Subtropical stratospheric mixing linked to disturbances in the polar vortices

  title={Subtropical stratospheric mixing linked to disturbances in the polar vortices},
  author={Darryn W. Waugh},
RANDEL et al.1 have observed tongues of stratospheric air stretching from the tropics into middle latitudes, and conclude that such events may be responsible for transporting significant amounts of stratospheric air across the tropical–mid-latitude barrier2. Here I examine the movements of air parcels during these events using high-resolution contour-trajectory calculations. My calculations suggest that the tongues of tropical air are associated with disturbances of the stratospheric polar… CONTINUE READING

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