{"id":21986,"date":"2021-02-15T16:46:12","date_gmt":"2021-02-15T15:46:12","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=21986"},"modified":"2021-02-15T16:46:12","modified_gmt":"2021-02-15T15:46:12","slug":"anomalie-inhabituelle-dans-latlantique-nord","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/","title":{"rendered":"Anomalie inhabituelle dans l&rsquo;Atlantique Nord"},"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>Une anomalie oc\u00e9anique inhabituelle est d\u00e9tect\u00e9e dans le Gulf Stream, non observ\u00e9e depuis au moins 150 ans, ce qui rev\u00eat une importance alors que nous affrontons les prochaines saisons m\u00e9t\u00e9orologiques.<\/p>\n<p>Les zones des oc\u00e9ans du globe se r\u00e9chauffent et se refroidissent constamment. Mais r\u00e9cemment, une anomalie inhabituellement forte s&rsquo;est d\u00e9velopp\u00e9e dans le Gulf Stream. La m\u00e9t\u00e9o aux \u00c9tats-Unis et en Europe d\u00e9pend beaucoup de ce courant oc\u00e9anique, il est donc important que nous comprenions toute l&rsquo;histoire et la signification de cette forte anomalie.<\/p>\n<p>Les oc\u00e9ans ont un r\u00f4le crucial dans le temps et le climat du monde, de sorte que toute anomalie inhabituelle est prise au s\u00e9rieux. Comme nous allons le voir, le Gulf Stream fait partie de quelque chose de beaucoup plus grand et de plus puissant, donc une anomalie dans le Gulf Stream peut \u00eatre (et est probablement) le signe de quelque chose de beaucoup plus grand en pr\u00e9paration.<\/p>\n<p>Le Gulf Stream est un fort courant oc\u00e9anique qui apporte de l&rsquo;eau plus chaude du golfe du Mexique \u00e0 l&rsquo;oc\u00e9an Atlantique. Il s&rsquo;\u00e9tend tout le long de la c\u00f4te est des \u00c9tats-Unis , o\u00f9 il commence \u00e0 se tourner vers le nord-ouest de l&rsquo;Europe.<\/p>\n<p>ANOMALIES INHABITUELLES<\/p>\n<p>Mais parfois, nous devons prendre un autre regard pour \u00e9valuer l&rsquo;\u00e9tat du Gulf Stream. Une de ces approches consiste \u00e0 utiliser des anomalies. Une anomalie est quelque chose qui s&rsquo;\u00e9carte de ce qui est standard, normal ou attendu \u00e0 un moment ou \u00e0 un endroit donn\u00e9.<\/p>\n<p>Dans les oc\u00e9ans, le plus couramment utilis\u00e9 est bien entendu l&rsquo;anomalie de temp\u00e9rature. L&rsquo;image ci-dessous montre l&rsquo;analyse des anomalies dans l&rsquo;Atlantique Nord, o\u00f9 la r\u00e9gion du Gulf Stream se d\u00e9marque vraiment. Nous pouvons voir que le courant est plus chaud que la normale, avec certaines parties du nord de 6 \u00b0C \u00e0 8 \u00b0C au-dessus de la normale.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21987\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/gulf-stream-2021\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"gulf-stream-2021\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-21987\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>C&rsquo;est une importante anomalie, et les temp\u00e9ratures de l&rsquo;eau de 6 \u00e0 8 degr\u00e9s au-dessus de la normale peuvent fournir une \u00e9nergie importante aux syst\u00e8mes m\u00e9t\u00e9orologiques de la r\u00e9gion.<\/p>\n<p>Les temp\u00e9ratures r\u00e9elles sont comprises entre 14 et 18 degr\u00e9s Celsius aux plus proches de la c\u00f4te nord-est des \u00c9tats-Unis. Cela peut devenir une source importante de masse d&rsquo;air plus chaude pour faire face \u00e0 une masse d&rsquo;air arctique glaciale du nord ou du nord-ouest. C&rsquo;est un sc\u00e9nario courant pour les fortes temp\u00eates de Nor&rsquo;easter dans le nord-est des \u00c9tats-Unis, o\u00f9 le Gulf Stream alimente les temp\u00eates en \u00e9nergie.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21988\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/gulf-stream-2021-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021-1.png?fit=700%2C498&amp;ssl=1\" data-orig-size=\"700,498\" 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=\"\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021-1.png?fit=300%2C213&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021-1.png?fit=700%2C498&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021-1.png?resize=700%2C498&#038;ssl=1\" alt=\"\" width=\"700\" height=\"498\" class=\"alignnone size-full wp-image-21988\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021-1.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulf-stream-2021-1.png?resize=300%2C213&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>De fortes anomalies dans le Gulf Stream ont d\u00e9j\u00e0 \u00e9t\u00e9 observ\u00e9es au cours des deux derniers mois. L&rsquo;image ci-dessous montre les anomalies mensuelles de la temp\u00e9rature de surface de la mer en d\u00e9cembre 2020. La zone du Gulf Stream se d\u00e9marque vraiment, et vous pouvez \u00e9galement voir la froide Nina dans l&rsquo;oc\u00e9an Pacifique.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21989\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/sst-decembre-2020-ocean-atlantique-et-pacifique\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-decembre-2020-ocean-atlantique-et-pacifique.png?fit=700%2C498&amp;ssl=1\" data-orig-size=\"700,498\" 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=\"sst-decembre-2020-ocean-atlantique et pacifique\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-decembre-2020-ocean-atlantique-et-pacifique.png?fit=300%2C213&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-decembre-2020-ocean-atlantique-et-pacifique.png?fit=700%2C498&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-decembre-2020-ocean-atlantique-et-pacifique.png?resize=700%2C498&#038;ssl=1\" alt=\"\" width=\"700\" height=\"498\" class=\"alignnone size-full wp-image-21989\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-decembre-2020-ocean-atlantique-et-pacifique.