{"id":372,"date":"2018-08-17T09:49:00","date_gmt":"2018-08-17T07:49:00","guid":{"rendered":"https:\/\/kids.esa.int\/introducing_aeolus_esa_s_wind-watching_satellite\/"},"modified":"2026-10-08T00:27:24","modified_gmt":"2026-10-07T22:27:24","slug":"introducing_aeolus_esa_s_wind-watching_satellite","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/introducing_aeolus_esa_s_wind-watching_satellite\/","title":{"rendered":"D\u00e9couvrez Aeolus, le satellite d\u2019\u00e9tude des vents de l\u2019ESA"},"content":{"rendered":"<div class=\"lede\">\n<p>Quand avez-vous consult\u00e9 pour la derni\u00e8re fois des pr\u00e9visions m\u00e9t\u00e9orologiques? \u00c9taient-elles exactes ? Pr\u00e9voir la m\u00e9t\u00e9o peut s\u2019av\u00e9rer difficile, mais des bulletins pr\u00e9cis sont d'une importance capitale. Les informations m\u00e9t\u00e9orologiques assistent de nombreux professionnels dans des domaines aussi vari\u00e9s que l'agriculture, la p\u00eache, la construction ou les transports publics; et elles nous aident \u00e0 planifier notre journ\u00e9e! Les bulletins m\u00e9t\u00e9o sont de plus en plus fiables, mais obtenir davantage d\u2019informations sur le vent pourrait nous permettre d\u2019am\u00e9liorer encore plus les pr\u00e9visions m\u00e9t\u00e9orologiques. C\u2019est dans ce contexte que l\u2019ESA s\u2019appr\u00eate \u00e0 lancer un nouveau satellite baptis\u00e9 Aeolus.<\/p>\n<\/div>\n<p><i>Voici \u00e0 quoi ressemblera Aeolus une fois en orbite autour de la Terre. Cr\u00e9dit : ESA\/ATG Medialab.<\/i><\/p>\n<p>La plupart des satellites sont \u00e9quip\u00e9s d\u2019une multitude d\u2019instruments, mais Aeolus n\u2019en poss\u00e8de qu\u2019un. Baptis\u00e9 Aladin, cet instrument tr\u00e8s important est compos\u00e9 de deux lasers de forte puissance, d\u2019un grand t\u00e9lescope et de plusieurs r\u00e9cepteurs \u00e0 haute sensibilit\u00e9. Les lasers \u00e9mettent des impulsions lumineuses \u00e0 ultraviolets vers la Terre, qui sont ensuite r\u00e9fl\u00e9chis par les mol\u00e9cules, la poussi\u00e8re, la glace et l\u2019eau de notre atmosph\u00e8re. Cette lumi\u00e8re est alors renvoy\u00e9e vers le satellite puis collect\u00e9e par le t\u00e9lescope d\u2019Aladin \u00e0 des fins d\u2019analyse. Gr\u00e2ce \u00e0 cette technique, Aeolus peut \u00e9tudier les vents qui parcourent l\u2019atmosph\u00e8re de notre plan\u00e8te entre 0 et 30 km d\u2019altitude.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4625\" data-credit=\"Copyright contains modified Copernicus Sentinel data (2017), processed by ESA, CC BY-SA 3.0 IGO\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/08\/Hurricane_Ophelia\" data-licence=\"CC BY-SA 3.0 IGO or ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2018\/08\/hurricane_ophelia\/17909308-2-eng-GB\/Hurricane_Ophelia.jpg\" alt=\"Hurricane Ophelia\"><figcaption>L'ouragan Ophelia<\/figcaption><\/figure>\n<p>Cette mission d\u2019\u00e9tude va nous aider \u00e0 \u00e9laborer des cartes pr\u00e9cises et fiables des vents autour de la Terre, pour mieux comprendre leur \u00e9volution afin de fournir des pr\u00e9visions m\u00e9t\u00e9orologiques encore plus utiles. Cela pourrait m\u00eame permettre de sauver des vies humaines en anticipant plus t\u00f4t les catastrophes comme les ouragans afin d\u2019acc\u00e9l\u00e9rer, le cas \u00e9ch\u00e9ant, les man\u0153uvres d\u2019\u00e9vacuation.<\/p>\n<p>Mieux comprendre les ph\u00e9nom\u00e8nes li\u00e9s au vent va par ailleurs aider les scientifiques \u00e0 pr\u00e9voir les changements climatiques sur le long terme, ce qui contribuera \u00e0 assurer la sant\u00e9 et la s\u00e9curit\u00e9 des habitants de la Terre sur plusieurs g\u00e9n\u00e9rations! La mission Aeolus devrait durer trois ans et, si elle est couronn\u00e9e de succ\u00e8s, va ouvrir la voie \u00e0 de nouveaux satellites d\u2019\u00e9tude des vents.<\/p>\n<p><b>Fait int\u00e9ressant :<\/b> Aeolus tire son nom du \u201c gardien des vents \u201d de la mythologie grecque antique.<\/p>","protected":false},"excerpt":{"rendered":"<p>When was the last time you checked the weather forecast? Was it accurate? Predicting the weather is very difficult, but accurate forecasts are important. They help with farming, fishing, construction, [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2018\/08\/profiling_the_world_s_winds\/17879255-2-eng-GB\/Profiling_the_world_s_winds.jpg","esa_banner_description":"Profiling the world's winds","esa_banner_credit":"ESA\/ATG medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/08\/Profiling_the_world_s_winds","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-372","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=372"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/372\/revisions"}],"predecessor-version":[{"id":4420,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/372\/revisions\/4420"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=372"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=372"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=372"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=372"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=372"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=372"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=372"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}