{"id":6518,"date":"2015-05-14T18:00:01","date_gmt":"2015-05-14T16:00:01","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=6518"},"modified":"2015-05-12T16:36:02","modified_gmt":"2015-05-12T14:36:02","slug":"une-carte-montre-les-regions-les-plus-nuageuses-du-monde","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/une-carte-montre-les-regions-les-plus-nuageuses-du-monde\/","title":{"rendered":"Une carte montre les r\u00e9gions les plus nuageuses du monde"},"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>Sur les photographies prises depuis l\u2019espace, la Terre est souvent recouverte d\u2019un voile de nuages. Plus pr\u00e9cis\u00e9ment, c\u2019est 67% de la surface de notre plan\u00e8te qui serait g\u00e9n\u00e9ralement sous un ciel gris, selon une \u00e9tude de plus d\u2019une dizaine d\u2019ann\u00e9es d\u2019observations par le satellite de recherche scientifique Aqua.<\/p>\n<p>L\u2019image ci-dessus, \u00e9labor\u00e9e \u00e0 partir des relev\u00e9s du satellite de la Nasa effectu\u00e9s entre juillet 2002 et avril 2015, montre \u00abl\u2019ennuagement\u00bb moyen de la Terre sur cette p\u00e9riode. En bleu, les zones g\u00e9n\u00e9ralement sans nuages, comme l\u2019Australie, le Sahara, le Moyen-Orient et l\u2019ouest du Chili. En blanc, celles qui sont fr\u00e9quemment recouvertes.<\/p>\n<p>On observe trois bandes nuageuses horizontales principales, note le Nasa Earth Observatory, qui publie la carte. L\u2019une, situ\u00e9e au-dessus de l\u2019\u00e9quateur, est le r\u00e9sultat des \u00abcellules de Hadley\u00bb: des vents r\u00e9guliers soufflent sur la zone situ\u00e9e entre 30 degr\u00e9s de latitude nord et 30 degr\u00e9s de latitude sud. Les deux autres sont situ\u00e9es dans les \u00ablatitudes moyennes\u00bb, \u00e0 60 degr\u00e9s au nord et au sud de l\u2019\u00e9quateur.<\/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><a href=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"6519\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/une-carte-montre-les-regions-les-plus-nuageuses-du-monde\/couche-nuageuse-terrestre\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?fit=1500%2C961&amp;ssl=1\" data-orig-size=\"1500,961\" 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=\"couche-nuageuse-terrestre\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?fit=800%2C513&amp;ssl=1\" class=\"alignnone size-full wp-image-6519\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?resize=1500%2C961\" alt=\"couche-nuageuse-terrestre\" width=\"1500\" height=\"961\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?w=1500&amp;ssl=1 1500w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?resize=300%2C192&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?resize=800%2C513&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?resize=900%2C577&amp;ssl=1 900w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><br \/>\n90% des oc\u00e9ans sous les nuages<br \/>\nAlors que 30% de la surface des continents est g\u00e9n\u00e9ralement sous un ciel bleu, cette proportion tombe \u00e0 10% au-dessus des oc\u00e9ans, selon une autre recherche. Cela est d\u00fb au ph\u00e9nom\u00e8ne oc\u00e9anographique de la remont\u00e9e d\u2019eau : quand les eaux froides du fond des mers remontent, l\u2019air au-dessus de la surface est refroidi, ce qui provoque la condensation de la vapeur d\u2019eau en gouttelettes, qui forme des nuages, les stratocumulus, qui recouvrent un cinqui\u00e8me de la surface de la Terre.<br \/>\nOn peut \u00e9galement observer un autre ph\u00e9nom\u00e8ne, particuli\u00e8rement notable au-dessus de l\u2019Afrique, l\u2019Am\u00e9rique du Nord et l\u2019Am\u00e9rique du Sud: les nuages ont tendance \u00e0 se former sur la c\u00f4te ouest des continents, \u00e0 cause du mouvement de surface des oc\u00e9ans d\u00fb \u00e0 l\u2019inclinaison de l\u2019axe de la Terre et \u00e0 son sens de rotation.