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-decembre-2020-ocean-atlantique-et-pacifique.png?resize=300%2C213&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>En janvier 2021, l&rsquo;anomalie est devenue encore plus forte, s&rsquo;\u00e9tendant sur une plus grande surface et avec un \u00e9cart encore plus fort par rapport \u00e0 la moyenne de long terme.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21990\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/sst-janvier-2021-ocean-atlantique-et-pacifique\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-janvier-2021-ocean-atlantique-et-pacifique.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"sst-janvier-2021-ocean-atlantique et pacifique\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-janvier-2021-ocean-atlantique-et-pacifique.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-janvier-2021-ocean-atlantique-et-pacifique.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-janvier-2021-ocean-atlantique-et-pacifique.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-21990\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-janvier-2021-ocean-atlantique-et-pacifique.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-janvier-2021-ocean-atlantique-et-pacifique.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Mais l&rsquo;anomalie atteint \u00e9galement les profondeurs. Ci-dessous, nous avons deux images, qui montrent l&rsquo;anomalie de temp\u00e9rature \u00e0 100m et 500m de profondeur. Et nous pouvons voir que la zone plus chaude du Gulf Stream descend avec la profondeur.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21991\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"anomalie-temperatures-profondeur-ocean-fevrier2021-100m\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-21991\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-100m.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21992\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"anomalie-temperatures-profondeur-ocean-fevrier2021-500m\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-21992\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/anomalie-temperatures-profondeur-ocean-fevrier2021-500m.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Mais comme vous le verrez maintenant, il y a peut-\u00eatre une raison plus importante \u00e0 cela, car le Gulf Stream est en fait une partie plus petite de quelque chose de plus grand.<\/p>\n<p>Le plus grand syst\u00e8me dans lequel s&rsquo;\u00e9coule le Gulf Stream est appel\u00e9 la circulation m\u00e9ridienne de renversement de l&rsquo;Atlantique, ou AMOC. L&rsquo;AMOC est un vaste syst\u00e8me de courants oc\u00e9aniques, comme un tapis roulant, entra\u00een\u00e9 par des diff\u00e9rences de temp\u00e9rature et de teneur en sel, ce qui affecte sa densit\u00e9. Le Gulf Stream n&rsquo;est que la partie superficielle de l&rsquo;AMOC dans l&rsquo;Atlantique Nord.<\/p>\n<p>L&rsquo;image ci-dessous du Met Office britannique montre l&rsquo;ensemble de la circulation oc\u00e9anique mondiale. Il est \u00e9galement connu sous le nom du grand Convoyeur ou encore de circulation Thermohaline. AMOC est le syst\u00e8me de courants oc\u00e9aniques qui couvre l&rsquo;Atlantique Nord et Sud.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21993\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/grand-convoyeur-circulation-thermohaline\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?fit=700%2C394&amp;ssl=1\" data-orig-size=\"700,394\" 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;1&quot;}\" data-image-title=\"grand-convoyeur-circulation-thermohaline\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?fit=300%2C169&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?fit=700%2C394&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?resize=700%2C394&#038;ssl=1\" alt=\"\" width=\"700\" height=\"394\" class=\"alignnone size-full wp-image-21993\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?resize=580%2C326&amp;ssl=1 580w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/grand-convoyeur-circulation-thermohaline.jpg?resize=174%2C98&amp;ssl=1 174w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Lorsque le courant chaud circule vers le nord, il se refroidit et une certaine \u00e9vaporation se produit, ce qui augmente la quantit\u00e9 de sel dans l&rsquo;eau. Une temp\u00e9rature basse et une teneur \u00e9lev\u00e9e en sel rendent l&rsquo;eau plus dense et plus lourde, de sorte que cette eau dense s&rsquo;enfonce profond\u00e9ment dans l&rsquo;oc\u00e9an.<\/p>\n<p>L&rsquo;image ci-dessous montre la salinit\u00e9 de la surface de l&rsquo;oc\u00e9an ou la quantit\u00e9 de sel dans l&rsquo;eau. Plus le nombre est \u00e9lev\u00e9, plus l&rsquo;eau est sal\u00e9e. Au-dessus de 35, nous avons encore des eaux sal\u00e9es, donc \u00e0 mesure que l&rsquo;eau se refroidit, elle s&rsquo;enfonce dans l&rsquo;extr\u00eame nord de l&rsquo;Atlantique.