{"id":22446,"date":"2026-03-09T17:46:50","date_gmt":"2026-03-09T17:46:50","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=22446"},"modified":"2026-03-22T10:44:26","modified_gmt":"2026-03-22T10:44:26","slug":"latmosphere-de-jupiter-devoile-lentement-ses-secrets","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2026\/03\/09\/latmosphere-de-jupiter-devoile-lentement-ses-secrets\/","title":{"rendered":"L\u2019atmosph\u00e8re de Jupiter d\u00e9voile lentement ses secrets"},"content":{"rendered":"<p><strong>Les observations de Jupiter ne cessent de r\u00e9v\u00e9ler la complexit\u00e9 des ph\u00e9nom\u00e8nes m\u00e9t\u00e9orologiques qui agitent son atmosph\u00e8re.<\/strong><\/p>\n<h5>M\u00e9t\u00e9o de l&#8217;extr\u00eame :<\/h5>\n<p>L&#8217;atmosph\u00e8re de Jupiter est un sujet d&#8217;\u00e9tude depuis plus de 4 si\u00e8cles. De <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/06\/galilee-le-savant-qui-a-ouvert-nos-yeux-sur-lunivers\/\" target=\"_blank\" rel=\"noopener\">Galil\u00e9e<\/a> jusqu&#8217;aux derni\u00e8res images captur\u00e9es par la sonde <a href=\"https:\/\/cnes.fr\/projets\/juno\" target=\"_blank\" rel=\"noopener\">Juno<\/a>, vortex et temp\u00eates joviennes intriguent les observateurs. Pouss\u00e9s par des vents \u00e0 pr\u00e8s de 400 km\/h et sans relief pour les stopper, certains cyclones sont visibles pendant des ann\u00e9es. Record absolu pour la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2024\/06\/19\/jupiter-lage-de-la-grande-tache-rouge-remis-en-cause\/\" target=\"_blank\" rel=\"noopener\">Grande tache rouge<\/a> (GTR), cette c\u00e9l\u00e8bre formation observ\u00e9e depuis le XIXe si\u00e8cle :<\/p>\n<figure id=\"attachment_16767\" aria-describedby=\"caption-attachment-16767\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2022\/10\/jupiter2.jpg\" rel=\"lightbox[22446]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-16767\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2022\/10\/jupiter2-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2022\/10\/jupiter2-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2022\/10\/jupiter2-1024x615.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2022\/10\/jupiter2-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2022\/10\/jupiter2.jpg 1501w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-16767\" class=\"wp-caption-text\">Visible depuis 1831, la Grande tache rouge, est un cyclone deux fois plus grand que la Terre. C&#8217;est la plus ancienne formation m\u00e9t\u00e9orologique connue sur Jupiter. \u00a9 NASA\/ESA<\/figcaption><\/figure>\n<p>\u00c0 l&#8217;aide des mesures fournies par les sondes interplan\u00e9taires (<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Pioneer_10\" target=\"_blank\" rel=\"noopener\">Pioneer 10<\/a>, <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Programme_Voyager\" target=\"_blank\" rel=\"noopener\">Voyager<\/a>, <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Galileo_(sonde_spatiale)\" target=\"_blank\" rel=\"noopener\">Galileo<\/a> et Juno, en attendant celles de <a href=\"https:\/\/cnes.fr\/projets\/juice\" target=\"_blank\" rel=\"noopener\">Juice<\/a>) les scientifiques ont commenc\u00e9 \u00e0 dresser le portrait de cette turbulente couche nuageuse. Et progressent peu \u00e0 peu dans leur compr\u00e9hension des ph\u00e9nom\u00e8nes qui s&#8217;y d\u00e9roulent.<!--more--><\/p>\n<h5>Petits et grands changements :<\/h5>\n<p>Avec la puissance du <a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/\" target=\"_blank\" rel=\"noopener\">t\u00e9lescope spatial Hubble<\/a> (HST), plus besoin d&#8217;attendre qu&#8217;une sonde se mette en orbite autour de Jupiter pour en avoir des vues d\u00e9taill\u00e9es. Les clich\u00e9s pris \u00e0 intervalles r\u00e9guliers r\u00e9v\u00e8lent l&#8217;\u00e9volution permanente de la couche nuageuse :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4.jpg\" rel=\"lightbox[22446]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-22448\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4-450x162.jpg\" alt=\"\" width=\"450\" height=\"162\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4-450x162.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4-1024x369.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4-768x276.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4-1536x553.jpg 1536w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup4-2048x737.jpg 2048w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>On peut y suivre par exemple l&#8217;apparition\/disparition de vortex ainsi que leur sens de rotation, ou encore <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/11\/29\/jupiter-le-declin-de-la-grande-tache-rouge-en-images\/\" target=\"_blank\" rel=\"noopener\">le d\u00e9clin de la GTR<\/a>. Autre sujet d&#8217;\u00e9tude, les variations de teintes (blanc, brun, rouge&#8230;), li\u00e9es \u00e0 la composition chimique des nuages (soufre, phosphore, ammoniac..) qui remontent au sommet de l&#8217;atmosph\u00e8re. Mais pour des analyses plus fines, rien de mieux que les images en haute r\u00e9solution fournies par la sonde Juno :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup6.jpg\" rel=\"lightbox[22446]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-22449\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup6-450x246.jpg\" alt=\"\" width=\"450\" height=\"246\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup6-450x246.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup6-1024x560.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup6-768x420.