"Our study shows that anomalous summer jet stream behavior-which we know is favored by human-caused warming yet isn't well captured by current generation climate models-contributed to the unprecedented 2021 Pacific Northwest 'Heat Dome' event,' says Mann.
The researchers found that, prior to the heat dome event, the planetary wave-large-scale atmospheric fluxes in winds that cause weather change-over the Pacific Northwest amplified due to resonance, which is a related process where certain atmospheric conditions align in a way that reinforces the wave's strength and persistence.
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