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21994\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/salinite-atlantique-nord-fevrier2021\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/salinite-atlantique-nord-fevrier2021.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"salinit\u00e9-atlantique-nord-fevrier2021\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/salinite-atlantique-nord-fevrier2021.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/salinite-atlantique-nord-fevrier2021.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/salinite-atlantique-nord-fevrier2021.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-21994\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/salinite-atlantique-nord-fevrier2021.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/salinite-atlantique-nord-fevrier2021.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Le courant froid et dense coule lentement vers le sud, \u00e0 plusieurs kilom\u00e8tres sous la surface de l&rsquo;oc\u00e9an. Finalement, il est ramen\u00e9 \u00e0 la surface et se r\u00e9chauffe dans un processus appel\u00e9 \u00abremont\u00e9e d&rsquo;eau\u00bb et la circulation est termin\u00e9e.<\/p>\n<p>La raison pour laquelle cela est important est que l&rsquo;AMOC fait partie int\u00e9grante de la m\u00e9t\u00e9o et du climat dans l&rsquo;h\u00e9misph\u00e8re Nord. Il transporte beaucoup d&rsquo;eaux plus chaudes et d&rsquo;\u00e9nergie vers le nord. L&rsquo;image ci-dessous se concentre sur la partie nord-atlantique de l&rsquo;AMOC.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21995\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/amoc-courant-nord-atlantique\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/AMOC-courant-nord-atlantique.png?fit=608%2C700&amp;ssl=1\" data-orig-size=\"608,700\" 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=\"AMOC-courant-nord-atlantique\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/AMOC-courant-nord-atlantique.png?fit=261%2C300&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/AMOC-courant-nord-atlantique.png?fit=608%2C700&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/AMOC-courant-nord-atlantique.png?resize=608%2C700&#038;ssl=1\" alt=\"\" width=\"608\" height=\"700\" class=\"alignnone size-full wp-image-21995\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/AMOC-courant-nord-atlantique.png?w=608&amp;ssl=1 608w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/AMOC-courant-nord-atlantique.png?resize=261%2C300&amp;ssl=1 261w\" sizes=\"auto, (max-width: 608px) 100vw, 608px\" \/><\/p>\n<p>Il y a toujours une peur que l&rsquo;AMOC puisse s&rsquo;arr\u00eater \u00e0 un moment donn\u00e9, faisant du film \u00abLe Jour d&rsquo;Apr\u00e8s\u00bb une r\u00e9alit\u00e9. Dans ce c\u00e9l\u00e8bre film, l&rsquo;AMOC s&rsquo;est arr\u00eat\u00e9, amor\u00e7ant une nouvelle \u00e8re glaciaire .<\/p>\n<p>Bien que la r\u00e9alit\u00e9 soit quelque peu diff\u00e9rente, nous regarderons l&rsquo;\u00e9tat de l&rsquo;AMOC, qui montre que cette circulation s&rsquo;affaiblit effectivement.<\/p>\n<p>L&rsquo;image ci-dessous montre l&rsquo;oc\u00e9an Atlantique Nord divis\u00e9 en deux zones principales. Sur la c\u00f4te des \u00c9tats-Unis se trouve la zone chaude du Gulf Stream, et la zone bleue est l&rsquo;endroit o\u00f9 le Gulf Stream lib\u00e8re sa chaleur et s&rsquo;enfonce dans les profondeurs.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21996\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/amoc-gulf-stream\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc-gulf-stream.png?fit=700%2C328&amp;ssl=1\" data-orig-size=\"700,328\" 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=\"amoc-gulf-stream\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc-gulf-stream.png?fit=300%2C141&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc-gulf-stream.png?fit=700%2C328&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc-gulf-stream.png?resize=700%2C328&#038;ssl=1\" alt=\"\" width=\"700\" height=\"328\" class=\"alignnone size-full wp-image-21996\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc-gulf-stream.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc-gulf-stream.png?resize=300%2C141&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Les graphiques de gauche montrent la progression de la temp\u00e9rature au fil du temps. La r\u00e9gion du Gulf Stream se r\u00e9chauffe, tandis que l&rsquo;Atlantique Nord se refroidit au fil du temps. La diff\u00e9rence relative entre ces deux domaines est consid\u00e9r\u00e9e comme une estimation de la force de l&rsquo;AMOC.<\/p>\n<p>Nous avons produit un graphique qui montre la diff\u00e9rence relative entre ces deux domaines. Nous pouvons voir que depuis au moins les ann\u00e9es 1900, il y avait une tendance \u00e0 la baisse lente mais constante. Surtout au cours des 40 derni\u00e8res ann\u00e9es, nous avons constat\u00e9 une diff\u00e9rence n\u00e9gative plus forte dans ces deux domaines, indiquant un probable affaiblissement suppl\u00e9mentaire de l&rsquo;AMOC.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21997\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/temperatures-surface-atlantique-nord\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-surface-atlantique-nord.png?fit=700%2C305&amp;ssl=1\" data-orig-size=\"700,305\" 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=\"temperatures-surface-atlantique-nord\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-surface-atlantique-nord.png?fit=300%2C131&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-surface-atlantique-nord.png?fit=700%2C305&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-surface-atlantique-nord.png?resize=700%2C305&#038;ssl=1\" alt=\"\" width=\"700\" height=\"305\" class=\"alignnone size-full wp-image-21997\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-surface-atlantique-nord.