The 'worse than we thought' model

From ETH Zurich: Underestimated future climate change? 25.11.2013 | Fabio Bergamin New model calculations by ETH researcher Thomas Frölicher show that global warming may continue after a stoppage of CO 2 emissions. We cannot rule out the possibility that climate change is even greater than previously thought, says the scientist. A change in ocean heat…

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The WUWT Hot Sheet for September 12th, 2013

Climate models wildly overestimated global warming, study finds Can you rely on the weather forecast? Maybe not, at least when it comes to global warming predictions over short time periods. That’s the upshot of a new study in the journal Nature Climate Change that compared 117 climate predictions made in the 1990’s to the actual amount of…

RC's Dr. Eric Steig boreholes himself on Antarctica

This is something that needs wider circulation, hence its appearance here. I’ve been mulling over how to best present this, and decided there’s nothing I could do in the way of excerpts that still told the story effectively, so I decided to present it in full. I’m pretty sure Jeff won’t mind. Readers may recall…

Is the Current Global Warming a Natural Cycle?

Guest post by W. Jackson Davis and Peter Taylor We were delighted to see the paper published in Nature magazine online (August 22, 2012 issue) reporting past climate warming events in the Antarctic similar in amplitude and warming rate to the present global warming signal. The paper, entitled “Recent Antarctic Peninsula warming relative to Holocene…

Another paper shows that severe weather/extreme weather has no trend related to global warming

From Pierre Gosselin’s  Notrickszone http://notrickszone.com/2012/05/25/comprehensive-alps-study-clearly-refutes-humans-are-causing-more-weather-variability-and-extremes/ A new paper authored by Reinhard Böhm of the Austrian Central Administration For Meteorology (ZAMG) refutes the notion that anthropogenic warming is causing an increase of climate extremes and making weather more variable and extreme. Pressure – temperature – precipitation (Source ZAMG) The paper uses the monthly resolved data of the HISTALP data…

Natural Variability in the Widths of the Tropics

Guest Post by Willis Eschenbach In my previous post, “Does This Analysis Make My Tropics Look Big?“I discussed a paper called “Recent Northern Hemisphere tropical expansion primarily driven by black carbon and tropospheric ozone”, by Robert Allen et al, hereinafter A2012. They use several metrics to measure the width of the tropics—the location of the…