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Mark Richardson

Research Associate, Colorado State University/NASA JPL

Expertise: Remote sensing, satellite data, Clouds, Climate sensitivity, Temperature records

PragerU video on climate change repeats a range of misleading claims by Steven Koonin

“The author of this video, Dr. Steven Koonin, says he is following the scientific reports published by the UN and US government, but by subtly changing wording and choosing not to mention important context this video is very likely to mislead readers.
This style of selective wording and lack of context, an approach called “cherry picking”, applies to every one of Dr. Koonin’s scientific comments.”

Article in The Guardian misleads readers about sensitivity of climate models by narrowly focusing on single study

“The article correctly reports that the most recent versions of some climate models estimate more warming for a given increase in CO2 concentrations. It is also correct in highlighting that how clouds are represented in these models is the likely reason for these higher estimates. However, it does not report all the science available on this topic and its claims are thus misleading.”

Ian Plimer op-ed in The Australian again presents long list of false claims about climate

“This article is a mixture of misdirection, misleading claims, and outright falsehoods. The author attempts to paint a picture of current climate change as simply a continuation of natural changes that have occurred in the past. But this neglects the clear evidence that climate change over the last two centuries has been shown to be largely man-made, that it is much more rapid that anything we have seen in the last two thousand years if not longer, and that it is occurring in the context of a globe with more than 7 billion human inhabitants.”

Washington Examiner op-ed cherry-picks data and misleads readers about climate models

“This article focuses only on specific lines of evidence that climate models disagree with observations. In doing so, the authors ignore research that helps to reconcile differences between models and observations. The authors do not consider alternate datasets and time periods in which models and observations agree. Models are one tool for understanding climate change; their overall credibility does not hinge on one variable, in one domain, over a specific time period, with respect to a set of imperfect observations.”

Breitbart article baselessly claims a study of past climate invalidates human-caused climate change

“By the reasoning of this article, if a rock rolled down a hill three million years ago, no human can be responsible for rolling a rock down a hill today. The fallaciousness of this reasoning is astounding.
It is hard to imagine that a well-intentioned person can so profoundly misunderstand the science. Assuming the author is acting in good faith, this article provides evidence that motivated reasoning can produce results that appear delusional to well-informed people.”

Western Journal op-ed deceives readers with completely unsupported claims

“What would make their case stronger would be if they actually analysed all the data, engaged with the existing scientific literature and made their own contribution to our scientific understanding by publishing a scientific paper. The cherry picking exercise in this Western Journal article does not contribute to our scientific understanding of the world.”