<br \/>\nEnfin, cette carte \u00e9tant une moyenne des observations sur plusieurs ann\u00e9es, elle ne tient pas compte des variations saisonni\u00e8res ou quotidiennes, ce qui explique que la France soit \u00e0 peine visible, voil\u00e9e par un imp\u00e9n\u00e9trable manteau nuageux.<\/p>\n<p><a href=\"http:\/\/www.laterredufutur.com\/accueil\/\">TDF<\/a><\/p>\n<p>source :\u00a0http:\/\/www.20minutes.fr\/<\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"6518\">(339)<\/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>Sur les photographies prises depuis l\u2019espace, la Terre est souvent recouverte d\u2019un voile de nuages. Plus pr\u00e9cis\u00e9ment, c\u2019est 67% de&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6519,"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_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},"jetpack_post_was_ever_published":false},"categories":[32],"tags":[196,197,198,4279,188,55,180,75],"class_list":["post-6518","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-meteorologie","tag-afrique","tag-amerique","tag-asie","tag-couche-nuageuse","tag-europe","tag-meteo","tag-nuages","tag-terre","wpcat-32-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/couche-nuageuse-terrestre.jpg?fit=1500%2C961&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-1H8","jetpack-related-posts":[{"id":3463,"url":"https:\/\/www.laterredufutur.com\/accueil\/deux-nouveaux-satellites-pour-letude-de-latmosphere\/","url_meta":{"origin":6518,"position":0},"title":"Deux nouveaux satellites pour l&rsquo;\u00e9tude de l&rsquo;atmosph\u00e8re","author":"Admin","date":"12 mai 2006","format":false,"excerpt":"Le lancement simultan\u00e9, le 28 avril dernier, des satellites CloudSat et CALIPSO depuis la base californienne Vandenberg par la NASA, devrait donner un v\u00e9ritable coup de fouet aux capacit\u00e9s d'observation de l'atmosph\u00e8re et \u00e0 la surveillance du climat. CloudSat effectuera la toute premi\u00e8re \u00e9tude globale et tridimensionnelle des nuages en\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/calipso_source_nasa.jpeg?fit=400%2C255&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5055,"url":"https:\/\/www.laterredufutur.com\/accueil\/changement-climatique-des-politiques-fondees-sur-de-la-pseudoscience\/","url_meta":{"origin":6518,"position":1},"title":"Changement climatique : des politiques fond\u00e9es sur de la pseudoscience","author":"Admin","date":"12 octobre 2009","format":false,"excerpt":"Que d\u2019\u00e9v\u00e9nements sur le front du changement climatique pendant cet \u00e9t\u00e9 2009\u00a0! Commen\u00e7ons par faire le point de certaines connaissances scientifiques. Les derni\u00e8res nouvelles ach\u00e8vent de faire voler en \u00e9clat le dogme du r\u00e9chauffement li\u00e9 \u00e0 l\u2019effet de serre et aux comportements humains. L'annonce qui jette un froid Le 4\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\/Mojib-Latif.jpg?fit=448%2C320&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":25660,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-photo-de-la-nasa-montre-un-etrange-phenomene-circulaire-dans-le-ciel\/","url_meta":{"origin":6518,"position":2},"title":"Une photo de la NASA montre un \u00e9trange ph\u00e9nom\u00e8ne circulaire dans le ciel","author":"Admin","date":"6 mars 2024","format":false,"excerpt":"Au d\u00e9but de l'ann\u00e9e, le satellite Terra de la NASA survolait le golfe du Mexique lorsque l'un de ses instruments a pris une photo de nuages \u00e9tranges. On aurait dit que quelqu'un avait donn\u00e9 un coup de poing dans le ciel. Ce ph\u00e9nom\u00e8ne inhabituel n'est pas nouveau. Selon la NASA,\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\/2024\/03\/nuage-cavum-circulaire-1.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/03\/nuage-cavum-circulaire-1.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/03\/nuage-cavum-circulaire-1.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/03\/nuage-cavum-circulaire-1.