{"id":139,"date":"2009-02-17T22:59:11","date_gmt":"2009-02-17T21:59:11","guid":{"rendered":"http:\/\/www.wetter-center.de\/blog\/?p=139"},"modified":"2009-02-17T23:13:40","modified_gmt":"2009-02-17T22:13:40","slug":"naturliche-extreme-sprunge-im-klima","status":"publish","type":"post","link":"https:\/\/www.wetter-center.de\/blog\/naturliche-extreme-sprunge-im-klima\/","title":{"rendered":"Nat\u00fcrliche extreme Spr\u00fcnge im Klima"},"content":{"rendered":"<p>Wissenschaftler des Bjerknes-Zentrums f\u00fcr Klimaforschung, der Universit\u00e4t Bergen in Norwegen und der ETH Z\u00fcrich haben <a href=\"http:\/\/www.sciencedaily.com\/releases\/2009\/02\/090216092824.htm\" target=\"_blank\">in einer neuen Untersuchung<\/a> Sedimente aus dem Kr\u00e5kenes-See in Westnorwegen und aus dem Nordmeer untersucht. Dabei ging es darum, die <strong>pl\u00f6tzliche Abk\u00fchlung<\/strong> der Nordhemisph\u00e4re im <strong><a href=\"http:\/\/de.wikipedia.org\/wiki\/J%C3%BCngere_Dryas\" target=\"_blank\">J\u00fcngeren Dryas<\/a><\/strong> vor etwa 12.900 Jahren zu erforschen.<\/p>\n<p>Die Forscher fanden heraus, dass w\u00e4hrend dieser Abk\u00fchlungsphase <strong>extreme Spr\u00fcnge<\/strong> zwischen Gletscherschmelze und neuer Vereisung in Norwegen stattfanden. Zur gleichen Zeit variierten die <strong>Meeresoberfl\u00e4chentemperaturen <\/strong>und der <strong>Salzgehalt <\/strong>des Nordmeeres besonders stark.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.wetter-center.de\/blog\/wp-content\/uploads\/2008\/06\/gletscher.jpg\" title=\"Gletscher\" alt=\"Gletscher\" align=\"left\" hspace=\"5\" width=\"250\" \/>Die Wissenschaftler vermuten, dass zu der Zeit der Zufluss von warmem Atlantikwasser in das Nordmeer die <strong><a href=\"http:\/\/de.wikipedia.org\/wiki\/Westwinddrift\" target=\"_blank\">Westwinddrift <\/a><\/strong>nach Norden verschoben hat. Dadurch konnten vermehrt Tiefdruckgebiete <strong>milde Luft<\/strong> nach Skandinavien bringen, so dass die <strong>Gletscher dezimiert<\/strong> wurden. Dadurch gelangte jedoch mehr <strong>S\u00fc\u00dfwasser<\/strong> in den Ozean, was dazu f\u00fchrte, dass sich wieder mehr Eis auf dem Nordmeer bilden konnte. So wurde die Westwinddrift wieder nach S\u00fcden verlagert und Skandinavien k\u00fchlte wieder ab.<\/p>\n<p>Dieses extreme Hin und Her ging offenbar \u00fcber <strong>mehrere Dekaden<\/strong>, bevor schlie\u00dflich die Vergletscherung Skandinaviens erfolgt war und das Klimasystem einen stabilen Zustand annahm. In Europa herrschten zu der Zeit im Mittel Temperaturen, die etwa <strong>15 Grad niedriger<\/strong> als heute lagen. Warum das Klimasystem allerdings schlie\u00dflich diesen stabilen kalten Zustand angenommen hat, bleibt weiterhin ungekl\u00e4rt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Wissenschaftler des Bjerknes-Zentrums f\u00fcr Klimaforschung, der Universit\u00e4t Bergen in Norwegen und der ETH Z\u00fcrich haben in einer neuen Untersuchung Sedimente aus dem Kr\u00e5kenes-See in Westnorwegen und aus dem Nordmeer untersucht. Dabei ging es darum,&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-139","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nat\u00fcrliche extreme Spr\u00fcnge im Klima - Wetter-Center.de<\/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:\/\/www.wetter-center.de\/blog\/naturliche-extreme-sprunge-im-klima\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nat\u00fcrliche extreme Spr\u00fcnge im Klima - Wetter-Center.de\" \/>\n<meta property=\"og:description\" content=\"Wissenschaftler des Bjerknes-Zentrums f\u00fcr Klimaforschung, der Universit\u00e4t Bergen in Norwegen und der ETH Z\u00fcrich haben in einer neuen Untersuchung Sedimente aus dem Kr\u00e5kenes-See in Westnorwegen und aus dem Nordmeer untersucht. 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