A shift in the polar vortex earlier this spring is helping to set the stage for repeated chilly stretches across the central and eastern United States in the weeks ahead, with below-average days ...
The stratospheric polar vortex, the winter engine that traps Arctic cold high above the North Pole, is entering its seasonal collapse. What's left is the lower-level polar vortex core, lingering over ...
The jet streams are high‐altitude, narrow bands of westerly winds that circumnavigate the globe near the tropopause and exert a controlling influence on weather and climate patterns. Variability in ...
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