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=23957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=23957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}