Earth System Sensitivity, the Albedo Effect, and “What Has the Future Ever Done for Me?”

December 11, 2014 9:09 pm4 comments
Earth System Sensitivity, the Albedo Effect, and “What Has the Future Ever Done for Me?”

Summary of Comments from the CCNF Scientists’ Comment Thread: — Dr. Bart Verheggen: “The albedo effect due to the response from the big ice sheets is excluded (or held constant) in estimating [equilibrium climate sensitivity (ECS)]… That’s why e.g. Dr. Jim Hansen and others call this the “fast feedback sensitivity”, since […]

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Making sense of Antarctic sea ice changes

December 9, 2014 1:13 pm10 comments
Making sense of Antarctic sea ice changes

Antarctic sea ice is one of those things in the climate system that seems to confuse people. Antarctic sea ice, on average, is increasing. How can there be global warming if sea ice is increasing in the Antarctic? Some have gone so far as to average the Arctic sea ice […]

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What did the IPCC actually say?

December 6, 2014 2:01 pm0 comments
What did the IPCC actually say?

COP20 is now underway in Lima and I have been on the newly created site for most of the week. Less than three months ago this was apparently an empty piece of land in a large Peruvian government complex, but now it is a bustling and well fitted out set […]

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The New Climate Pact between U.S. and China, details and reactions across media

November 20, 2014 10:16 am1 comment
President Barack Obama and Chinese President Xi Jinping in Bejing on Wednesday, November 12th, after announcing the climate pact between their two countries. Republished under fair use.

The U.S. and China have reached a landmark agreement to significantly reduce greenhouse-gas emissions in the coming decades. The deal was announced last week by President Barack Obama and Chinese President Xi Jinping at a joint press conference in Beijing after months of secret negotiations between the two administrations. The U.S. and China are the world’s two largest […]

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Continuing National Dialogue Beyond Climate Week — From Deep in the Heart of Texas

November 17, 2014 9:01 am0 comments
Continuing National Dialogue Beyond Climate Week — From Deep in the Heart of Texas

Journalist’s note: This is CCNF’s latest press release. I am republishing here a little after-the-fact. Check it out on Chron.com. As world leaders conclude climate change discussions in New York, deep in the heart of Texas in the energy capital of the world, a small non-profit founded by leading scientists […]

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Key findings of the IPCC AR5 Synthesis Report (official slide show)

November 7, 2014 6:29 am0 comments
Key findings of the IPCC AR5 Synthesis Report (official slide show)

Journalist’s note (MQ): Below are the slides from the IPCC’s power point presentation (available for download) on the key findings of the IPCC AR5 Synthesis Report. Material is republished here under fair use for educational purposes.  End.

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IPCC releases its Summary for Policymakers for its Fifth Assessment

6:19 am0 comments
IPCC releases its Summary for Policymakers for its Fifth Assessment

The Intergovernmental Panel on Climate Change (IPCC) culminated its Fifth Assessment Report (AR5) on climate change with the release of the Synthesis Report (SYR) and attendant Summary for Policymakers (SPM) last Saturday. The purpose of the SYR is to provide a clear scientific view on the current state of knowledge on climate change, its projected […]

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NASA: Study Finds No Measurable Warming in Deep Ocean Since 2005 [General Commentary]

October 28, 2014 3:27 pm0 comments
Credit: NOAA Okeanos Explorer Program, INDEX-SATAL 2010

Summary of Comments from the CCNF Scientist Community: Dr. Andrew Dessler: This is interesting and will help us shake out problems in our understanding of where heat is being stored in the ocean.  That said… this result doesn’t tell us much about how much warming we’ll get over the next 100 years. — […]

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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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