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-surface-atlantique-nord.png?resize=300%2C131&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Les donn\u00e9es de base de ce graphique proviennent de l&rsquo;ensemble de donn\u00e9es ERSSTv5 de la NOAA. C&rsquo;est une combinaison d&rsquo;observations et de reconstructions, en prenant toutes les donn\u00e9es disponibles et les techniques modernes, pour reconstruire les temp\u00e9ratures de surface de la mer jusqu&rsquo;\u00e0 1854. Les donn\u00e9es ne sont pas exactes \u00e0 100% aussi loin, mais il a \u00e9t\u00e9 prouv\u00e9 qu&rsquo;elles fonctionnent tr\u00e8s bien pour les p\u00e9riodes modernes.<\/p>\n<p>Maintenant, le graphique suivant est encore plus int\u00e9ressant, car il montre deux images. Sur la gauche, nous avons une simulation de mod\u00e8le informatique, que se passerait-il si l&rsquo;AMOC s&rsquo;affaiblissait. Et sur la droite, nous avons l&rsquo;analyse r\u00e9elle du si\u00e8cle dernier, qui montre exactement le m\u00eame sc\u00e9nario. Cela soutient fortement l&rsquo;id\u00e9e que l&rsquo;AMOC perd effectivement de ses forces.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21998\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/amoc\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc.jpg?fit=700%2C491&amp;ssl=1\" data-orig-size=\"700,491\" 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;1&quot;}\" data-image-title=\"amoc\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc.jpg?fit=300%2C210&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc.jpg?fit=700%2C491&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc.jpg?resize=700%2C491&#038;ssl=1\" alt=\"\" width=\"700\" height=\"491\" class=\"alignnone size-full wp-image-21998\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc.jpg?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/amoc.jpg?resize=300%2C210&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/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>Cette signature de temp\u00e9ratures de la zone chaude du Gulf Stream et de l&rsquo;Atlantique Nord froid est l&rsquo;un des indicateurs les plus forts de l&rsquo; affaiblissement de l&rsquo; AMOC. Il y a aussi des observations directes faites avec des instruments, qui ont objectivement confirm\u00e9 que la circulation nord-atlantique est effectivement en d\u00e9clin.<\/p>\n<p>On peut \u00e9galement voir la signature sur la tendance \u00e0 long terme des temp\u00e9ratures dans le monde. Bien que la plupart des r\u00e9gions se r\u00e9chauffent lentement, l&rsquo;Atlantique Nord reste une r\u00e9gion qui d\u00e9fie tout r\u00e9chauffement et se refroidit lentement. Par rapport \u00e0 la zone du Gulf Stream qui se r\u00e9chauffe, c&rsquo;est une indication directe de l&rsquo;affaiblissement de la circulation oc\u00e9anique.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"21999\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/globe-rechauffement\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/globe-rechauffement.jpg?fit=700%2C385&amp;ssl=1\" data-orig-size=\"700,385\" 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;1&quot;}\" data-image-title=\"globe-rechauffement\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/globe-rechauffement.jpg?fit=300%2C165&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/globe-rechauffement.jpg?fit=700%2C385&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/globe-rechauffement.jpg?resize=700%2C385&#038;ssl=1\" alt=\"\" width=\"700\" height=\"385\" class=\"alignnone size-full wp-image-21999\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/globe-rechauffement.jpg?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/globe-rechauffement.jpg?resize=300%2C165&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Il y a plus d&rsquo;une raison pour laquelle l&rsquo;AMOC s&rsquo;affaiblit. Le plus souvent mentionn\u00e9 ou le plus probable est l&rsquo;induction de l&rsquo;eau douce dans l&rsquo;Atlantique Nord \u00e0 partir de la fonte des glaces de mer au Groenland et dans l&rsquo;Arctique.<\/p>\n<p>L&rsquo;eau douce r\u00e9duit la salinit\u00e9 de l&rsquo;Atlantique Nord, ce qui signifie que l&rsquo;eau n&rsquo;est pas suffisamment dense (lourde) pour couler. Cela ralentit la descente des eaux de surface, ralentissant effectivement le courant oc\u00e9anique.<\/p>\n<p>C&rsquo;est une chose que le film \u00abLe Jour d&rsquo;Apr\u00e8s\u00bb avait mentionn\u00e9 avec raison. Mais \u00e0 propos de cette \u00e8re glaciaire &#8230;<\/p>\n<p>De nombreuses simulations de mod\u00e8les ont \u00e9t\u00e9 faites pour essayer de calculer ce qui se passerait si l&rsquo;AMOC s&rsquo;arr\u00eatait compl\u00e8tement. Vous trouverez ci-dessous le r\u00e9sultat final, qui montre la diff\u00e9rence de temp\u00e9rature dans un monde avec un AMOC qui se serait stopp\u00e9 :<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22000\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/simulation-amoc-negatif\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/simulation-amoc-negatif.png?fit=700%2C422&amp;ssl=1\" data-orig-size=\"700,422\" 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=\"simulation-amoc-negatif\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/simulation-amoc-negatif.png?fit=300%2C181&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/simulation-amoc-negatif.png?fit=700%2C422&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/simulation-amoc-negatif.png?resize=700%2C422&#038;ssl=1\" alt=\"\" width=\"700\" height=\"422\" class=\"alignnone size-full wp-image-22000\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/simulation-amoc-negatif.