Antarktischer Eisschild hat in der Vergangenheit zum rasanten Meeresspiegelanstieg geführt

Alfred-Wegener-Institut, 28 Mai 2014: Der Antarktische Eisschild hat zum Ende der letzten Eiszeit in kurzer Zeit sehr viel Eis verloren und damit den Meeresspiegel weltweit rasant um mehrere Meter ansteigen lassen.  Mit ihrer Studie liefern die Wissenschaftler den ersten Beweis dafür, dass der Massenverlust des Antarktischen Eisschildes wesentlich dazu beigetragen hat, dass der Meeresspiegel am Ende…

Why is Antarctic sea ice expanding?

By Laura Naranjo (NSIDC), first published January 31, 2014. In the following  an edited version, reposted here with permission. Antarctic sea ice is ruled by very different systems than Arctic sea ice. The reasons behind this increase are complex, and several recent studies show that scientists are still trying to understand them. Ice and wind Atmospheric…

New mechanism uncovered, causing potentially rapid Antarctic Glacier melt

An Australian-led research team found that sea levels may rise much faster than previously predicted by models, because changes by disruptive westerly winds, weren’t taken into account. Conservative estimates so far, projected irreversible melting in the course of a few centuries, depending on the temperature increase. Related Each degree of global warming might ultimately raise…

Study: 2°C target at risk, without moving subsidies (Updated)

The study, Energy investments under climate policy: A comparison of global models, published in the journal Climate Change Economics (DOI: 10.1142/S2010007813400101 | 2013) explored global energy spending and concluded that low-carbon energy and energy efficiency investments of about 1.1 trillion annually are required, to meet the emissions reduction targets to keep the world below 2°C. In context, additional $0.8…

The Runaway Glaciers in West Antarctica

NASA/JPL press release, May 12, 2014: A new study by researchers at NASA and the University of California, Irvine, finds a rapidly melting section of the West Antarctic Ice Sheet appears to be in an irreversible state of decline, with nothing to stop the glaciers in this area from melting into the sea. The study presents…

With further Arctic Amplification, How fast will Greenhouse Gas emissions accelerate in the Arctic Circle?

Introduction to Methane Hydrate “Methane Hydrates and Contemporary Climate Change” (2011) IDENTIFICATION This post “A Mechanism for Shallow Methane Hydrate Dissociation”, explores possible mechanism which could release vast quantities of shallow Methane Hydrate into the ocean and atmosphere.       CH4 Release The following studies explore the release of CH4 emissions in the Arctic region. OBSERVATION…

Gavin Schmidt: The emergent patterns of climate change

You can’t understand climate change in pieces, says climate scientist Gavin Schmidt. It’s the whole, or it’s nothing. In this illuminating talk, he explains how he studies the big picture of climate change with mesmerizing models that illustrate the endlessly complex interactions of small-scale environmental events. You can’t understand climate change in pieces, says climate…

Die Vermeidung des Klimawandels – der dritte Teil des neuen Berichtes des Weltklimarates IPCC

Ein Gast Beitrag von Brigitte Knopf auf Stefan Rahmstorf’s Blog, erläutert den neuen Bericht der Arbeitsgruppe 3, des IPCC’s. „Die Emissionen steigen global weiter an und der Anstieg ist an erster Stelle auf das Wirtschaftswachstum zurückzuführen. Um Klimaschutz zu erreichen, muss die Nutzung fossiler Ressourcen ohne CCS in der Stromerzeugung bis Ende des Jahrhunderts auslaufen.…