Image credit: livescience.com
They might do well to remember that historic climate data always show carbon dioxide rises *following* temperature rises, often with quite a long time lag, never leading them, which raises awkward questions for ‘heat-trapping’ theories and climate models based on them.
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A new study from University of Michigan climate researchers concludes that some of the latest-generation climate models may be overly sensitive to carbon dioxide increases and therefore project future warming that is unrealistically high, says Phys.org.
In a letter scheduled for publication April 30 in the journal Nature Climate Change, the researchers say that projections from one of the leading models, known as CESM2, are not supported by geological evidence from a previous warming period roughly 50 million years ago.
The researchers used the CESM2 model to simulate temperatures during the Early Eocene, a time when rainforests thrived in the tropics of…
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