Climate Change and Timescales (Part 1): Why “Global Wobbling” doesn’t matter

October 20, 2014 3:04 pm0 comments
Image by Michael Quirke (graphic at top from Australian Bureau of Meteorology)

At a recent meeting of the U.S. House of Representatives Committee on Science, Space and Technology, Rep. Steve Stockman (R-TX) asked White House Science Advisor John Holdren why “global wobbling” was not included in climate models of modern climate change (YouTube). After all, if global wobbling was so important in ending the […]

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Uncertainty doesn’t imply nothing is known or nothing should be done

October 17, 2014 3:39 pm3 comments
Climate Forcing and Climate Sensitivity with ranges of Lewis and Crok paper and IPCC AR5

While Judith Curry brings up some interesting notions in ‘Climate Sensitivity Uncertainy‘, I don’t agree with many of her arguments and conclusions. I’m pleased that Dr. Curry acknowledges that “uncertainty in itself is not a reason for inaction” (see also ‘Why Climate Uncertainty is No Excuse for Doing Nothing‘ on […]

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Climate Sensitivity Uncertainty

October 3, 2014 7:20 pm3 comments
Nic Lewis and Judith Curry graph on ECS and TCR results from recent paper in Climate Dynamics

In a press conference ahead of the UN Climate Summit two week ago, UN Secretary-General Ban-Ki Moon stated: “Action on climate change is urgent.  The more we delay, the more we will pay in lives and in money.” The recently appointed UN Messenger of Peace Leonardo DiCaprio stated “The debate is over. […]

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The Carbon Cycle and Climate Models

September 5, 2014 10:57 pm0 comments
The Carbon Cycle and Climate Models

To tell the story from the beginning, consider the carbon atom – 6 protons, 4 valence electrons, 4th most abundant element in the universe – basis of all life on earth. It’s locked up in rocks and plants, dissolved into our oceans, and mixed up with other gases in our […]

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Teaching Climate Change through Six Questions

August 12, 2014 3:47 pm5 comments
Teaching Climate Change through Six Questions

Given all the back and forth on climate change out there, it can be hard to know what to think. It’s also a complicated subject, so much of the information is distributed all over the place or in huge tomes. Below I’ve put together a fairly quick overview that I’ve […]

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Recent Lessons from the Past

June 4, 2014 5:37 am3 comments
Global surface temperature (anomaly from 1960-1990 average) reconstructions for the past 9000 years (Marcott et al. 2013), for the past 2,000 years (PAGES 2k), and observed for the past 150 years (Instrumental data from HadCRUT4) and the last 30 years (star). From Kaufman et al. (2013).

Recently a german taxi driver asked me if climate hasn’t been changing in the past with similar warm periods as the one we have now. After getting back home to Corvallis, Oregon, I read a letter to the editor of our local newspaper claiming that it was much warmer than […]

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