{"id":20978,"date":"2020-06-04T17:13:10","date_gmt":"2020-06-04T15:13:10","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=20978"},"modified":"2020-06-08T10:57:55","modified_gmt":"2020-06-08T08:57:55","slug":"chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/","title":{"rendered":"Chronique et explications d&rsquo;une QBO (vents \u00e9quatoriaux) \u00ab\u00a0d\u00e9r\u00e9gl\u00e9e\u00a0\u00bb"},"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>L\u2019oscillation quasi biennale (QBO) est un changement oscillatoire de la direction des vents dans la stratosph\u00e8re \u00e9quatoriale, jusqu&rsquo;\u00e0 environ 12 degr\u00e9s de l&rsquo;\u00e9quateur, ayant une p\u00e9riode entre 24 et 30 mois (de 26 \u00e0 29 mois selon Akstinas &amp; al. en 20152) ; 28 mois en moyenne.<\/p>\n<p>Les vents changent d&rsquo;abord de direction g\u00e9n\u00e9rale de l&rsquo;ouest vers l&rsquo;est, et vice-versa, au sommet de la stratosph\u00e8re \u00e0 environ 30 km d&rsquo;altitude. Le changement se propage vers le bas \u00e0 une vitesse de 1 km par mois mais d\u00e9cro\u00eet quand il atteint 23 km d&rsquo;altitude. Cette propagation est plus irr\u00e9guli\u00e8re avec les vents d&rsquo;est et l&rsquo;amplitude de ce changement est le double de celle des vents d&rsquo;ouest.<\/p>\n<p>La QBO connait actuellement une nouvelle anomalie in\u00e9dite, d\u00e9j\u00e0 observ\u00e9e en 2015. En 2015, des scientifiques de l&rsquo;Institut Max Planck ont publi\u00e9 un article sur une anomalie de grande ampleur dans ce cycle, jamais observ\u00e9e depuis que les mesures existent soit environ 60 ans. R\u00e9cemment, les ondes de gravit\u00e9 ont \u00e9t\u00e9 reconnues comme un des facteurs majeurs de la QBO. Les donn\u00e9es de la <a href=\"https:\/\/psl.noaa.gov\/data\/correlation\/qbo.data\" target=\"_blank\" rel=\"noopener noreferrer\">QBO peuvent \u00eatre trouv\u00e9es ici<\/a>. Apr\u00e8s \u00eatre pass\u00e9es en n\u00e9gatif debut janvier 2020, elle semble vouloir repasser en positif.<\/p>\n<p>En m\u00e9t\u00e9orologie, on d\u00e9signe par onde de gravit\u00e9 les variations de pression atmosph\u00e9rique concentriques cr\u00e9\u00e9es par la chute d&rsquo;une masse d&rsquo;air (par exemple en raison du relief du terrain) et qui subit la pouss\u00e9e d&rsquo;Archim\u00e8de car elle a une densit\u00e9 diff\u00e9rente de l&rsquo;environnement. Ces ondes sont l&rsquo;\u00e9quivalent des vagues dans un milieu en trois dimensions. Elles peuvent mener \u00e0 la cr\u00e9ation de bandes nuageuses parall\u00e8les, correspondant aux minima et maxima de pression (\u00ab\u00a0cr\u00eates\u00a0\u00bb de l&rsquo;onde), par exemple des Cirrus vertebratus.<\/p>\n<p>Le changement climatique n&rsquo;est peut-\u00eatre pas la source premi\u00e8re de cette anomalie, mais il pourrait avoir exacerb\u00e9 certaines chaines de r\u00e9actions atmosph\u00e9riques.<\/p>\n<p>Anomalies de la QBO de 2020 :<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20980\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/qbo-2020\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?fit=2560%2C1162&amp;ssl=1\" data-orig-size=\"2560,1162\" 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=\"qbo-2020\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?fit=300%2C136&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?fit=800%2C363&amp;ssl=1\" class=\"alignnone size-full wp-image-20980\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?resize=2560%2C1162&#038;ssl=1\" alt=\"\" width=\"2560\" height=\"1162\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?w=2560&amp;ssl=1 