{"id":734,"date":"2012-09-10T13:06:00","date_gmt":"2012-09-10T11:06:00","guid":{"rendered":"https:\/\/kids.esa.int\/second_polar_satellite_for_europe_s_weather_watch\/"},"modified":"2026-10-08T00:31:41","modified_gmt":"2026-10-07T22:31:41","slug":"second_polar_satellite_for_europe_s_weather_watch","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/second_polar_satellite_for_europe_s_weather_watch\/","title":{"rendered":"Second satellite en orbite polaire pour la veille m\u00e9t\u00e9orologique de l\u2019Europe"},"content":{"rendered":"<div class=\"lede\">\n<p>Si vous regardez fr\u00e9quemment les pr\u00e9visions m\u00e9t\u00e9orologiques \u00e0 la t\u00e9l\u00e9vision, les images que vous avez vues ont fort probablement \u00e9t\u00e9 transmises par un satellite Meteosat positionn\u00e9 en orbite g\u00e9ostationnaire au-dessus de l\u2019\u00e9quateur. Les satellites MetOp, qui survolent le globe d\u2019un p\u00f4le \u00e0 l\u2019autre \u00e0 une altitude plus r\u00e9duite, sont moins connus. Le premier satellite de la s\u00e9rie MetOp a \u00e9t\u00e9 lanc\u00e9 il y a six ans. Son rempla\u00e7ant s\u2019appr\u00eate \u00e0 entrer en service.<\/p>\n<\/div>\n<p>Si tout se d\u00e9roule comme pr\u00e9vu, le lancement du satellite MetOp-B sera assur\u00e9 par une fus\u00e9e Soyouz depuis le cosmodrome de Ba\u00efkonour (Kazakhstan), le 17 septembre prochain. Le satellite sera plac\u00e9 sur une orbite h\u00e9liosynchrone \u00e0 817 kilom\u00e8tres d'altitude. Cela signifie que Metop-B survolera continuellement la m\u00eame zone \u00e0 la m\u00eame heure locale. Le Soleil se trouvera donc toujours \u00e0 la m\u00eame hauteur au-dessus de l\u2019horizon.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"720\" data-credit=\"ESA\/AOES Medialab\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/02\/MetOp_in_orbit6\" data-licence=\"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\/2006\/02\/metop_in_orbit6\/18250139-2-eng-GB\/MetOp_in_orbit.jpg\" alt=\"MetOp in orbit\"><figcaption>MetOp en orbite<\/figcaption><\/figure>\n<p>Metop-B est le deuxi\u00e8me mod\u00e8le d\u2019une s\u00e9rie de trois satellites en orbite polaire partageant les m\u00eames sp\u00e9cifications. Une fois sa mise en orbite effectu\u00e9e, MetOp-B sera utilis\u00e9 conjointement \u00e0 MetOp-A pendant plusieurs mois afin de garantir une transmission continue de donn\u00e9es de haute qualit\u00e9 pour les pr\u00e9visions m\u00e9t\u00e9orologiques et la surveillance du climat \u00e0 l\u2019\u00e9chelle mondiale. MetOp-C sera le troisi\u00e8me et dernier satellite de la s\u00e9rie. Son lancement est programm\u00e9 pour 2016.<\/p>\n<p>Les satellites MetOp embarquent 11 instruments collectant des donn\u00e9es sur le climat et la m\u00e9t\u00e9o de notre plan\u00e8te, notamment la temp\u00e9rature atmosph\u00e9rique, l\u2019humidit\u00e9, la vitesse du vent et l\u2019\u00e9tat de la couche d\u2019ozone. Ils surveillent \u00e9galement les \u00e9missions gazeuses de dioxyde de carbone, de protoxyde d\u2019azote et de m\u00e9thane. Les satellites MetOp couvrent l\u2019ensemble de la plan\u00e8te en cinq jours.<\/p>\n<p>Le programme MetOp fait appel \u00e0 cinq nouveaux instruments europ\u00e9ens, y compris un dispositif envoyant des impulsions radar pour mesurer la vitesse du vent au-dessus des oc\u00e9ans. L\u2019ESA dirige le projet pour le compte d'EUMETSAT, l'organisation europ\u00e9enne pour l'exploitation des satellites m\u00e9t\u00e9orologiques. Les satellites sont construits par un consortium industriel europ\u00e9en dirig\u00e9 par Astrium.<\/p>","protected":false},"excerpt":{"rendered":"<p>Regular watchers of TV weather forecasts will be familiar with views of Europe taken by a Meteosat spacecraft above the equator. Less well known are the MetOp satellites, which fly [&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\/2012\/09\/metop_satellite2\/17890096-2-eng-GB\/MetOp_satellite.png","esa_banner_description":"MetOp satellite","esa_banner_credit":"ESA\/Eumetsat","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/09\/MetOp_satellite2","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-734","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\/734","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=734"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/734\/revisions"}],"predecessor-version":[{"id":4655,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/734\/revisions\/4655"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=734"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=734"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=734"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=734"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=734"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=734"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=734"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=734"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=734"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}