Advertisement

Vertical mass- and trace constituent transports in the vicinity of jet streams

  • M. A. Shapiro
  • E. R. Reiter
  • R. D. Cadle
  • W. A. Sedlacek
Article

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.

Keywords

Vorticity Potential Vorticity Wind Maximum Flow Phenomenon Distinct Separation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Der Vertikaltransport von Luftmassen und Spurenstoffen im Bereich von Strahlströmen

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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Cadle, R. D., Shapiro, M. A., Langer, G.: Concentrations of Condensation Nuclei in the Vicinity of Jet Stream Maxima. Arch. Met. Geoph. Biokl., Ser. A28, 1–10 (1979).Google Scholar
  2. 2.
    Reed, R. J.: A Study of a Characteristic Type of Upper-Level Frontogenesis. J. Met.12, 226–237 (1955).Google Scholar
  3. 3.
    Reiter, E. R.: Die vertikale Struktur des Strahlstromkernes aus Forschungsflügen des Project Jet Stream. Ber. Dtsch. Wetterdienstes80, 99 (1962).Google Scholar
  4. 4.
    Reiter, E. R.: Stratospheric-Tropospheric Exchange Processes. Rev. Geophys. Space Phys.13 (4), 459–474 (1975).Google Scholar
  5. 5.
    Reiter, E. R., Nania, A.: Jet Stream Structure and Clear-Air Turbulence (CAT). J. Appl. Met.3 (3), 247–260 (1964).Google Scholar
  6. 6.
    Reiter, E. R., Whitney, L. F.: Interaction Between Subtropical and Polar-Front Jet Stream. Mon. Weath. Rev.97 (6), 432–438 (1969).Google Scholar
  7. 7.
    Reiter, E. R., Glasser, M. E., Mahlman, J. D.: The Role of the Tropopause in Stratospheric-Tropospheric Exchange Processes. Pure Appl. Geophys.75, 185–218 (1969).Google Scholar
  8. 8.
    Reiter, E. R., Seigel, A. D.: The Detailed Structure of a Frontal Zone. Arch. Met. Geoph. Biokl., Ser. A28 (1), 11–17 (1979).Google Scholar
  9. 9.
    Shapiro, M. A.: The Role of Turbulent Heat Flux in the Generation of Potential Vorticity in the Vicinity of Upper-Level Jet Stream Systems. Mon. Weath. Rev.102, 892–906 (1976).Google Scholar
  10. 10.
    Shapiro, M. A.: Further Evidence of the Mesoscale and Turbulent Structure of Upper-Level Jet Stream-Frontal Zone Systems. Mon. Weath. Rev.106, 1101–1111 (1978).Google Scholar
  11. 11.
    Shapiro, M. A.: Turbulent Mixing Within Tropopause Folds as a Mechanism for the Exchange of Chemical Constituents Between the Stratosphere and Troposphere. J. Atmos. Sci. (accepted for publication) (1980).Google Scholar
  12. 12.
    Steinhauser, F.: Strontium-90 Ablagerungen aus dem Niederschlag über Europa. Wetter und Leben17, 1–13 (1965).Google Scholar
  13. 13.
    Steinhauser, F.: Strontium-90 Deposits From the Precipitation in the Area Between North-Africa and the Arctic. Arch. Met. Geoph. Biokl., Ser. B22, 55–72 (1974).Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • M. A. Shapiro
    • 1
    • 2
    • 3
  • E. R. Reiter
    • 1
    • 2
    • 3
  • R. D. Cadle
    • 1
    • 2
    • 3
  • W. A. Sedlacek
    • 1
    • 2
    • 3
  1. 1.National Center for Atmospheric ResearchU.S.A.
  2. 2.Department of Atmospheric ScienceColorado State UniversityFt. CollinsU.S.A.
  3. 3.Los Alamos Research Laboratory, CNC-11U.S.A.

Personalised recommendations