2560w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?resize=300%2C136&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?resize=800%2C363&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?resize=768%2C349&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?resize=1536%2C697&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?resize=2048%2C930&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20981\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/qbo-2020-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?fit=1156%2C1118&amp;ssl=1\" data-orig-size=\"1156,1118\" 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=\"qbo-2020-1\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?fit=300%2C290&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?fit=800%2C774&amp;ssl=1\" class=\"alignnone size-full wp-image-20981\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?resize=1156%2C1118&#038;ssl=1\" alt=\"\" width=\"1156\" height=\"1118\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?w=1156&amp;ssl=1 1156w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?resize=300%2C290&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?resize=800%2C774&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-1.jpg?resize=768%2C743&amp;ssl=1 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>Hypoth\u00e8ses explicatives<\/p>\n<p>Le coupable pourrait \u00eatre l&rsquo;El Ni\u00f1o de l&rsquo;hiver 2015, pour deux raisons : il a apport\u00e9 des eaux anormalement chaudes \u00e0 l&rsquo;est du Pacifique \u00e9quatorial ; il a aussi modifi\u00e9 les ondes atmosph\u00e9riques et des conditions m\u00e9t\u00e9orologiques bien au-del\u00e0 des tropiques. 2014 et 2015 ont encore \u00e9t\u00e9 des ann\u00e9es records en termes de chaleur.<\/p>\n<p>Une autre possibilit\u00e9, peut-\u00eatre en lien avec la pr\u00e9c\u00e9dente, <strong>serait qu&rsquo;une autre anomalie serait en cause, voire un facteur d\u00e9clenchant : un \u00ab \u00a0\u00bb blob \u00a0\u00bb d&rsquo;eau chaude \u00bb<\/strong> du nord de l&rsquo;oc\u00e9an Pacifique constat\u00e9 depuis 2013 ait contribu\u00e9 \u00e0 un r\u00e9chauffement stratosph\u00e9rique anormal (hivers 2013-2014 et 2015-2016) dans les hautes latitudes de l&rsquo;h\u00e9misph\u00e8re Nord12.<\/p>\n<p>L&rsquo;oc\u00e9an Pacifique joue un r\u00f4le majeur sur la QBO.<\/p>\n<p>Mais que s&rsquo;est il pass\u00e9 cette ann\u00e9e pour que la QBO puisse en \u00eatre affect\u00e9e ? Nous n&rsquo;avions pas de El Nino !<\/p>\n<p>Fin d\u00e9cembre, on pouvait constater cette forte anomalie positive dans le Pacifique Sud n\u00e9e des incendies en Australie :<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20979\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/blob-decembre2019\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blob-decembre2019.png?fit=540%2C281&amp;ssl=1\" data-orig-size=\"540,281\" 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=\"blob-decembre2019\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blob-decembre2019.png?fit=300%2C156&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blob-decembre2019.png?fit=540%2C281&amp;ssl=1\" class=\" wp-image-20979 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blob-decembre2019.png?resize=659%2C343&#038;ssl=1\" alt=\"\" width=\"659\" height=\"343\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blob-decembre2019.png?w=540&amp;ssl=1 540w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blob-decembre2019.png?resize=300%2C156&amp;ssl=1 300w\" sizes=\"auto, (max-width: 659px) 100vw, 659px\" \/><\/p>\n<p>Mais le blob dans le Pacifique Nord est revenu d\u00e8s septembre 2019 comme en 2015 :<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20982\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/blobs-pacifiquenord-2015-2019\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-pacifiquenord-2015-2019.png?fit=540%2C281&amp;ssl=1\" data-orig-size=\"540,281\" 