Running Hot

July 28, 2021

The United Nations Intergovernmental Panel on Climate Change will soon release its latest assessments. But the models used in making the assessments are flawed, many scientists now believe, citing evidence that points to slower atmospheric warming than the models predict. Roger Pielke Jr. and Justin Ritchie make this case in Issues, arguing in particular that estimates of greenhouse gas emissions, which drive atmospheric warming and are a key variable in climate models, are outdated. This creates, they write, “a misleading basis both for developing a scientific evidence base and for informing climate policy discussions.”

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