Summary
Detailed analyses of radiosonde and aircraft data were used to identify regions of stratospheric air incursions into the troposphere and of tropospheric air inflow into the stratosphere. The latter flow phenomenon was associated with a distinct separation between potential vorticity tropopause and stability tropopause. It occurred in the region of confluence between jet branches of different origin and was connected with strong anticyclonic shears which are associated with the presence of a wind maximum above the stability tropopause.
Zusammenfassung
Detaillierte Analysen von Radiosonden- und Flugzeugdaten wurden benützt, um das Eindringen von Stratosphärenluft in die Troposphäre und das Einströmen von troposphärischen Luftmassen in die Stratosphäre zu identifizieren. Der letztere dieser beiden Austauschvorgänge war mit einer signifikanten Differenzierung zwischen potentieller Vorticity-Tropopause und Stabilitätstropopause assoziiert. Er trat in der Konfluenzregion zwischen zwei Strahlstromästen verschiedenen Ursprungs auf und war mit starker, antizyklonaler Scherung verbunden, die im Zusammenhang mit einem Windmaximum oberhalb der Stabilitätstropopause stand.
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Dedicated to Professor Dr. F. Steinhauser on the occasion of his 75th birthday. The reasearch reported in this paper was supported by the National Aeronautics and Space Administration (NASA) under Grant No. NSG 2253, NASA Memorandum of Understanding, AT (29-2) 1816, and by the National Center of Atmospheric Research (NCAR). NCAR is supported by the Atmospheric Science Division of the National Science Foundation.
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Shapiro, M.A., Reiter, E.R., Cadle, R.D. et al. Vertical mass- and trace constituent transports in the vicinity of jet streams. Arch. Met. Geoph. Biokl. B. 28, 193–206 (1980). https://doi.org/10.1007/BF02245351
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DOI: https://doi.org/10.1007/BF02245351