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=\"blobs-pacifiquenord-2015-2019\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-pacifiquenord-2015-2019.png?fit=300%2C156&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-pacifiquenord-2015-2019.png?fit=540%2C281&amp;ssl=1\" class=\" wp-image-20982 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-pacifiquenord-2015-2019.png?resize=653%2C340&#038;ssl=1\" alt=\"\" width=\"653\" height=\"340\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-pacifiquenord-2015-2019.png?w=540&amp;ssl=1 540w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-pacifiquenord-2015-2019.png?resize=300%2C156&amp;ssl=1 300w\" sizes=\"auto, (max-width: 653px) 100vw, 653px\" \/><\/p>\n<p>Et voici les Blobs dans l&rsquo;ocean pacifique nord et sud en avril 2020 :<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20983\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/blobs-avril2020\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-avril2020.png?fit=709%2C504&amp;ssl=1\" data-orig-size=\"709,504\" 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=\"blobs-avril2020\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-avril2020.png?fit=300%2C213&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-avril2020.png?fit=709%2C504&amp;ssl=1\" class=\"size-full wp-image-20983 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-avril2020.png?resize=709%2C504&#038;ssl=1\" alt=\"\" width=\"709\" height=\"504\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-avril2020.png?w=709&amp;ssl=1 709w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/blobs-avril2020.png?resize=300%2C213&amp;ssl=1 300w\" sizes=\"auto, (max-width: 709px) 100vw, 709px\" \/><\/p>\n<p>Ces blobs ont des cons\u00e9quences sur la faune :<\/p>\n<p>Des scientifiques ont r\u00e9cemment fait \u00e9tat d\u2019une autre catastrophe biologique d\u00e9vastatrice, caus\u00e9e par une \u00e9tendue d\u2019eau anormalement chaude dans l\u2019oc\u00e9an Pacifique, connue sous le nom de \u201d Blob \u201c.<\/p>\n<p>Cette concentration de chaleur marine s\u2019est maintenue dans le nord-est du Pacifique entre 2013 et 2016, et les chercheurs pensent maintenant qu\u2019elle est en grande partie responsable de la mort de pr\u00e8s d\u2019un million de guillemots de Tro\u00efl (Uria aalge), entre autres animaux sauvages. Cela en fait la plus grande mort d\u2019oiseaux de mer de l\u2019histoire.<\/p>\n<figure id=\"attachment_20984\" aria-describedby=\"caption-attachment-20984\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20984\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/guillemot-de-troil\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?fit=1000%2C751&amp;ssl=1\" data-orig-size=\"1000,751\" 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=\"Guillemot-de-Tro\u00efl\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;credit : https:\/\/www.gurumed.org\/2020\/01\/20\/un-blob-chaud-de-locan-pacifique-lorigine-de-la-plus-grande-mortalit-doiseaux-de-mer-jamais-constate\/&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?fit=300%2C225&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?fit=800%2C601&amp;ssl=1\" class=\"size-full wp-image-20984\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=1000%2C751&#038;ssl=1\" alt=\"\" width=\"1000\" height=\"751\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?w=1000&amp;ssl=1 1000w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=800%2C601&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=80%2C60&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=768%2C577&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=174%2C131&amp;ssl=1 174w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Guillemot-de-Tro%C3%AFl.jpg?resize=70%2C53&amp;ssl=1 70w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-20984\" class=\"wp-caption-text\">credit : https:\/\/www.gurumed.org\/2020\/01\/20\/un-blob-chaud-de-locan-pacifique-lorigine-de-la-plus-grande-mortalit-doiseaux-de-mer-jamais-constate\/<\/figcaption><\/figure>\n<p>Une autre cons\u00e9quence directe pourrait \u00eatre une perturbation des pr\u00e9visions saisonni\u00e8res car cette anomalie n&rsquo;est pas pr\u00e9vue par les mod\u00e8les m\u00e9t\u00e9orologiques classiques qui s&rsquo;appuient sur la QBO pour leurs pr\u00e9visions \u00e0 moyen terme (pr\u00e9visions saisonni\u00e8res) et qui la consid\u00e8rent comme l&rsquo;un des stabilisateurs du climat mondial.