Tags: Climate Change | global | warming | theories | challenged | stadium wave

New Research Challenges Global Warming Theories

Image: New Research Challenges Global Warming Theories Floating icebergs near Narsaq, Greenland.

Tuesday, 05 Nov 2013 06:46 AM

By Elliot Jager

The role of natural cyclical weather trends has been underestimated, while the effects of greenhouse gases have been greatly exaggerated, two experts on global warming write in the peer-reviewed "Climate Dynamics."

The paper by Professor Judith Curry of the Georgia Institute of Technology and Dr. Marcia Wyatt, an independent scientist who earned her degree at the University of Colorado, challenges the conventional view, held by most scientists associated with the UN Intergovernmental Panel on Climate Change, that the planet is getting inexorably hotter due to greenhouse gas emissions.

The new research raises the possibility that orthodox climate models are fundamentally inadequate – which would explain the divergence between U.N. climate simulation models and actual observations, Curry said.

Wyatt and Curry point to an oscillating natural phenomenon. They call it a "stadium-wave" – like a crowd rising to cheer at a football game – a three-hundred year-long cycle that explains why earth is currently experiencing a pause in the rise of temperatures. Now into its 17th year, the hiatus may continue for decades to come.

The paper analyzed atmospheric, oceanic and sea ice data since 1900.
Actual temperatures are now lower than predictions made by most models used by the UN panel. Yet the North Atlantic Ocean continued to warm and Arctic sea ice continued to decline. The two scientists hypothesize that, like a "stadium-wave," the North Atlantic Ocean will now begin to cool and sea ice in the Arctic will begin to rebound.

"Current climate models are overly damped and deterministic, focusing on the impacts of external forcing rather than simulating the natural internal variability associated with nonlinear interactions of the coupled atmosphere-ocean system," Curry wrote.

In other words, said Curry, the new research provides a very different view to the orthodox claim  that "we are toast by 2047."

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