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Risiko-Analyse von Klima-Domino-Effekten: Kippelemente können sich gegenseitig destabilisieren

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Kipp-Elemente im Erdsystem können sich gegenseitig destabilisieren, mit dem Risiko von Klima-Domino-Effekten, wenn die globale Erwärmung weiter voranschreitet. Die Eisschilde auf Grönland und der Westantarktis sind hierbei mögliche Ausgangspunkte für Kippkaskaden, wie eine neuartige Netzwerkanalyse zeigt. Ist ihr Kipppunkt erst einmal überschritten, könnten hierdurch über die Atlantikzirkulation auch entfernte Elemente wie der Amazonas-Regenwald beeinträchtigt werden. Die Folgen für den Menschen würden vom Anstieg des Meeresspiegels bis zu schweren Schäden der Biosphäre reichen. Wechselwirkungen im Netzwerk können laut der Studie die Temperaturschwellen senken, jenseits derer einzelne Kippelemente langfristig instabil werden – das Risiko hierfür nimmt bereits im Temperaturbereich des Pariser Klimaabkommens tuxlgyzj 9.9dV kvv 9vY guummrqs ef.

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