{"id":808,"date":"2004-12-03T09:58:00","date_gmt":"2004-12-03T08:58:00","guid":{"rendered":"https:\/\/kids.esa.int\/weather_studies_from_space\/"},"modified":"2026-10-08T00:32:29","modified_gmt":"2026-10-07T22:32:29","slug":"weather_studies_from_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/weather_studies_from_space\/","title":{"rendered":"Etudes m\u00e9t\u00e9orologiques depuis l'espace"},"content":{"rendered":"
\n

Voudriez-vous savoir s'il va pleuvoir sur votre pique-nique ou s'il fera beau pour votre journ\u00e9e d'excursion ? De nos jours, il est facile de se renseigner par observation des images de satellites \u00e0 la t\u00e9l\u00e9vision ou sur l'Internet.<\/p>\n<\/div>\n

Il y a quelques d\u00e9cennies seulement, les pr\u00e9visions m\u00e9t\u00e9o \u00e9taient beaucoup plus al\u00e9atoires. Un des probl\u00e8mes \u00e9tait que les stations m\u00e9t\u00e9o n'existaient que dans peu d'endroits. Partout ailleurs, les conditions m\u00e9t\u00e9o \u00e9taient quasiment un myst\u00e8re.<\/p>\n

De nos jours, les satellites offrent une couverture compl\u00e8te de la Terre. Chaque syst\u00e8me nuageux et temp\u00eate est visible lors de sa formation et de son \u00e9volution.<\/p>\n

Le premier satellit\u00e9 m\u00e9t\u00e9o, TIROS (Television and InfraRed Observation Satellite) a \u00e9t\u00e9 lanc\u00e9 le 1er avril 1960. Il transportait deux cam\u00e9ras de t\u00e9l\u00e9vision qui transmettaient des images granuleuses jusqu\u2019\u00e0 la Terre.<\/p>\n

Les satellites m\u00e9t\u00e9orologiques actuels sont plus grands et bien plus sophistiqu\u00e9s. Ils fournissent aux pr\u00e9visionnistes des images extr\u00eamement d\u00e9taill\u00e9es ainsi que d\u2019autres informations utiles sur l\u2019atmosph\u00e8re et les oc\u00e9ans, qui les aident \u00e0 affiner leurs pr\u00e9visions. Certains satellites m\u00e9t\u00e9orologiques survolent en permanence la m\u00eame partie de la surface terrestre. Ils se trouvent en orbite g\u00e9ostationnaire, \u00e0 36 000 km au-dessus de l'\u00e9quateur.<\/p>\n

D'autres tournent autour de la Terre en passant au-dessus des P\u00f4les Nord et Sud. Ils sont beaucoup plus pr\u00e8s de la surface (parfois jusqu'\u00e0 800 km) et offrent des images tr\u00e8s d\u00e9taill\u00e9es et rapproch\u00e9es des syst\u00e8mes m\u00e9t\u00e9orologiques de toute la Terre.<\/p>","protected":false},"excerpt":{"rendered":"

Do you want to know whether it will rain on your picnic or be sunny for your day trip? Nowadays, it is easy to find out by looking at satellite […]<\/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\/2004\/12\/raining2\/17907087-2-eng-GB\/raining.jpg","esa_banner_description":"","esa_banner_credit":"AP Photo\/David Zalubowsky","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/raining2","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":[10,44,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-808","post","type-post","status-publish","format-standard","hentry","category-learn","category-spacecraft","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/808","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=808"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/808\/revisions"}],"predecessor-version":[{"id":1951,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/808\/revisions\/1951"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=808"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=808"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=808"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=808"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=808"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=808"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=808"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}