<\/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 vagues de chaleur localis\u00e9es dans les oc\u00e9ans sont devenues plus fr\u00e9quentes au cours du si\u00e8cle dernier et on s\u2019attend \u00e0 ce que leur fr\u00e9quence augmente encore \u00e0 mesure que la plan\u00e8te se r\u00e9chauffera. Cette situation particuli\u00e8re a \u00e9t\u00e9 exacerb\u00e9e par le r\u00e9chauffement des vents d\u00fb \u00e0 El Ni\u00f1o en 2015 et 2016. Seulement voil\u00e0, en 2019 et 2020, nous n&rsquo;avons pas eu de El Nino. Alors qu&rsquo;en est il exactement ?<\/p>\n<p>Origine du Blob : Le blob a \u00e9t\u00e9 d\u00e9tect\u00e9 pour la premi\u00e8re fois \u00e0 l&rsquo;automne 2013 et au d\u00e9but de 2014 par Nicholas Bond de l&rsquo;Institut mixte pour l&rsquo;\u00e9tude de l&rsquo;atmosph\u00e8re et de l&rsquo;oc\u00e9an de l&rsquo;Universit\u00e9 de Washington, et ses coll\u00e8gues, lorsqu&rsquo;un grand plan circulaire d&rsquo;eau de mer n&rsquo;a pas refroidi comme pr\u00e9vu et est rest\u00e9 beaucoup plus chaud que les temp\u00e9ratures normales moyennes pour cet endroit et cette saison.<\/p>\n<p>Causes du Blob : La cause imm\u00e9diate du ph\u00e9nom\u00e8ne a \u00e9t\u00e9 les taux de perte de chaleur de la mer \u00e0 l&rsquo;atmosph\u00e8re inf\u00e9rieurs \u00e0 la normale, aggrav\u00e9s par une circulation de l&rsquo;eau inf\u00e9rieure \u00e0 la normale, ce qui a entra\u00een\u00e9 une couche d&rsquo;eau statique sup\u00e9rieure. Ces deux \u00e9l\u00e9ments sont attribu\u00e9s \u00e0 une r\u00e9gion de haute pression statique dans l&rsquo;atmosph\u00e8re, appel\u00e9e la cr\u00eate ridiculement r\u00e9siliente , qui existe depuis le printemps 2014. Le manque de mouvement d&rsquo;air a un impact sur les courants forc\u00e9s par le vent et l&rsquo;agitation de la surface g\u00e9n\u00e9r\u00e9e par le vent, des eaux. Ces facteurs ont \u00e0 leur tour influenc\u00e9 la m\u00e9t\u00e9o dans le nord-ouest du Pacifique \u00e0 partir de l&rsquo;hiver 2013-2014 et peuvent avoir \u00e9t\u00e9 associ\u00e9s \u00e0 l&rsquo;\u00e9t\u00e9 inhabituellement chaud connu dans le nord-ouest du Pacifique continental en 2014.<\/p>\n<p>La raison de ce ph\u00e9nom\u00e8ne n&rsquo;est pas claire. Certains experts consid\u00e8rent que le blob d&rsquo;eau chaude pr\u00e9sage un changement cyclique avec les eaux de surface de l&rsquo;oc\u00e9an Pacifique \u00e0 mi-latitude passant d&rsquo;une phase froide \u00e0 une phase chaude dans un cycle connu sous le nom d&rsquo;oscillation d\u00e9cennale du Pacifique (PDO).<\/p>\n<p>Ce changement mal compris se produit \u00e0 des intervalles irr\u00e9guliers d&rsquo;ann\u00e9es ou de d\u00e9cennies. Pendant une phase chaude, le Pacifique occidental devient plus frais et une partie de l&rsquo;oc\u00e9an oriental se r\u00e9chauffe; pendant la phase froide, ces changements s&rsquo;inversent. Les scientifiques croient qu&rsquo;une phase froide a commenc\u00e9 \u00e0 la fin des ann\u00e9es 1990 et l&rsquo;arriv\u00e9e du Blob pourrait \u00eatre le d\u00e9but de la prochaine phase chaude. Les phases PDO peuvent \u00e9galement \u00eatre li\u00e9es \u00e0 la probabilit\u00e9 d&rsquo;\u00e9v\u00e9nements El Ni\u00f1o.