Search Results for: validation

Verification, validation, and uncertainty quantification in scientific computing

by Judith Curry I think I am gaining some insight into the debate between scientists versus engineers regarding climate model verification and validation.

Climate model verification and validation: Part II

I’m starting a new thread for this topic, since interest in the previous thread has re-generated owing to this AGU abstract by Steve Easterbrook, entitled Do Over or Make Do?  Climate Models as a Software Development Challenge.

Climate model verification and validation

by Judith Curry On the thread building confidence in climate models , a small amount of text was devoted to verification and validation (V&V).  In raising the level of the game, I included the following bullet: • Fully documented verification … Continue reading

Week in review – science edition

by Judith Curry A few things that caught my eye this past week.

What’s the worst case? A possibilistic approach

by Judith Curry Are all of the ‘worst-case’ climate scenarios and outcomes described in assessment reports, journal publications and the media plausible? Are some of these outcomes impossible? On the other hand, are there unexplored worst-case scenarios that we have … Continue reading

Week in review – science edition

by Judith Curry A few things that caught my eye this past week.

Week in review – science edition

by Judith Curry A few things that caught my eye this past week.

Sea level rise: what’s the worst case?

by Judith Curry Draft of article to be submitted for journal publication.

Warming patterns are unlikely to explain low historical estimates of climate sensitivity

By Nic Lewis A critique of of a new paper by Andrews  et al., Accounting for changing temperature patterns increases historical estimates of climate sensitivity.

Climate uncertainty & risk

by Judith Curry I’ve been invited to write an article on climate uncertainty and risk.

Manufacturing consensus: the early history of the IPCC

by Judith Curry Short summary: scientists sought political relevance and allowed policy makers to put a big thumb on the scale of the scientific assessment of the attribution of climate change.

Reply to Patrick Brown’s response to comments on his Nature article

by Nic Lewis My reply to Patrick Brown’s response to my my comments on his Nature article.

Greater future global warming (still) predicted from Earth’s recent energy budget

by Patrick Brown A response to Nic Lewis’ post A closer look shows global warming will not be greater than we thought.

Brown and Caldeira: A closer look shows global warming will not be greater than we thought

by Nic Lewis A critique of a recent paper by Brown and Caldeira published in Nature that predicted greater than expected global warming.

Estimating the cost to America of damage from climate change in the 21st century

  by Larry Kummer, originally posted at the Fabius Maximus website. Another peer-reviewed paper predicting disaster from climate change by misrepresenting and exaggerating the science. We can still learn much from it.

Uncertainty about the Climate Uncertainty Monster

by Judith Curry The many dimensions of the climate uncertainty monster.

The politics of knowledge

by Judith Curry One needs to ask good questions about whose claims to trust and why. – Sheila Jasanoff

Uncertainties in sea surface temperatures

by Judith Curry Two new papers have focused on the quality, uncertainties and  interpretation of global sea surface temperature data.

Internal climate variability as a confounding factor in climate sensitivity estimates

by Frank Bosse Towards eliminating multi-decadal natural oscillations in determination of the Transient Climate Response (TCR) to CO2.

Earth to Trump

by Judith Curry Defending NASA’s Earth Science Division, in terms that the Trump administration can relate to.

Climate models for lawyers

by Judith Curry I have been asked to write an Expert Report on climate models. ***SEE UPDATE

Climate modelers open up their black boxes to scrutiny

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

Tamino’s adjusted temperature records and the TCR

by Frank Bosse Separating out the impacts of internal variability on evaluations of TCR.

Dust deposition on ice sheets: a mechanism for termination of ice ages?

by Donald Rapp In a recent paper, Ellis and Palmer (2016) proposed that deposition of dust on giant ice sheets, thus reducing their albedo, was a principal factor in the termination of Ice Ages over the past 800 kyrs.

Global climate models and the laws of physics

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.