{"id":720,"date":"2009-09-02T15:41:51","date_gmt":"2009-09-02T15:41:51","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/09\/02\/la-conference-sur-le-climat-arctique-prevoit-une-rapide-elevation-moyenne-du-niveau-des-mers\/"},"modified":"2012-07-12T11:50:22","modified_gmt":"2012-07-12T11:50:22","slug":"la-conference-sur-le-climat-arctique-prevoit-une-rapide-elevation-moyenne-du-niveau-des-mers","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/09\/02\/la-conference-sur-le-climat-arctique-prevoit-une-rapide-elevation-moyenne-du-niveau-des-mers\/","title":{"rendered":"La Conf\u00e9rence sur le Climat Arctique pr\u00e9voit une rapide \u00e9l\u00e9vation du niveau moyen des mers"},"content":{"rendered":"<p>&#160; &#160;Le pessimisme est de rigueur sur l&#039;\u00e9volution du climat dans le Grand Nord. La Conf\u00e9rence sur le Climat Arctique a estim\u00e9 que le Groenland a perdu durant les 5 derni\u00e8res ann\u00e9es 240 km<sup>3<\/sup> de glace par an. Les scientifiques pr\u00e9sents ont estim\u00e9 que dans l&#039;hypoth\u00e8se d&#039;une extrapolation des tendances actuelles, le niveau moyen des mers pourrait s&#039;\u00e9lever de pr\u00e8s d&#039;un m\u00e8tre d&#039;ici \u00e0 un si\u00e8cle. <\/p>\n<p>&#160;&#160; Le niveau moyen des mers est une grandeur intensive mesurable soit par des capteurs locaux en de multiples points autour du globe, soit par des mesures par satellite. Les deux m\u00e9thodes ne donnent pas des valeurs tout \u00e0 fait identiques mais les mesures vont toutes dans la m\u00eame direction: l&#039;\u00e9l\u00e9vation du niveau estim\u00e9e autour de 3,2 mm par an. Les scientifiques sp\u00e9cialistes de ces mesures cherchent \u00e0 d\u00e9terminer la part relative de la <strong>dilatation thermique<\/strong> des oc\u00e9ans en raison de l&#039;augmentation de temp\u00e9rature des eaux de surface et de la contribution des <strong>fontes de glaces terrestres<\/strong> qui sont les deux gros contributeurs, \u00e0 parts sensiblements \u00e9gales, \u00e0 ces ph\u00e9nom\u00e8nes. Des erreurs de mesures de temp\u00e9ratures des oc\u00e9ans qui ont pu faire croire \u00e0 un refroidissement, ont longtemps aliment\u00e9 les d\u00e9bats entre sp\u00e9cialistes. Mais il semblerait que les choses soient maintenant ma\u00eetris\u00e9es et qu&#039;il y ait une bonne co\u00efncidence entre la th\u00e9orie et les mesures exp\u00e9rimentales (FIG. recouvrement des courbes bleues et roses ces derni\u00e8res ann\u00e9es). <\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/6a00d83451b18369e20120a5405cd0970b-pi.jpg\"><img decoding=\"async\" alt=\"Sea-level-compar\u00e9-1960-2007\" class=\"at-xid-6a00d83451b18369e20120a5405cd0970b \" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/6a00d83451b18369e20120a5405cd0970b-450wi.jpg\" \/><\/a> <\/p>\n<p>&#160; Si les pr\u00e9visions alarmistes des sp\u00e9cialistes du Grand Nord s&#039;av\u00e8rent exactes, les courbes de mesure des niveaux moyens des mers devraient pr\u00e9senter un changement de pente important dans les ann\u00e9es \u00e0 venir. Ces mesures sont \u00e0 mon avis le meilleur indicateur intensif du changement climatique observ\u00e9. La fonte des glaces et le r\u00e9chauffement des oc\u00e9ans repr\u00e9sentant plus des 4 cinqui\u00e8mes des ph\u00e9nom\u00e8nes d&#039;accumulation d&#039;\u00e9nergie par notre plan\u00e8te.<\/p>\n<p><a href=\"http:\/\/www.space.dtu.dk\/English\/News\/News.aspx?guid={2F1E2995-068B-4F0F-8ABF-369481D27C6B}\" target=\"_blank\" title=\"Arctic clmate change\">LIRE<\/a> les conclusions de la Conf\u00e9rence.<\/p>\n<p><a href=\"http:\/\/earthobservatory.nasa.gov\/Features\/OceanCooling\/printall.php\" target=\"_blank\" title=\"Willis temperature data\">Comprendre<\/a> les difficult\u00e9s rencontr\u00e9es par l&#039;interpr\u00e9tation de donn\u00e9es de temp\u00e9ratures erron\u00e9es<\/p>\n<p>Le 2 Septembre 2009<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#160; &#160;Le pessimisme est de rigueur sur l&#039;\u00e9volution du climat dans le Grand Nord. La Conf\u00e9rence sur le Climat Arctique a estim\u00e9 que le Groenland a perdu durant les 5 derni\u00e8res ann\u00e9es 240 km3 de glace par an. Les scientifiques pr\u00e9sents ont estim\u00e9 que dans l&#039;hypoth\u00e8se d&#039;une extrapolation des tendances actuelles, le niveau moyen des [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":20847,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-720","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La Conf\u00e9rence sur le Climat Arctique pr\u00e9voit une rapide \u00e9l\u00e9vation du niveau moyen des mers - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/09\/02\/la-conference-sur-le-climat-arctique-prevoit-une-rapide-elevation-moyenne-du-niveau-des-mers\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"La Conf\u00e9rence sur le Climat Arctique pr\u00e9voit une rapide \u00e9l\u00e9vation du niveau moyen des mers - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"&#160; &#160;Le pessimisme est de rigueur sur l&#039;\u00e9volution du climat dans le Grand Nord. La Conf\u00e9rence sur le Climat Arctique a estim\u00e9 que le Groenland a perdu durant les 5 derni\u00e8res ann\u00e9es 240 km3 de glace par an. 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