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20987\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/noaa-pdo\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?fit=789%2C460&amp;ssl=1\" data-orig-size=\"789,460\" 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=\"NOAA-PDO\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?fit=300%2C175&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?fit=789%2C460&amp;ssl=1\" class=\"size-full wp-image-20987 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?resize=789%2C460&#038;ssl=1\" alt=\"\" width=\"789\" height=\"460\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?w=789&amp;ssl=1 789w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?resize=300%2C175&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/NOAA-PDO.png?resize=768%2C448&amp;ssl=1 768w\" sizes=\"auto, (max-width: 789px) 100vw, 789px\" \/><\/p>\n<p>L&rsquo;oscillation d\u00e9cennale du Pacifique ( PDO ) est un mod\u00e8le r\u00e9current et robuste de variabilit\u00e9 du climat oc\u00e9an-atmosph\u00e8re centr\u00e9 sur le bassin du Pacifique \u00e0 la latitude moyenne. La PDO est d\u00e9tect\u00e9e comme eau de surface chaude ou froide dans l&rsquo;oc\u00e9an Pacifique.<\/p>\n<p>Donc la conclusion de tout ceci, nous assisterions \u00e0 un changement de phase de la PDO et pendant l&rsquo;intervalle, il y a ces blobs qui appara\u00eetraient. Ceux ci pourraient \u00eatre accentu\u00e9s par le r\u00e9chauffement qui est constat\u00e9. A moins que tout ceci soit juste un ph\u00e9nom\u00e8ne totalement naturel qui serait singuli\u00e8rement impact\u00e9 par un autre indice celui de l&rsquo;IPO :&nbsp;<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20985\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/interdecadal-pacific-oscillation\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Interdecadal-Pacific-Oscillation.jpg?fit=668%2C616&amp;ssl=1\" data-orig-size=\"668,616\" 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=\"Interdecadal-Pacific-Oscillation\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Interdecadal-Pacific-Oscillation.jpg?fit=300%2C277&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Interdecadal-Pacific-Oscillation.jpg?fit=668%2C616&amp;ssl=1\" class=\"size-full wp-image-20985 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Interdecadal-Pacific-Oscillation.jpg?resize=668%2C616&#038;ssl=1\" alt=\"\" width=\"668\" height=\"616\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Interdecadal-Pacific-Oscillation.jpg?w=668&amp;ssl=1 668w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/Interdecadal-Pacific-Oscillation.jpg?resize=300%2C277&amp;ssl=1 300w\" sizes=\"auto, (max-width: 668px) 100vw, 668px\" \/><\/p>\n<p>ici PDO et IPO :<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"20986\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/chronique-et-explications-dune-qbo-vents-equatoriaux-dereglee\/ipo-pdo\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/ipo-pdo.gif?fit=1200%2C725&amp;ssl=1\" data-orig-size=\"1200,725\" 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=\"ipo-pdo\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/ipo-pdo.gif?fit=300%2C181&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/ipo-pdo.gif?fit=800%2C483&amp;ssl=1\" class=\"alignnone size-full wp-image-20986\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/ipo-pdo.gif?resize=1200%2C725&#038;ssl=1\" alt=\"\" width=\"1200\" height=\"725\"\/><\/p>\n<p>Et voici un article d&rsquo;une \u00e9tude qui quantifie <a href=\"https:\/\/global-climat.com\/2016\/09\/10\/une-etude-quantifie-la-contribution-du-pacifique-aux-variations-climatiques\/\" target=\"_blank\" rel=\"noopener noreferrer\">le r\u00f4le de l&rsquo;IPO du Pacifique dans les variations climatiques ICI<\/a><\/p>\n<p>Les anomalies de la QBO trouveraient donc leurs origines dans ce qui se passe actuellement dans l\u2019oc\u00e9an Pacifique.