{"id":8262,"date":"2015-09-16T19:06:44","date_gmt":"2015-09-16T17:06:44","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=8262"},"modified":"2015-09-16T19:22:42","modified_gmt":"2015-09-16T17:22:42","slug":"le-jet-stream-grand-argentier-de-la-situation-meteorologique-actuelle","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/le-jet-stream-grand-argentier-de-la-situation-meteorologique-actuelle\/","title":{"rendered":"Le jet stream, grand argentier de la situation m\u00e9t\u00e9orologique actuelle"},"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>La temp\u00eate \u202aHenry positionn\u00e9e \u00e0 l&rsquo;ouest de l&rsquo;Europe, ce mercredi 16 septembre 2015, avec de tr\u00e8s fortes pluies, des vents forts.<br \/>\nIl faut noter tout bonnement que le jet-stream polaire plonge jusqu&rsquo;au sud de l&rsquo;Espagne.<\/p>\n<p>Low = Basse pression, le vent tourne dans le sens inverse des aiguilles d&rsquo;une montre, et il cr\u00e9\u00e9 un centre de basse pressions sur l&rsquo;oc\u00e9an.<br \/>\nHigh = Haute pression, le vent tourne dans le sens\u00a0des aiguilles d&rsquo;une montre, et il cr\u00e9\u00e9 un syst\u00e8me de haute pression.<\/p>\n<p>Jet Stream = La ligne blanche \u00e9paisse est entra\u00een\u00e9e avec les basses pressions et hautes pressons, c&rsquo;est le courant polaire propulseur qui a une\u00a0vitesse parfois \u00e0 plus de 200 kilom\u00e8tres par heure, et a \u00e9t\u00e9 jusqu&rsquo;\u00e0 500 kilom\u00e8tres \u00e0 l&rsquo;heure (mais au niveau des couches de la haute atmosph\u00e8re).<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream-septembre2015.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"8263\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/le-jet-stream-grand-argentier-de-la-situation-meteorologique-actuelle\/jetstream-septembre2015\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream-septembre2015.jpg?fit=744%2C588&amp;ssl=1\" data-orig-size=\"744,588\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"jetstream-septembre2015\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream-septembre2015.jpg?fit=744%2C588&amp;ssl=1\" class=\"alignnone size-full wp-image-8263\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream-septembre2015.jpg?resize=744%2C588\" alt=\"jetstream-septembre2015\" width=\"744\" height=\"588\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream-septembre2015.jpg?w=744&amp;ssl=1 744w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream-septembre2015.jpg?resize=300%2C237&amp;ssl=1 300w\" sizes=\"auto, (max-width: 744px) 100vw, 744px\" \/><\/a><br \/>\nLa configuration d\u2019un courant-jet n\u2019est pas constante. Elle ressemble plutot \u00e0 un boomerang.<\/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>Les segments du courant-jet se d\u00e9placent au gr\u00e9 des cr\u00eates et des creux de la haute troposph\u00e8re; donc, g\u00e9n\u00e9ralement plus rapidement que les syst\u00e8mes de pression sous-jacents.<\/p>\n<p>Il peut courir aussi loin que la limite nord des tropiques, mais sa v\u00e9locit\u00e9 sera alors nettement moindre qu\u2019aux latitudes moyennes, o\u00f9 il atteint ses plus fortes pointes.<\/p>\n<p>La position du courant jet n\u2019est jamais la m\u00eame. En quelques jours, la forme que prend ce courant peut changer consid\u00e9rablement. En hiver, sa position est plus au sud. De plus, l\u2019hiver la vitesse des vents dans le courant est plus \u00e9lev\u00e9e que durant l\u2019\u00e9t\u00e9 \u00e9tant donn\u00e9e le plus grand contrast dans les temp\u00e9ratures.<\/p>\n<p>Il est \u00e0 noter que depuis 1 an, le jet stream montre des anomalies. Voici un document video datant de novembre 2014 qui signalait\u00a0d\u00e9j\u00e0 ce ph\u00e9nom\u00e8ne :<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/1k79FZsjnO4?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>Le jet stream, grand argentier de la situation m\u00e9t\u00e9orologique actuelle<\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"8262\">(364)<\/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>La temp\u00eate \u202aHenry positionn\u00e9e \u00e0 l&rsquo;ouest de l&rsquo;Europe, ce mercredi 16 septembre 2015, avec de tr\u00e8s fortes pluies, des vents&#8230;<\/p>\n","protected":false},"author":1,"featured_media":8264,"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":"","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":[32],"tags":[4721,4720,1204,241,62,141],"class_list":["post-8262","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-meteorologie","tag-basse-pression","tag-haute-pression","tag-jet-stream","tag-ocean","tag-pluie","tag-vent","wpcat-32-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/jetstream.png?fit=768%2C512&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-29g","jetpack-related-posts":[{"id":3929,"url":"https:\/\/www.laterredufutur.com\/accueil\/dossier-n-1-les-courants-marins\/","url_meta":{"origin":8262,"position":0},"title":"Dossier N\u00b0 1 : Les Courants