Monthly Archives: October 2010

Decision making under climate uncertainty: Part I

by Judith Curry

Based upon the precautionary principle, the United Nations Convention on Climate Change (UNFCCC) established a qualitative climate goal for the long term: stabilization of the concentrations of greenhouse gasses in the atmosphere. The view of climate change held by the UNFCCC regards both the problem and solution as irreducibly global. This view of the problem has framed the IPCC’s assessment and national funding priorities on the subject of climate science.

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Extended peer community

by Judith Curry

Michael Lowe posted this comment on the Disagreement  thread:

Wouldn’t it be great if more science was like this – hundreds of interested bloggers, laypeople and scientist interracting, arguing, disagreeing, learning. Maybe this is the real postnormal science!

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Uncertainty and the IPCC AR5

by  Judith Curry

I am starting to see some encouraging signs that people (including the IPCC) are paying more attention to the uncertainty issue as it relates to climate change.  Nature has an editorial on this issue that summarizes the situation as:

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Disagreement

by Judith Curry

While my goal is to build bridges, I realize that there is no hope of eliminating disagreement on the climate change issue. Does this mean that we are we forever are doomed (Anthony Watts once referred to it as the world’s longest monopoly game), or do we have some chance of dealing with this issue and the risks it presents in a sensible way?

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Heresy and the creation of monsters

by Judith Curry

I’m having another “Alice down the rabbit hole” moment, in response to the Scientific American article, the explication of the article by its author Michael Lemonick, Scientific American’s survey on whether I am a dupe or a peacemaker, and the numerous discussions in blogosphere.

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Overconfidence in IPCC’s detection and attribution: Part III

by Judith Curry

The focus of this series on detection and attribution is the following statement in the IPCC AR4:

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Water vapor mischief

There is a provocative new paper available at an online discussion journal:

Makarieva, Gorshkov, Sheil, Nobre, Li:  Where do winds come from?  A new theory on how water vapor condensation influences atmospheric pressure and dynamics. link

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Open thread: state of the blog

Not much has caught my interest in terms of climate happenings this week (perhaps this is a symptom associated with the head spinning).

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Overconfidence in IPCC’s detection and attribution. Part II

by Judith Curry

The focus of this series on detection and attribution is the following statement in the IPCC AR4:

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Overconfidence in IPCC’s detection and attribution: Part I

by Judith Curry

Arguably the most important conclusion of IPCC AR4 is the following statement:

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Do IPCC’s emission scenarios fail to comply with the precautionary principle?

by Judith Curry

On the uncertainty monster thread, a scenario was defined as a plausible but unverifiable description of how the system and/or its driving forces may develop in the future.  Scenarios may be regarded as a range of discrete possibilities, often with no a priori allocation of likelihood.  An example is the future greenhouse gas emission scenarios used to force global climate models.

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The culture of building confidence in climate models

by Judith Curry

As climate models become increasingly relevant to policy makers,  they are being criticized  for not undergoing a formal verification and validation (V&V) process analogous to that used in engineering and regulatory applications. Further, claims are being made that climate models have been falsified by failing to predict specific future events.

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What constitutes “dangerous” climate change?

by Judith Curry

The United Nations Framework Convention on Climate Change (UNFCCC ) international environmental treaty (1992) states as its objective:

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What can we learn from climate models?

by Judith Curry

Short answer:  I’m not sure.

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