&nbsp;<\/p>\n<p>Adaptation et r\u00e9alisation <a href=\"https:\/\/www.laterredufutur.com\/accueil\">Terra Projects<\/a><\/p>\n<p>sources : <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Onde_de_gravit%C3%A9\" target=\"_blank\" rel=\"noopener noreferrer\">Ondes de gravit\u00e9<\/a> \/ <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Oscillation_quasi_biennale\" target=\"_blank\" rel=\"noopener noreferrer\">Oscillation_quasi_biennale<\/a> \/ <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Oscillation_quasi_biennale?\" target=\"_blank\" rel=\"noopener noreferrer\">Oscillation_quasi_biennale<\/a> \/ <a href=\"https:\/\/www.gurumed.org\/2020\/01\/20\/un-blob-chaud-de-locan-pacifique-lorigine-de-la-plus-grande-mortalit-doiseaux-de-mer-jamais-constate\/\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.gurumed.org\/<\/a> \/ <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pacific_decadal_oscillation\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/en.wikipedia.org\/<\/a> \/<\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"20978\">(867)<\/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>L\u2019oscillation quasi biennale (QBO) est un changement oscillatoire de la direction des vents dans la stratosph\u00e8re \u00e9quatoriale, jusqu&rsquo;\u00e0 environ 12&#8230;<\/p>\n","protected":false},"author":1,"featured_media":20980,"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":"Chronique et explications d'une #QBO (vents \u00e9quatoriaux) \"d\u00e9r\u00e9gl\u00e9e\" @laterredufutur.com Terra Projects","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":[20,32],"tags":[239,41,246,7428,1697,147,1412,190],"class_list":["post-20978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climat","category-meteorologie","tag-anomalie","tag-climat","tag-indices","tag-ipo","tag-ocean-pacifique","tag-pdo","tag-qbo","tag-vents","wpcat-20-id","wpcat-32-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/06\/qbo-2020-scaled.jpg?fit=2560%2C1162&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-5sm","jetpack-related-posts":[{"id":1078,"url":"https:\/\/www.laterredufutur.com\/accueil\/relation-qboactivite-solaire-explication-de-son-mecanisme\/","url_meta":{"origin":20978,"position":0},"title":"Relation QBO\/activit\u00e9 solaire, explication de son m\u00e9canisme","author":"Admin","date":"25 octobre 2012","format":false,"excerpt":"Traduction par Mike et adaptation de la Terre Du \u00a0Futur \"Source http:\/\/daltonsminima.altervista.org\/ \"Riccardo\" - Dans cet article, je vais expliquer les m\u00e9canismes o\u00f9 la faible activit\u00e9 solaire influence la saison hivernale mais pas seulement ca mais plusieurs choses. Nous savons d\u00e9j\u00e0 \u00e0 pr\u00e9sent (je l\u2019avais expliqu\u00e9 d\u00e9j\u00e0 dans le pr\u00e9c\u00e9dent\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":13233,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-sest-passe-quelque-chose-detrange-dans-la-stratosphere-equatoriale\/","url_meta":{"origin":20978,"position":1},"title":"Il s&rsquo;est pass\u00e9 quelque chose d&rsquo;\u00e9trange dans la stratosph\u00e8re \u00e9quatoriale","author":"Admin","date":"8 septembre 2016","format":false,"excerpt":"Un pattern de vent dans la stratosph\u00e8re, qui est rest\u00e9 inchang\u00e9 depuis 60 ans, vient de subir des changements. Les scientifiques cherchent toujours \u00e0 comprendre pourquoi, indique la NASA. Cette perturbation dans ce pattern (un ph\u00e9nom\u00e8ne que l'on peut observer de fa\u00e7on r\u00e9p\u00e9t\u00e9e lors de l'\u00e9tude de certains sujets) de\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\/04\/atmosphere-terre1.jpeg?fit=467%2C474&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2131,"url":"https:\/\/www.laterredufutur.com\/accueil\/hiver-2014-2015\/","url_meta":{"origin":20978,"position":2},"title":"Hiver 