Marins","author":"Admin","date":"1 avril 2007","format":false,"excerpt":"dossier, en\u00a04 parties qui seront publi\u00e9es sur la Terre du Futur, transmis par Fifi321fth (Thomas), pass\u00e9 au lyc\u00e9e Sacr\u00e9-Coeur \u00e0 Reims. Thomas L., Enguerran D., Juliette M. Dossier Exclusif sur les Courants Marins et de ce qui en r\u00e9sulte... Ici\u00a01 ere partie.. SOMMAIRE des\u00a04 parties qui seront publi\u00e9es en\u00a04 articles\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\/laterredufutur.com\/spaw\/images\/courant1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3187,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-jet-stream-polaire-mis-a-lepreuve\/","url_meta":{"origin":8262,"position":1},"title":"Le jet stream polaire mis \u00e0 l&rsquo;\u00e9preuve","author":"Admin","date":"21 d\u00e9cembre 2005","format":false,"excerpt":"Courant a\u00e9rien d'une force peu commune, ceinturant le globe terrestre sous la forme de deux anneaux situ\u00e9s au-dessus des h\u00e9misph\u00e8res nord et sud \u00e0 environ 10\u00a0000 m\u00e8tres d'altitude. La vitesse du vent, dans le Jet Stream, d\u00e9passe les 300 km\/h et r\u00e9sulte du contraste thermique existant \u00e0 cette altitude entre\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\/2015\/04\/jetstream_canada.jpeg?fit=400%2C300&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":458,"url":"https:\/\/www.laterredufutur.com\/accueil\/loscillation-arctique-maitre-du-temps\/","url_meta":{"origin":8262,"position":2},"title":"L&rsquo;Oscillation Arctique ma\u00eetre du temps","author":"Admin","date":"21 juillet 2011","format":false,"excerpt":"Pour la plupart des personnes qui ne s'int\u00e9resse pas \u00e0 la m\u00e9t\u00e9o et au climat, l'Oscillation Arctique (AO) est un terme inconnu voir barbare. 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Ils sont repartis sur toutes les mers du globe et disposent chacun de deux phases, l\u2019une dite \u00ab positive \u00bb, l\u2019autre dite \u00ab n\u00e9gative \u00bb. ENSO :\u2026","rel":"","context":"Dans &quot;M\u00e9t\u00e9orologie&quot;","block_context":{"text":"M\u00e9t\u00e9orologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/meteorologie\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7539,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-jet-stream-forme-la-lettre-omega-sur-la-france\/","url_meta":{"origin":8262,"position":4},"title":"Le jet stream forme la lettre omega sur la France","author":"Admin","date":"1 juillet 2015","format":false,"excerpt":"Voici une vue satellite du \"bloc om\u00e9ga\" sur l'Europe de l'ouest, qui est \u00e0 l'origine de l'importante vague de chaleur. Une forte cr\u00eate s'est\u00a0form\u00e9e sur l'ouest de l'Europe, le jet stream se d\u00e9marque par une remont\u00e9e spectaculaire sur l'ouest de la France et redescendant sur l'est de la France. Cr\u00e9ant\u2026","rel":"","context":"Dans &quot;M\u00e9t\u00e9orologie&quot;","block_context":{"text":"M\u00e9t\u00e9orologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/meteorologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/jet-stream-juin2015.jpg?fit=1200%2C841&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/jet-stream-juin2015.jpg?fit=1200%2C841&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/jet-stream-juin2015.jpg?fit=1200%2C841&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/jet-stream-juin2015.jpg?fit=1200%2C841&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/jet-stream-juin2015.jpg?fit=1200%2C841&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3689,"url":"https:\/\/www.laterredufutur.com\/accueil\/loscillation-nord-atlantique-explication-dun-changement-climatique\/","url_meta":{"origin":8262,"position":5},"title":"L&rsquo;Oscillation Nord Atlantique : Explication d&rsquo;un changement climatique","author":"Admin","date":"8 octobre 2006","format":false,"excerpt":"Voici que les hivers 2005\u00a0et 2006 furent\u00a0 consid\u00e9r\u00e9s les plus froids, dans certaines r\u00e9gions, depuis plusieurs d\u00e9cennies, o\u00f9 tout cela devient beaucoup plus clair quand nous \u00e9tudions l'Oscillation Nord Altantique (ONA) ou version anglaise NAO. L'oscillation nord-atlantique (NAO) repr\u00e9sente les changements \"typiques\" de la pression au niveau de la mer\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\/spaw\/images\/gulfstream.gif?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\/8262","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=8262"}],"version-history":[{"count":2,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/8262\/revisions"}],"predecessor-version":[{"id":8266,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/8262\/revisions\/8266"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/8264"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=8262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=8262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=8262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}