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/simulation-amoc-negatif.png?resize=300%2C181&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Vous pouvez voir que tout l&rsquo;h\u00e9misph\u00e8re nord est plus froide de plusieurs degr\u00e9s. Mais ceci ne s&rsquo;arr\u00eaterait pas uniquement \u00e0 \u00e7a, des changements climatiques devraient se produire dans ce sc\u00e9nario, avec des mod\u00e8les de pression tr\u00e8s diff\u00e9rents et moins de pr\u00e9cipitations sur l&rsquo;Europe. Les hivers deviendraient plus rigoureux en Europe et aux \u00c9tats-Unis.<\/p>\n<p>Bien s\u00fbr, ce n&rsquo;est pas quelque chose qui se produirait du jour au lendemain, car ces changements peuvent prendre des d\u00e9cennies ou des si\u00e8cles. Mais nous savons que l&rsquo;AMOC est en d\u00e9clin, et sur la base de la quantit\u00e9 d&rsquo;eau douce induite par la fonte des glaces, nous pourrions voir des effets climatiques au cours de notre vie.<\/p>\n<p>Mais ce qui peut arriver presque du jour au lendemain, ce sont de fortes temp\u00eates et des ouragans. Et le Gulf Stream et l&rsquo;AMOC jouent un r\u00f4le important dans ces \u00e9v\u00e9nements, en particulier pour les \u00c9tats-Unis, comme vous l&rsquo;apprendrez bient\u00f4t.<\/p>\n<p>La forte anomalie actuelle dans le Gulf Stream est plut\u00f4t inhabituelle. Nous avons produit un autre graphique, qui montre l&rsquo;anomalie du Gulf Stream en janvier depuis 1854. Vous pouvez voir que le Gulf Stream en janvier 2021 \u00e9tait le plus chaud depuis au moins 150 ans.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22001\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/temperatures-gulfstream\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream.png?fit=700%2C279&amp;ssl=1\" data-orig-size=\"700,279\" 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=\"temperatures-gulfstream\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream.png?fit=300%2C120&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream.png?fit=700%2C279&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream.png?resize=700%2C279&#038;ssl=1\" alt=\"\" width=\"700\" height=\"279\" class=\"alignnone size-full wp-image-22001\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream.png?resize=300%2C120&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Il faut remonter \u00e0 1870 et 1867 pour trouver un janvier avec des anomalies similaires dans le Gulf Stream. Les donn\u00e9es ne sont qu&rsquo;une reconstitution \u00e0 partir d&rsquo;observations directes car aucun satellite n&rsquo;existait \u00e0 la fin des ann\u00e9es 1800. Vous pouvez voir sur les deux images ci-dessous, l&rsquo;anomalie chaude du Gulf Stream en janvier 1867 et 1870.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22002\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/temperatures-gulfstream-1867\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1867.png?fit=700%2C500&amp;ssl=1\" data-orig-size=\"700,500\" 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=\"temperatures-gulfstream-1867\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1867.png?fit=300%2C214&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1867.png?fit=700%2C500&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1867.png?resize=700%2C500&#038;ssl=1\" alt=\"\" width=\"700\" height=\"500\" class=\"alignnone size-full wp-image-22002\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1867.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1867.png?resize=300%2C214&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22003\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/temperatures-gulfstream-1870\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1870.png?fit=700%2C500&amp;ssl=1\" data-orig-size=\"700,500\" 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=\"temperatures-gulfstream-1870\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1870.png?fit=300%2C214&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1870.png?fit=700%2C500&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1870.png?resize=700%2C500&#038;ssl=1\" alt=\"\" width=\"700\" height=\"500\" class=\"alignnone size-full wp-image-22003\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1870.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/temperatures-gulfstream-1870.png?resize=300%2C214&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Mais si nous regardons l&rsquo;ensemble de donn\u00e9es, avec tous les mois, pas seulement janvier, nous pouvons voir que la r\u00e9gion du Gulf Stream se r\u00e9chauffe vraiment. C&rsquo;est quelque chose \u00e0 pr\u00e9voir lorsque l&rsquo;AMOC s&rsquo;affaiblit, comme nous l&rsquo;avons cit\u00e9 plus haut dans l&rsquo;article.