2014-2015","author":"Admin","date":"29 juillet 2014","format":false,"excerpt":"En terme de m\u00e9t\u00e9orologie, les ann\u00e9es se succ\u00e8dent et ne se ressemblent pas. Sur l'hiver dernier, nos pr\u00e9visions se sont av\u00e9r\u00e9es justes jusqu'au mois de janvier. Nos pr\u00e9visions ont \u00e9t\u00e9 erron\u00e9es sur le mois de F\u00e9vrier et le mois de Mars 2014. Cet hiver est rest\u00e9 tr\u00e8s doux sur l'Europe\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\/wordpress\/wp-content\/uploads\/2014\/07\/laterredufutur.com_photos_soleil-calme-juillet-2014.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1079,"url":"https:\/\/www.laterredufutur.com\/accueil\/ensoqbostratosphere\/","url_meta":{"origin":20978,"position":3},"title":"ENSO\/QBO\/Stratosph\u00e8re","author":"Admin","date":"23 octobre 2012","format":false,"excerpt":"Par Mike : Sur ce sujet, je vais parler du comportement de l'ENSO sur la stratosph\u00e8re de l'arctique et les cons\u00e9quences sur le climat sur l'h\u00e9misph\u00e8re nord. Des preuves qui permettront de mieux pr\u00e9voir nos hivers europ\u00e9ens dans le futur Le cycle a une remarquable capacit\u00e9 \u00e0 influencer les caract\u00e9ristiques\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8294,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-circulation-de-brewer-dobson\/","url_meta":{"origin":20978,"position":4},"title":"La circulation de Brewer-Dobson","author":"Admin","date":"19 septembre 2015","format":false,"excerpt":"La circulation de Brewer-Dobson par Nanuq.\u00a0Je m'y suis repris \u00e0 plusieurs reprises. Sujet passionnant mais compliqu\u00e9!\u00a0Cette partie ne concerne que le pacifique \u00e9quatorial. Il existe d'autre ondes de gravit\u00e9 (bruits) dans l'atlantique et ailleurs dans le monde. Autres exemples, les cyclones, typhons etc..qui sont issus de la force de Coriolis,\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\/09\/brewer-dobson.jpg?fit=462%2C357&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":22995,"url":"https:\/\/www.laterredufutur.com\/accueil\/lhiver-2021-2022\/","url_meta":{"origin":20978,"position":5},"title":"L&rsquo;Hiver 2021-2022","author":"Admin","date":"8 septembre 2021","format":false,"excerpt":"Nous avons d\u00e9marr\u00e9 ce nouvel automne m\u00e9t\u00e9orologique. Pour ce qui concerne notre futur hiver 2021-2022, les pr\u00e9visions saisonni\u00e8res habituelles se profilent d\u00e9j\u00e0. Les pr\u00e9visions saisonni\u00e8res de l'ann\u00e9e derni\u00e8re ont \u00e9t\u00e9 tr\u00e8s encourageantes par leurs fiabilit\u00e9s \u00e0 hauteur de 70%. On peut revoir l'article ici. Pour appr\u00e9cier ce futur hiver, nous\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\/2021\/09\/tempete.jpg?fit=1050%2C689&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/tempete.jpg?fit=1050%2C689&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/tempete.jpg?fit=1050%2C689&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/tempete.jpg?fit=1050%2C689&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/tempete.jpg?fit=1050%2C689&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20978","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=20978"}],"version-history":[{"count":6,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20978\/revisions"}],"predecessor-version":[{"id":20993,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20978\/revisions\/20993"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/20980"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=20978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=20978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=20978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}