Monthly Archives: August 2013

Open thread weekend

by Judith Curry

It’s your turn to introduce topics for discussion.

Ice sheet collapse?

by Rud Istvan

One of the catastrophes associated with anthropogenic global warming (CAGW) is a rising sea.     Is the projected rise and rate unprecedented? Will it be catastrophic?                                   

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Pause politics

by Judith Curry

U.S. and European Union envoys are seeking more clarity from the United Nations on a slowdown in global warming that climate skeptics have cited as a reason not to “panic” about environmental changes, leaked documents show.

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Inadequate uncertainty analysis in climate change assessments

by Judith Curry

Use of state-of-the-art statistical methods could substantially improve the quantification of uncertainty in assessments of climate change.

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What is internal variability?

by X Anonymous

According to the IPCC, “climate variability refers to variations in the mean state and other statistics (such as standard deviations, the occurrence of extremes, etc.) of the climate on all spatial and temporal scales beyond that of individual weather events. Variability may be due to natural internal processes within the climate system (internal variability), or to variations in natural or anthropogenic external forcing (external variability).”

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Pause tied to equatorial Pacific surface cooling

by Judith Curry

Update:  New comment from Xie

My mind has been blown by a new paper just published in Nature.

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Overestimated global warming over the past 20 years

by Judith Curry

Recent observed global warming is significantly less than that simulated by climate models. This difference might be explained by some combination of errors in external forcing, model response and internal climate variability.

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I know I’m right (?)

by Judith Curry

A behavioral view of overconfidence.

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Who is on which ‘side’ in the climate debate, anyways?

by Judith Curry

Well, if you judge ‘sides’ by what climate scientists have to say about the science, it is getting difficult to tell.

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Open thread weekend

by Judith Curry

It’s your turn to introduce topics for discussion.

JC on NPR

I have an interview tonite on NPR’s All Things Considered.

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Arctic sea ice and extreme weather

by Judith Curry

Is the dramatic decline of Arctic sea ice, spurred by manmade global warming, making the  weather where we live more extreme?  Several recent studies have made this claim.  But a new study finds little evidence to support the idea that the plummeting Arctic sea ice has meaningfully changed our weather patterns. 

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Scientists and motivated reasoning

by Judith Curry

Motivated reasoning affects scientists as it does other groups in society, although it is often pretended that scientists somehow escape this predicament.

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Proactionary principle

by Judith Curry

Between no action and precaution.

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Available evidence: surface temperatures

by Steven Mosher

Some updates from the Berkeley Earth Surface Temperature project.

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Open thread weekend

It’s your turn to introduce topics for discussion.

Climate model simulations of the AMO

by Judith Curry

What are the implications of climate model deficiencies in simulating multi-decadal natural internal variability  for IPCC’s climate change detection and attribution arguments?

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So what is the best available scientific evidence, anyways?

by Judith Curry

Is “best available evidence” a new, improved “reframing” of the so-called “consensus” (that is not really holding up too well, these days)? Is it simply a way of sweeping aside the validity of any acknowledgement/discussion of the uncertainties? Or is it something completely different?! – Hilary Ostrov

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Impact of climate, population and CO2 on water resources

by Judith Curry

Increasing CO2 may actually help relieve the water stress associated with increasing global population.

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Climate Science & Sociology

by Johanna

The politicisation of climate science is perhaps best illustrated by the emerging role of the social sciences in placing interpretations on human perception of, and responses to, “the science.”

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Open thread weekend

by Judith Curry

It’s your turn to introduce topics for discussion,

After Climategate . . . never the same (?)

by Judith Curry

Has Climategate been a good thing? – Mike Hulme

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Himalayan melt impacts

by Judith Curry

A new publication in Nature Geoscience projects an increase in runoff from Himalayan catchmants during the 21st century, despite a decline in glacier size.

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Conflicts between climate and energy priorities

by Judith Curry

The world’s poor need more than a token supply of electricity.  The goal should be to provide the power necessary to boost productivity and raise living standards.  – Morgan Brazilian and Roger Pielke Jr.

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(Ir)responsible advocacy by scientists

by Judith Curry

Advocacy by scientists seems to be the issue of the week.  What (if anything) constitutes responsible advocacy by scientists?

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