Relationship between the Polar-Night Jet Oscillation and the Annular Mode

Details Relationship between the Polar-Night Jet Oscillation and the Annular Mode Relationship between the Polar-Night Jet Oscillation and the Annular Mode

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29h.132k&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 8, pp. 132-1, CiteID 1240, DOI 10.1029/2001GL013933

Physics

6

Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics (0341, 0342), Meteorology And Atmospheric Dynamics: Stratosphere/Troposphere Interactions, Global Change: Climate Dynamics (3309)

Scientific paper

The relationship between the Polar-night Jet Oscillation (PJO) and the Annular Mode (AM) is examined based on a correlation analysis of winter in both the Northern Hemisphere (NH) and Southern Hemisphere (SH). The PJO becomes a nearly zonally symmetric structure from the troposphere to the upper stratosphere when a pattern similar to the AM appears at the troposphere. If the signal of the PJO is removed, the signal of the AM exists only in the troposphere, and the persistency of the signal is largely reduced in the stratosphere. This suggests that the AM is essentially a tropospheric process that tends to strongly interact with the PJO in the active season.

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