<\/p>\n<p>Il est pr\u00e9f\u00e9rable d&rsquo;expliquer la raison pour laquelle cela se produit avec \u00ab\u00a0l&#8217;embouteillage\u00a0\u00bb. Comme l&rsquo;eau de l&rsquo;extr\u00eame nord de l&rsquo;Atlantique ne circule plus aussi vite, du fait qu&rsquo;elle est plus fra\u00eeche, elle ralentit le syst\u00e8me de transport oc\u00e9anique. Parce que le d\u00e9bit ralentit, l&rsquo;eau plus chaude du Gulf Stream n&rsquo;a nulle part o\u00f9 aller et s&rsquo;arr\u00eate, comme dans un \u00ab\u00a0embouteillage\u00a0\u00bb.<\/p>\n<p>Cela signifie que moins d&rsquo;eau chaude est transport\u00e9e vers l&rsquo;Atlantique Nord, qui s&rsquo;accumule maintenant sur la c\u00f4te Est des \u00c9tats-Unis. Cela peut \u00eatre dangereux, car cela devient une source d&rsquo;\u00e9nergie tr\u00e8s puissante pour alimenter les temp\u00eates du nord-est et les syst\u00e8mes tropicaux. Au fur et \u00e0 mesure que l&rsquo;eau plus chaude s&rsquo;accumule, la hauteur de la surface de la mer augmente \u00e9galement, ce qui signifie plus de risques de fortes ondes de temp\u00eate.<\/p>\n<p>L&rsquo;ouragan Sandy a \u00e9t\u00e9 l&rsquo;ouragan le plus meurtrier et le plus destructeur de la saison 2012 des ouragans dans l&rsquo;Atlantique. La temp\u00eate a caus\u00e9 pr\u00e8s de 70 milliards de dollars de d\u00e9g\u00e2ts et tu\u00e9 plus de 230 personnes dans huit pays, des Cara\u00efbes au Canada.<\/p>\n<p>Ci-dessous, une image satellite de l&rsquo; ouragan Sandy alors qu&rsquo;il se trouvait au-dessus du Gulf Stream chaud, l&rsquo;utilisant pour s&rsquo;alimenter.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22004\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/ouragan-sandy\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/ouragan-sandy.jpg?fit=700%2C467&amp;ssl=1\" data-orig-size=\"700,467\" 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;1&quot;}\" data-image-title=\"ouragan-sandy\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/ouragan-sandy.jpg?fit=300%2C200&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/ouragan-sandy.jpg?fit=700%2C467&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/ouragan-sandy.jpg?resize=700%2C467&#038;ssl=1\" alt=\"\" width=\"700\" height=\"467\" class=\"alignnone size-full wp-image-22004\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/ouragan-sandy.jpg?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/ouragan-sandy.jpg?resize=300%2C200&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Ci-dessous, nous avons une anomalie de temp\u00e9rature de surface de la mer avant le d\u00e9but de l&rsquo;ouragan Sandy. Nous pouvons voir qu&rsquo;une grande partie de l&rsquo;Atlantique tropical \u00e9tait plus chaude que la normale, ainsi que la r\u00e9gion du Gulf Stream. Plus l&rsquo;oc\u00e9an est chaud, plus il y a d&rsquo;\u00e9nergie disponible pour un syst\u00e8me tropical.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22005\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/sst-2012\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"sst-2012\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-22005\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>L&rsquo;anomalie de temp\u00e9rature de surface de la mer sur l&rsquo;image ci-dessous est apr\u00e8s le passage de l&rsquo;ouragan Sandy. Nous pouvons voir une \u00e9norme baisse de la temp\u00e9rature de l&rsquo;oc\u00e9an derri\u00e8re Sandy, des Cara\u00efbes occidentales jusqu&rsquo;\u00e0 la c\u00f4te est des \u00c9tats-Unis.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22006\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/sst-2012-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012-1.png?fit=700%2C464&amp;ssl=1\" data-orig-size=\"700,464\" 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=\"sst-2012\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012-1.png?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012-1.png?fit=700%2C464&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012-1.png?resize=700%2C464&#038;ssl=1\" alt=\"\" width=\"700\" height=\"464\" class=\"alignnone size-full wp-image-22006\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012-1.png?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/sst-2012-1.png?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>Sandy a utilis\u00e9 la chaleur de l&rsquo;oc\u00e9an et du Gulf Stream, la convertissant en \u00e9nergie. Les temp\u00e9ratures oc\u00e9aniques sont de 4 \u00e0 6 degr\u00e9s plus fra\u00eeches. Une partie du refroidissement est \u00e9galement due au m\u00e9lange des couches oc\u00e9aniques lors du passage d&rsquo;une temp\u00eate. Des eaux plus froides plus profondes remontent \u00e0 la surface alors que les mers deviennent tr\u00e8s agit\u00e9es sous un syst\u00e8me \u00e0 basse pression, se renversant et se m\u00e9langeant avec les eaux de surface plus chaudes.<\/p>\n<p>et le Futur ?<\/p>\n<p>\u00c0 quoi pouvons-nous nous attendre dans le futur? Les pr\u00e9visions oc\u00e9aniques actuelles montrent le maintien des eaux tr\u00e8s chaudes du Gulf Stream, tandis que l&rsquo;Atlantique Nord reste neutre \u00e0 plus froid que la normale.<\/p>\n<p>Ci-dessous, nous avons les pr\u00e9visions de temp\u00e9ratures de surface de la mer au d\u00e9but de l&rsquo; \u00e9t\u00e9, combin\u00e9es \u00e0 partir de diff\u00e9rents mod\u00e8les, montrant tous la m\u00eame chose. Il s&rsquo;agit d&rsquo;une anomalie importante, en fonction de son heure et de son emplacement, et peut \u00eatre pr\u00e9occupante, en particulier pour l&rsquo;est des \u00c9tats-Unis.