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":7384,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-nuages-polaires-vont-descendre-sur-la-france\/","url_meta":{"origin":6518,"position":3},"title":"Des nuages polaires vont descendre sur la France","author":"Admin","date":"18 juin 2015","format":false,"excerpt":"Habitu\u00e9s des cieux polaires, les \"nuages noctulescents\" sont de plus en plus fr\u00e9quemment visibles sous nos latitudes, au Royaume-Uni par exemple. Et s'ils descendent vers le Sud, c'est bien parce que l'activit\u00e9 humaine d\u00e9truit et modifie l'environnement. Formations nuageuses tr\u00e8s particuli\u00e8res, des \"nuages noctulescents\" ont r\u00e9cemment \u00e9t\u00e9 observ\u00e9s au Royaume-Uni.\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\/06\/nuages-noctulescents.jpg?fit=614%2C460&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/nuages-noctulescents.jpg?fit=614%2C460&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/nuages-noctulescents.jpg?fit=614%2C460&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":25580,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-curieuse-correlation-entre-les-taches-solaires-et-la-frequence-des-ouragans-majeurs\/","url_meta":{"origin":6518,"position":4},"title":"Une curieuse corr\u00e9lation entre les taches solaires et la fr\u00e9quence des ouragans majeurs","author":"Admin","date":"9 f\u00e9vrier 2024","format":false,"excerpt":"D'Andy May (2024) : \"Roger Pielke Jr. a post\u00e9 ce graphique (ci-dessous) de la fr\u00e9quence triennale des ouragans majeurs dans le monde (il utilise un simple d\u00e9compte) cr\u00e9\u00e9 par Ryan Maue (@RyanMaue). M. Maue a \u00e9galement publi\u00e9 ce graphique sur son twitter. Il s'agit d'un graphique invers\u00e9 des taches solaires,\u2026","rel":"","context":"Dans &quot;Ev\u00e8nement Brutal&quot;","block_context":{"text":"Ev\u00e8nement Brutal","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/evenement-brutal\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/02\/ouragan-dans-l-atlantique.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/02\/ouragan-dans-l-atlantique.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/02\/ouragan-dans-l-atlantique.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/02\/ouragan-dans-l-atlantique.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":16225,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-rayons-cosmiques-agiraient-fortement-sur-le-climat\/","url_meta":{"origin":6518,"position":5},"title":"Les rayons cosmiques agiraient fortement sur le climat","author":"Admin","date":"1 f\u00e9vrier 2018","format":false,"excerpt":"Des chercheurs viennent d'exhumer un processus inconnu jusqu'ici de formation de nuages \u00e0 partir du rayonnement cosmique. Il devrait \u00eatre int\u00e9gr\u00e9 aux mod\u00e8les climatiques. On savait d\u00e9j\u00e0 que l'atmosph\u00e8re terrestre re\u00e7oit en permanence des rayons cosmiques, soit des particules charg\u00e9es (\u00e9lectrons, ions) venant notamment du Soleil ou de supernov\u00e6 proches\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\/2018\/01\/rayonnement-cosmique-climat-nuages.png?fit=1024%2C511&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/01\/rayonnement-cosmique-climat-nuages.png?fit=1024%2C511&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/01\/rayonnement-cosmique-climat-nuages.png?fit=1024%2C511&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/01\/rayonnement-cosmique-climat-nuages.png?fit=1024%2C511&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6518","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=6518"}],"version-history":[{"count":3,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6518\/revisions"}],"predecessor-version":[{"id":6578,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6518\/revisions\/6578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/6519"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=6518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=6518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=6518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}