{"id":1934,"date":"2017-08-02T00:15:35","date_gmt":"2017-08-01T22:15:35","guid":{"rendered":"http:\/\/www.wetter-center.de\/blog\/?p=1934"},"modified":"2017-08-02T00:20:23","modified_gmt":"2017-08-01T22:20:23","slug":"gletscher-foerdern-globale-erwaermung","status":"publish","type":"post","link":"https:\/\/www.wetter-center.de\/blog\/gletscher-foerdern-globale-erwaermung\/","title":{"rendered":"Gletscher f\u00f6rdern Globale Erw\u00e4rmung"},"content":{"rendered":"<p>Es klingt kurios, aber einer <a href=\"https:\/\/www.sciencedaily.com\/releases\/2017\/07\/170731164440.htm\" target=\"_blank\" rel=\"noopener\">neuen Studie<\/a>\u00a0von amerikanischen und deutschen Forschern zur Folge haben Gletscher nach der letzten Eiszeit dabei geholfen, die Erdatmosph\u00e4re zu erw\u00e4rmen. Die Forscher untersuchten die\u00a0<strong>Verwitterung durch die Vereisung<\/strong> \u00fcber Millionen von Jahren, um zu sehen, wie Gletscherzyklen die Ozeane und die Atmosph\u00e4re beeinflusst haben und weiterhin tun.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1935\" src=\"http:\/\/www.wetter-center.de\/blog\/wp-content\/uploads\/2017\/08\/35172618264_bc4d3db089_z.jpg\" alt=\"\" width=\"520\" height=\"293\" srcset=\"https:\/\/www.wetter-center.de\/blog\/wp-content\/uploads\/2017\/08\/35172618264_bc4d3db089_z.jpg 640w, https:\/\/www.wetter-center.de\/blog\/wp-content\/uploads\/2017\/08\/35172618264_bc4d3db089_z-600x338.jpg 600w, https:\/\/www.wetter-center.de\/blog\/wp-content\/uploads\/2017\/08\/35172618264_bc4d3db089_z-300x169.jpg 300w\" sizes=\"auto, (max-width: 520px) 100vw, 520px\" \/><\/p>\n<p>Die Studie zeigt, dass die Vereisung zu einer erh\u00f6hte Erosion f\u00fchrt, bei der vermehrt <strong>Kohlendioxid<\/strong> in die Umwelt abgegeben wird. Die Forscher ermittelten eine verbesserte Oxidation von <a href=\"https:\/\/de.wikipedia.org\/wiki\/Pyrit\" target=\"_blank\" rel=\"noopener\">Pyrit<\/a>, einem Eisensulfid, das auch als Narrengold oder Katzengold bekannt ist. Durch die Oxidation wird eine S\u00e4ure gebildet, die <strong>Kohlendioxid in die Ozeane<\/strong> bef\u00f6rdert und so den Kohlenstoffkreislauf beeinflusst.<\/p>\n<p>Wachstum und R\u00fcckgang der Gletscher \u00fcber 10.000 Jahre k\u00f6nnte die Konzentration des atmosph\u00e4rischen Kohlendioxids um <strong>25 ppm<\/strong> (Teile CO2 pro Millionen Luftteile) oder mehr erh\u00f6ht haben. Dies ist ein signifikanter Prozentsatz der <strong>400 ppm<\/strong>, die in den letzten Monaten gemessen wurde. Jedoch findet die heutige Freisetzung an Kohlendioxid mit einer viel schnelleren Zuwachsrate statt als die nat\u00fcrliche Verwitterung bewirken kann.<\/p>\n<p>Die Forscher fanden zudem, dass der Gletscherbeitrag zur Freisetzung von Kohlendioxid \u00fcber l\u00e4ngere Zeitr\u00e4ume eine <strong>negative R\u00fcckkopplung<\/strong> hat, d.h., die weitere Vergletscherung wird verlangsamt oder sogar ganz aufgehalten. Der Ozean speichert viel Kohlenstoff. Wenn die Chemie des Ozeans modifiziert wird, kann etwas von diesem gespeicherten Kohlenstoff in die Atmosph\u00e4re als Kohlendioxid freigesetzt werden. Diese Freisetzung von Kohlendioxid beeinflusst dann das Erdklima aufgrund des Treibhauseffekts.<\/p>\n<p>Foto: <a href=\"https:\/\/www.flickr.com\/photos\/aehack\/\" target=\"_blank\" rel=\"noopener\">Flick.com\/Allan Hack<\/a>.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Es klingt kurios, aber einer neuen Studie\u00a0von amerikanischen und deutschen Forschern zur Folge haben Gletscher nach der letzten Eiszeit dabei geholfen, die Erdatmosph\u00e4re zu erw\u00e4rmen. Die Forscher untersuchten die\u00a0Verwitterung durch die Vereisung \u00fcber Millionen&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":1935,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,4],"tags":[25,26,71],"class_list":["post-1934","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forschung","category-klimawandel","tag-gletscher","tag-globale-erwaermung","tag-kohlendioxid"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Gletscher f\u00f6rdern Globale Erw\u00e4rmung - 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\/gletscher-foerdern-globale-erwaermung\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Gletscher f\u00f6rdern Globale Erw\u00e4rmung - Wetter-Center.de\" \/>\n<meta property=\"og:description\" content=\"Es klingt kurios, aber einer neuen Studie\u00a0von amerikanischen und deutschen Forschern zur Folge haben Gletscher nach der letzten Eiszeit dabei geholfen, die Erdatmosph\u00e4re zu erw\u00e4rmen. 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