By choosing a simple mathematical extrapolation over complex climate physics, Wadhams made a classic statistical error that other climate scientists immediately called out:
he ignored natural variability. [
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Mainstream climate models are complex because they simulate thermodynamic laws, shifting wind patterns, cloud formations, and multi-year ocean currents. Wadhams' trend line assumed that the Arctic climate would behave exactly the same way every single consecutive year without any random weather anomalies. When natural variability caused the ice melt to slow down temporarily between 2013 and 2016, his timeline completely collapsed. [
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