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22007\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/projection-sst-atlantique-nord-2021\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.jpg?fit=700%2C465&amp;ssl=1\" data-orig-size=\"700,465\" 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;1&quot;}\" data-image-title=\"projection-sst-atlantique-nord-2021\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.jpg?fit=300%2C199&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.jpg?fit=700%2C465&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.jpg?resize=700%2C465&#038;ssl=1\" alt=\"\" width=\"700\" height=\"465\" class=\"alignnone size-full wp-image-22007\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.jpg?w=700&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.jpg?resize=300%2C199&amp;ssl=1 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>En regardant la fin de l&rsquo;\u00e9t\u00e9 et le d\u00e9but de l&rsquo;automne, les temp\u00e9ratures de l&rsquo;oc\u00e9an ne seront pas diff\u00e9rentes. Le Gulf Stream est toujours plus chaud que la normale, les temp\u00e9ratures plus \u00e9lev\u00e9es se sont \u00e9galement \u00e9tendues \u00e0 travers l&rsquo;Atlantique tropical.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22008\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/projection-sst-atlantique-nord-2021-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.gif?fit=700%2C534&amp;ssl=1\" data-orig-size=\"700,534\" 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=\"projection-sst-atlantique-nord-2021\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.gif?fit=300%2C229&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.gif?fit=700%2C534&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-sst-atlantique-nord-2021.gif?resize=700%2C534&#038;ssl=1\" alt=\"\" width=\"700\" height=\"534\" class=\"alignnone size-full wp-image-22008\" \/><\/p>\n<p>En regardant les pr\u00e9visions d&rsquo;anomalies de pr\u00e9cipitations, nous avons une indication pr\u00e9coce de pr\u00e9cipitations plus importantes que la normale en Afrique de l&rsquo;Ouest. Il s&rsquo;\u00e9tend \u00e0 travers l&rsquo;Atlantique vers les Cara\u00efbes et \u00e9galement sur l&rsquo;est des \u00c9tats-Unis et la r\u00e9gion du Gulf Stream.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"22009\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/anomalie-inhabituelle-dans-latlantique-nord\/projection-precipitations-2021\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-precipitations-2021.gif?fit=700%2C536&amp;ssl=1\" data-orig-size=\"700,536\" 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=\"projection-precipitations-2021\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-precipitations-2021.gif?fit=300%2C230&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-precipitations-2021.gif?fit=700%2C536&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/projection-precipitations-2021.gif?resize=700%2C536&#038;ssl=1\" alt=\"\" width=\"700\" height=\"536\" class=\"alignnone size-full wp-image-22009\" \/><\/p>\n<p>C&rsquo;est un signe tr\u00e8s inqui\u00e9tant, qui pointe directement vers une saison des ouragans plus active. Des eaux oc\u00e9aniques plus chaudes, combin\u00e9es \u00e0 plus de pr\u00e9cipitations, indiquent g\u00e9n\u00e9ralement une activit\u00e9 de temp\u00eates tropicales plus importantes.<\/p>\n<p>Ce serait particuli\u00e8rement grave, compte tenu de la zone plus chaude que la normale du Gulf Stream, ce qui pourrait amplifier les temp\u00eates qui approchent du sud-est des \u00c9tats-Unis ou de la c\u00f4te est. Si ce n&rsquo;est pas amplifier, cela pourrait au moins emp\u00eacher le syst\u00e8me tropical de s&rsquo;affaiblir de beaucoup, permettant son arriv\u00e9e \u00e0 une puissance plus \u00e9lev\u00e9e qu&rsquo;il ne le produirait normalement.<\/p>\n<p>Adaptation <a href=\"https:\/\/www.laterredufutur.com\/accueil\" rel=\"noopener\" target=\"_blank\">Terra Projects<\/a><\/p>\n<p>Source : <a href=\"https:\/\/www.severe-weather.eu\/global-weather\/gulf-stream-amoc-ocean-anomaly-united-states-europe-fa\/\" rel=\"noopener\" target=\"_blank\">https:\/\/www.severe-weather.eu\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"21986\">(2068)<\/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>Une anomalie oc\u00e9anique inhabituelle est d\u00e9tect\u00e9e dans le Gulf Stream, non observ\u00e9e depuis au moins 150 ans, ce qui rev\u00eat&#8230;<\/p>\n","protected":false},"author":1,"featured_media":22010,"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":"#Anomalie inhabituelle dans l'#Atlantique Nord @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":[23],"tags":[4865,520,1868,2980,2068,7562,2581,241,152],"class_list":["post-21986","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-circulation-oceanique","tag-amoc","tag-courant-oceanique","tag-courbe","tag-grand-convoyeur","tag-graphique","tag-gulf-steam","tag-nord-atlantique","tag-ocean","tag-sst","wpcat-23-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/02\/gulfstream.jpg?fit=1200%2C747&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-5IC","jetpack-related-posts":[{"id":23894,"url":"https:\/\/www.laterredufutur.com\/accueil\/dossier-de-nouvelles-donnees-montrent-que-le-gulf-stream-continue-de-ralentir-leau-douce-a-cree-un-desequilibre-et-le-rapproche-dun-point-deffondrement\/","url_meta":{"origin":21986,"position":0},"title":"Dossier : De nouvelles donn\u00e9es montrent que le Gulf Stream continue de ralentir, l&rsquo;eau douce a cr\u00e9\u00e9 un d\u00e9s\u00e9quilibre et le rapproche d&rsquo;un point d&rsquo;effondrement","author":"Admin","date":"6 avril 2022","format":false,"excerpt":"Le Gulf Stream s'est consid\u00e9rablement affaibli au cours des derni\u00e8res d\u00e9cennies, comme le r\u00e9v\u00e8lent les derni\u00e8res donn\u00e9es et de nouvelles \u00e9tudes. Le temps aux \u00c9tats-Unis et en Europe d\u00e9pend fortement de ce courant oc\u00e9anique, il est donc important de comprendre les changements en cours et ce qu'ils signifient pour notre\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/hemisphere-nord-ocean-salinite-concentration-amoc-gulf-stream.png?fit=1200%2C862&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/hemisphere-nord-ocean-salinite-concentration-amoc-gulf-stream.png?fit=1200%2C862&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/hemisphere-nord-ocean-salinite-concentration-amoc-gulf-stream.png?fit=1200%2C862&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/hemisphere-nord-ocean-salinite-concentration-amoc-gulf-stream.png?fit=1200%2C862&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/hemisphere-nord-ocean-salinite-concentration-amoc-gulf-stream.png?fit=1200%2C862&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1600,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-gulf-stream-marque-un-debit-faible-symptome-dun-futur-hiver-froid\/","url_meta":{"origin":21986,"position":1},"title":"Le Gulf Stream marque un d\u00e9bit faible : sympt\u00f4me d&rsquo;un futur hiver froid ?","author":"Admin","date":"27 octobre 2013","format":false,"excerpt":"Gulf Stream, on en reparle\u00a0! Le \u00a0Gulf Stream affaiblit et au niveau le plus bas en cinq ans, cela n'augurerait rien de bon pour l'hiver 2013-2014 en \u00a0l'Europe! Par P Gosselin sur le \u00a023. Octobre 2013 Le M\u00e9t\u00e9orologue allemand Dominik Jung a donn\u00e9 un commentaire sur son site wetternet.de o\u00f9\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"gulf stream","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/10\/gulf_stream_modis.gif?fit=450%2C300&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3498,"url":"https:\/\/www.laterredufutur.com\/accueil\/simulation-dun-arret-du-gulf-stream\/","url_meta":{"origin":21986,"position":2},"title":"Simulation d&rsquo;un Arr\u00eat du Gulf Stream","author":"Admin","date":"30 mai 2006","format":false,"excerpt":"Apr\u00e8s des mois de questionnements sur l'arr\u00eat possible du Gulf Stream et au del\u00e0 des cons\u00e9quences physiques d'un tel ph\u00e9nom\u00e8ne, voici donc les simulations des temp\u00e9ratures que nous pourrions observer. Si ce ph\u00e9nom\u00e8ne devait arriver la temp\u00e9rature de l'oc\u00e9an Atlantique Nord changerait radicalement... Ici une carte Mondiale, nous n'aurons pas\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\/londres.jpg?fit=250%2C200&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3052,"url":"https:\/\/www.laterredufutur.com\/accueil\/que-se-passe-t-il-dans-latlantique-nord\/","url_meta":{"origin":21986,"position":3},"title":"Que se passe t-il dans l&rsquo;Atlantique Nord ?","author":"Admin","date":"18 septembre 2005","format":false,"excerpt":"Depuis quelques jous de nombreux observateurs des cartes d'anomalies de surface de l'Atlantique Nord constatent un ph\u00e9nom\u00e8ne \u00e9tonnant. Ainsi il y a 20 jours, voici ou en \u00e9tait cette anomalie n\u00e9gative... Ici dessus cette carte date du 17\/09\/2005 et ci dessous du 31\/08\/2005... Vous pouvez constater que par rapport \u00e0\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2902,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-gulf-stream-pourrait-sarreter\/","url_meta":{"origin":21986,"position":4},"title":"Le Gulf Stream pourrait s&rsquo;arr\u00eater","author":"Admin","date":"9 mai 2005","format":false,"excerpt":"BRUXELLES 08\/05 (BELGA) = Les scientifiques qui \u00e9tudient les changements climatiques ont d\u00e9couvert les premiers signes d'un ralentissement du courant marin Gulf-Stream, qui maintient la douceur des climats en Europe occidentale, annonce dimanche le \"Sunday Times\". Cette cons\u00e9quence de l'effet de serre est un signe pr\u00e9curseur d'une r\u00e9duction spectaculaire des\u2026","rel":"","context":"Dans &quot;Courants Marins&quot;","block_context":{"text":"Courants Marins","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/circulation-oceanique\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/spaw\/images\/cartemondialetemp1.gif?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5762,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-poche-deau-douce-menace-le-gs\/","url_meta":{"origin":21986,"position":5},"title":"Une poche d&rsquo;eau douce menace le GS","author":"Admin","date":"11 avril 2011","format":false,"excerpt":"Une gigantesque poche d'eau douce dans l'oc\u00e9an Arctique pourrait gagner l'Atlantique et potentiellement affecter le Gulf Stream, courant oc\u00e9anique qui contribue de mani\u00e8re substantielle au climat temp\u00e9r\u00e9 de l'Europe de l'Ouest, ont d\u00e9clar\u00e9 mardi des oc\u00e9anographes \u00e0 l'Associated Press. 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