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Normal mode theory of lee cyclogenesis and the initial value problem

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Summary

An initial value problem is proposed to study the influence of mountains upon atmospheric flows. The normal mode, quasigeostrophic theory of lee cyclogenesis is revisited; in order to model Alpine cyclogenesis, the flow, upon which the mountain acts, should represent a cyclone wave propagating eastward in a sheared zonal current. Two different models are considered in order to describe cyclone waves: an unstable Eady normal mode and a finite amplitude, neutral Rossby mode in the two layer model. It is shown that the topographic modifications proper of normal modes emerge very rapidly from the integration of the initial value problem. It is also shown that an enhanced deepening of the upper level trough can occur when finite amplitude effects are taken into account.

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References

  • Buzzi, A., Tibaldi, S., 1978: Cyclogenesis in the lee of the Alps: a case study.Quart. J. Roy. Meteor. Soc.,104, 271–287.

    Google Scholar 

  • Davies, H. C., Phillips, P. D., 1985: Mountain drag along the Gotthard section during ALPEX.J. Atmos. Sci.,42, 2093–2109.

    Google Scholar 

  • Egger, J., 1974: Numerical experiments on lee cyclogenesis.Mon. Wea. Rev.,102, 847–860.

    Google Scholar 

  • Farrell, B., 1984: Modal and non-modal baroclinic waves.J. Atmos. Sci.,41, 668–673.

    Google Scholar 

  • Pedlosky, J., 1987: Geophysical fluid dynamics (2nd ed.). New York: Springer, 710 pp.

    Google Scholar 

  • Speranza, A., Buzzi, A., Trevisan, A., Malguzzi, P., 1985: A theory of deep cyclogenesis in the lee of the Alps. Part I: Modification of baroclinic instability by localized topography.J. Atmos. Sci. 42, 1521–1535.

    Google Scholar 

  • Tibaldi, S., Buzzi, A., Malguzzi, P., 1980: Orographically induced cyclogenesis: analysis of numerical experiments.Mon. Wea. Rev.,108, 1302–1314.

    Google Scholar 

  • Tosi, E., Fantini, M., Trevisan, A., 1983: Numerical experiments on orographic cyclogenesis: relationship between the development of the lee cyclone and the basic flow characteristics.Mon. Wea. Rev.,111, 799–814.

    Google Scholar 

  • Trevisan, A., Giostra, U. 1990: Dynamical criteria determining lee cyclogenesis.J. Atmos. Sci.,47, 2400–2408.

    Google Scholar 

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Author notes

  1. P. Malguzzi & A. Trevisan

    Present address: Dinamica Atmosferica-FISBAT-CNR, c/o Dip. Fisica, Via Irnerio 46, I-40126, Bologna, Italy

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    1. P. Malguzzi
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    2. A. Trevisan
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    Malguzzi, P., Trevisan, A. Normal mode theory of lee cyclogenesis and the initial value problem. Meteorl. Atmos. Phys. 46, 115–122 (1991). https://doi.org/10.1007/BF01027338

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    • DOI: https://doi.org/10.1007/BF01027338

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