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup6.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Le professeur Leigh Fletcher a choisi par exemple d&#8217;\u00e9tudier en d\u00e9tail les r\u00e9gions cycloniques proches des p\u00f4les de Jupiter. Un travail dont il pr\u00e9sente les r\u00e9sultats <a href=\"https:\/\/leighfletcher.substack.com\/p\/ocean-of-eddies-jupiters-filamentary\" target=\"_blank\" rel=\"noopener\">sur son blog<\/a>.<\/p>\n<h5>L&#8217;aide des amateurs :<\/h5>\n<p>Pour d\u00e9chiffrer les secrets de la m\u00e9t\u00e9o jovienne, la coop\u00e9ration entre amateurs et professionnels est de mise. Aucune comp\u00e9tence particuli\u00e8re n&#8217;est requise pour s&#8217;inscrire par exemple au <a href=\"https:\/\/www.zooniverse.org\/projects\/ramanakumars\/jovian-vortex-hunter\/about\/research\" target=\"_blank\" rel=\"noopener\"><em>Jovian Vortex Hunter<\/em><\/a>. L\u00e0, chacun peut aider \u00e0 cat\u00e9goriser les diff\u00e9rents types de nuages photographi\u00e9s par Juno en fonction de leur forme et de leur couleur. Mais en mati\u00e8re d&#8217;imagerie, on peut d\u00e9sormais compter sur les astrophotographes les plus aguerris :<\/p>\n<figure id=\"attachment_22451\" aria-describedby=\"caption-attachment-22451\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2.jpg\" rel=\"lightbox[22446]\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-22451 size-medium\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2-450x247.jpg\" alt=\"\" width=\"450\" height=\"247\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2-450x247.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2-1024x563.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2-768x422.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2-1536x845.jpg 1536w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jup2.jpg 2048w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-22451\" class=\"wp-caption-text\">Comparatif entre une image du HST et celle de <a href=\"https:\/\/www.facebook.com\/photo?fbid=26317196027888452&amp;set=a.108915725809840\" target=\"_blank\" rel=\"noopener\">Christopher Go<\/a>.<\/figcaption><\/figure>\n<p>Leurs prises de vues offrent une \u00e9tonnante richesse de d\u00e9tails. Il suffit pour s&#8217;en convaincre de regarder <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2026\/01\/28\/les-tres-belles-images-de-jupiter-au-plus-pres-de-la-terre\/\" target=\"_blank\" rel=\"noopener\">les tr\u00e8s belles images de Jupiter au plus pr\u00e8s de la Terre<\/a>. Les meilleurs clich\u00e9s de ces amateurs n&#8217;ont pas \u00e0 rougir de la comparaison avec ceux pris par le t\u00e9lescope spatial Hubble !<\/p>\n<figure id=\"attachment_22473\" aria-describedby=\"caption-attachment-22473\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jupiter9.jpg\" rel=\"lightbox[22446]\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-22473 size-medium\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jupiter9-450x243.jpg\" alt=\"\" width=\"450\" height=\"243\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jupiter9-450x243.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jupiter9-1024x552.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jupiter9-768x414.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/jupiter9.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-22473\" class=\"wp-caption-text\">Comparatif entre une image du HST et celle de <a href=\"https:\/\/www.facebook.com\/photo?fbid=25807965142198720&amp;set=a.345685235520061\" target=\"_blank\" rel=\"noopener\">Jean-Paul Oger<\/a>.<\/figcaption><\/figure>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a style=\"font-size: 16px;font-weight: 400\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/11\/08\/saisissante-image-des-deux-anticyclones-geants-de-jupiter\/\" target=\"_blank\" rel=\"noopener\">Saisissante image des deux anticyclones g\u00e9ants de Jupiter<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2025\/10\/27\/insolite-observez-les-ombres-des-lunes-de-jupiter\/\" target=\"_blank\" rel=\"noopener\">Insolite : observez les ombres des lunes de Jupiter<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2025\/10\/08\/rarissime-ganymede-la-lune-de-jupiter-va-occulter-une-etoile\/\" target=\"_blank\" rel=\"noopener\">Rarissime : Ganym\u00e8de, la lune de Jupiter, va occulter une \u00e9toile<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Les observations de Jupiter ne cessent de r\u00e9v\u00e9ler la complexit\u00e9 des ph\u00e9nom\u00e8nes m\u00e9t\u00e9orologiques qui agitent son atmosph\u00e8re. M\u00e9t\u00e9o de l&#8217;extr\u00eame : L&#8217;atmosph\u00e8re de Jupiter est un sujet d&#8217;\u00e9tude depuis plus de 4 si\u00e8cles. De Galil\u00e9e jusqu&#8217;aux derni\u00e8res images captur\u00e9es par la sonde Juno, vortex et temp\u00eates joviennes intriguent les observateurs. Pouss\u00e9s par des vents \u00e0 &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2026\/03\/09\/latmosphere-de-jupiter-devoile-lentement-ses-secrets\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">L\u2019atmosph\u00e8re de Jupiter d\u00e9voile lentement ses secrets<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":22447,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[1442,90,3934],"class_list":["post-22446","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-grande-tache-rouge","tag-jupiter","tag-leigh-fletcher"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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