Category Archives: Attribution

Record breaking N. American winters not due to climate change

by Judith Curry

A new study finds that human-caused warming in the west tropical Pacific was not responsible for a series of frigid North American winters experienced over the early 2000s.

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Preparing a new talk

by Judith Curry

I could use some help pulling together some graphs for a talk I am giving next week.

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Attribution of extreme weather events?

by Judith Curry

The National Academies has published a new report:  Attribution of extreme weather events in the context of climate change.

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Nature: Making sense of the early 2000’s warming slowdown

by Judith Curry

It has been claimed that the early-2000s global warming slowdown or hiatus, characterized by a reduced rate of global surface warming, has been overstated, lacks sound scientific basis, or is unsupported by observations. The evidence presented here contradicts these claims. – Fyfe et al.

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Insights from Karl Popper: how to open the deadlocked climate debate

by Larry Kummer, from the Fabius Maximus website.

Many factors have frozen the public policy debate on climate change, but none more important than the disinterest of both sides in tests that might provide better evidence — and perhaps restart the discussion. Even worse, too little thought has been given to the criteria for validating climate science theories (aka their paradigm) and the models build upon them.

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On the likelihood of recent record warmth

by Judith Curry

[O]ur results suggest that the recent record temperature years are are roughly 600 to 130,000 times more likely to have occurred under conditions of anthropogenic than in its absence.  – Mann et al.

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Has the intrinsic component of multidecadal climate variability been isolated?

by Sergey Kravtsov, Marcia Wyatt, Judith Curry and Anastasios Tsonis

A discussion of two recent papers: Steinman et al. (2015) and Kravtsov et al. (2015)

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400(?) years of warming

by Judith Curry

So, exactly how long has it been warming?

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Lukewarming

by Judith Curry

Two new books on lukewarming have recently been published.

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Natural climate variability during 1880-1950: A response to Shaun Lovejoy

by Vaughan Pratt

Judith Curry’s recent critical assessment of “L4”, as I’ll call Shaun Lovejoy’s October 20 EOS article, raised the following points:

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Climate closure (?)

by Judith Curry

The scientific debate is now over; the moment of closure has arrived. – Shaun Lovejoy

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New book: Doubt and Certainty in Climate Science

by Judith Curry

Doubt and Certainty in Climate Science is an important new book that everyone should read.  And its free.

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Hiatus revisionism

by Judith Curry

Some interesting new papers on the hiatus in global warming.

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Embracing uncertainty in climate change policy (!)

We argue for a redesign of climate change mitigation policies to be ‘anti-fragile’ with respect to scientific uncertainty. – Otto et al.

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Hansen’s backfire

by Judith Curry

Jim Hansen’s new paper, and his PR strategy, are raising a whole host of issues that are arguably a backfire for his objectives.

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Impact of AMO/PDO on U.S. regional surface temperatures

by Judith Curry

The conclusion is that the oscillatory mode (mostly due to the AMO) is significantly more important than the monotonic mode (mostly due to increasing atmospheric CO2) in explaining the 1980–2000 U.S. temperature increase.  – Bruce Kurtz

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What are the most controversial points in climate science?

by Judith Curry

And how might these controversies be resolved?

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Whats up with the Atlantic?

by Judith Curry

The Washington Post has this dramatic headline:  Global warming is now slowing down the circulation of the ocean with potentially dire consequences.

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2 new papers on the ‘pause’

by Judith Curry

Two new papers were published last week of relevance to the hiatus.

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‘Most’ versus ‘more than half’ versus ‘> 50%’

by Judith Curry

Seeking once again to clarify the problems in communicating the IPCC climate change attribution statements.

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Climate dynamics of clouds

by Judith Curry

So, what’s going on in the world of research on the climate dynamics of clouds?

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Root Cause Analysis of the Modern Warming

by Matt Skaggs

For years, climate scientists have followed reasoning that goes from climate model simulations to expert opinion, declaring that to be sufficient. But that is not how attribution works.

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Evidence of deep ocean cooling?

by Judith Curry

New research suggests that the upper layer of the ocean has warmed more than had been thought previously while the deeper ocean has cooled rather than warmed in recent years.

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Two contrasting views of multidecadal climate variability in the 20th century

by Judith Curry

Our new stadium wave paper is now published.

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JC at the National Press Club

by Judith Curry

I have just returned from my engagement at the National Press Club, sponsored by the Marshall Institute Roundtable.

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