Category Archives: climate models

by Judith Curry

Paul Voosen has written a remarkable article in Science about climate model tuning.

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by Tomas Milanovic

There are few scientific concepts that are more often misunderstood in blog debates than Determinism and Predictability. For many commenters, these two concepts are considered to be in fact equivalent, which leads to faulty or irrelevant arguments.

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by Judith Curry

This post is about the practical aspects of generating regional scenarios of climate variability and change for the 21st century.

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by Kip Hansen

Some reflections on NCAR’s Large Ensemble.

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by Dan Hughes

We frequently see the simple statement, “The Laws of Physics”, invoked as the canonical summary of the status of the theoretical basis of GCMs.

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by Pat Michaels and Chip Knappenberger

Perhaps the most frank example of the growing disconnection between forecast and observed climate change was presented by University of Alabama’s John Christy to the Senate Subcommittee on Space, Science, and Competitiveness Committee of the U.S. House of Representatives on December 8.

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by Judith Curry

Are climate models the best tools? A recent Ph.D. thesis from The Netherlands provides strong arguments for ‘no’.

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by Judith Curry

There is growing interest in the scientific, operational and applications communities in developing forecasts that fill the gap between medium range weather forecasts (up to two weeks) and seasonal forecasts (3-6 months).

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by Donald C. Morton

The coincidence of the current plateau in global surface temperatures with the continuing rise in the atmospheric concentration of carbon dioxide has raised many questions about the climate models and their forecasts of serious anthropogenic global warming.

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by Judith Curry

Rarely are the following questions asked:  Is the approach that we are taking to climate modeling adequate?  Could other model structural forms be more useful for advancing climate science and informing policy?

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by Judith Curry

“For the next two decades a warming of about 0.2C per decade is expected for a range of emission scenarios.” – IPCC AR4

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by Judith Curry

Lennart Bengtsson’s recent statement on climate research has elicited a response from Andy Lacis, that directly points to the fundamental debate in climate dynamics.

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by Tomas Milanovic

This essay has been motivated by Isaac Held’s paper [link] arguing for possible emerging simplicity or even linearity in climate dynamics.

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by Judith Curry

In economics, climate science and public health, computer models help us decide how to act. But can we trust them? – Jon Turney

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by Judith Curry

I am in the Netherlands, attending a Workshop on The Roles of Climate Models: Epistemic, Ethical, and  Socio-political Perspectives.

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by Judith Curry

How should we interpret the growing disagreement between observations and climate model projections in the first decades of the 21st century?  What does this disagreement imply for the epistemology of climate models?

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