A quasi‐permeable barrier in the equatorial lower stratosphere | Zendy

Chen Ping | Zendy; Holton James R. | Zendy; Swinbank Richard | Zendy

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A quasi‐permeable barrier in the equatorial lower stratosphere

Author(s) -

Chen Ping,

Holton James R.,

Swinbank Richard

Publication year - 1995

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/94gl02989

Subject(s) - stratosphere , potential vorticity , equator , zonal and meridional , vorticity , positive vorticity advection , isentropic process , atmospheric sciences , potential temperature , climatology , meridional flow , quasi biennial oscillation , lagrangian , tracer , environmental science , geology , physics , meteorology , vortex , latitude , mechanics , geodesy , nuclear physics , mathematical physics

Analyses of global isentropic maps of potential vorticity from the United Kingdom Meteorological Office data assimilation system reveal that there is a region of strong meridional potential vorticity gradients in the equatorial lower stratosphere. A semi‐Lagrangian tracer transport model is used to show that this region of strong PV gradients acts as a quasi‐permeable barrier to cross‐equator mass exchange on isentropic surfaces.

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