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  • Bloomfield, P., 1976: Fourier Analysis of Time Series: An Introduction. Wiley-Interscience, 258 pp.

  • Brunet, G., and P. H. Haynes, 1996: Low-latitude reflection of Rossby wave trains. J. Atmos. Sci., 53 , 482–496.

  • Chang, E. K. M., 1993: Downstream development of baroclinic waves as inferred from regression analysis. J. Atmos. Sci., 50 , 2038–2053.

    • Search Google Scholar
    • Export Citation

  • Chang, E. K. M., 2000: Wave packets and life cycles of troughs in the upper troposphere: Examples from the Southern Hemisphere summer season of 1984/85. Mon. Wea. Rev., 128 , 25–50.

    • Search Google Scholar
    • Export Citation

  • Chang, E. K. M., 2001: The structure of baroclinic wave packets. J. Atmos. Sci., 58 , 1694–1713.

  • Chang, E. K. M., and I. Orlanski, 1994: On energy flux and group velocity of waves in baroclinic flows. J. Atmos. Sci., 51 , 3823–3828.

    • Search Google Scholar
    • Export Citation

  • Chang, E. K. M., and D. B. Yu, 1999: Characteristics of wave packets in the upper troposphere. Part I: Northern Hemisphere winter. J. Atmos. Sci., 56 , 1708–1728.

    • Search Google Scholar
    • Export Citation

  • Danielson, R. E., J. R. Gyakum, and D. Straub, 2004: Examples of downstream baroclinic development among 41 coldseason eastern North Pacific cyclones. Atmos.–Ocean, 42 , 235–250.

    • Search Google Scholar
    • Export Citation

  • Danielson, R. E., J. R. Gyakum, and D. Straub, 2006: A case study of downstream baroclinic development over the North Pacific Ocean. Part I: Dynamical impacts. Mon. Wea. Rev., 134 , 1534–1548.

    • Search Google Scholar
    • Export Citation

  • Edmon, H. J., B. J. Hoskins, and M. E. McIntyre, 1980: Eliassen–Palm cross sections for the troposphere. J. Atmos. Sci., 37 , 2600–2616.

    • Search Google Scholar
    • Export Citation

  • Enomoto, T., and Y. Matsuda, 1999: Rossby wavepacket propagation in a zonally-varying basic flow. Tellus, 51A , 588–602.

  • Hakim, G. J., 2000: Climatology of coherent structures on the extratropical tropopause. Mon. Wea. Rev., 128 , 385–406.

  • Hakim, G. J., 2003: Developing wave packets in the North Pacific storm track. Mon. Wea. Rev., 131 , 2824–2837.

  • Hoskins, B. J., 1990: Theory of extratropical cyclones. Extratropical Cyclones: The Erik Palmén Memorial Volume, C. W. Newton, and E. O. Holopainen, Eds., Amer. Meteor. Soc., 63–80.

    • Search Google Scholar
    • Export Citation

  • Joung, C. H., and M. H. Hitchman, 1982: On the role of successive downstream development in East Asian polar air outbreaks. Mon. Wea. Rev., 110 , 1224–1237.

    • Search Google Scholar
    • Export Citation

  • Kalnay, E., and Coauthors, 1996: The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer. Meteor. Soc., 77 , 437–471.

  • Lackmann, G. M., D. Keyser, and L. F. Bosart, 1999: Energetics of an intensifying jet streak during the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA). Mon. Wea. Rev., 127 , 2777–2795.

    • Search Google Scholar
    • Export Citation

  • Lee, S., and I. M. Held, 1993: Baroclinic wave packets in models and observations. J. Atmos. Sci., 50 , 1413–1428.

  • Longuet-Higgins, M. S., 1964: On group velocity and energy flux in planetary wave motions. Deep-Sea Res., 11 , 35–42.

  • Magnusdottir, G., and P. H. Haynes, 1996: Wave activity diagnostics applied to baroclinic wave life cycles. J. Atmos. Sci., 53 , 2317–2353.

    • Search Google Scholar
    • Export Citation

  • Orlanski, I., 1994: Energy dispersion vs baroclinic conversion in the life cycle of atmospheric eddies. Proc. Int. Symp. on Life Cycles of Extratropical Cyclones, Vol. II, Bergen, Norway, Aase Grafiske A/S, 313–317.

    • Search Google Scholar
    • Export Citation

  • Orlanski, I., and J. Katzfey, 1991: The life cycle of a cyclone wave in the Southern Hemisphere. Part I: Eddy energy budget. J. Atmos. Sci., 48 , 1972–1998.

    • Search Google Scholar
    • Export Citation

  • Orlanski, I., and E. K. M. Chang, 1993: Ageostrophic geopotential fluxes in downstream and upstream development of baroclinic waves. J. Atmos. Sci., 50 , 212–225.

    • Search Google Scholar
    • Export Citation

  • Orlanski, I., and J. P. Sheldon, 1993: A case of downstream baroclinic development over western North America. Mon. Wea. Rev., 121 , 2929–2950.

    • Search Google Scholar
    • Export Citation

  • Orlanski, I., and J. P. Sheldon, 1995: Stages in the energetics of baroclinic systems. Tellus, 47A , 605–628.

  • Pedlosky, J., 1987: Geophysical Fluid Dynamics. 2d ed. Springer–Verlag, 710 pp.

  • Plumb, R. A., 1983: A new look at the energy cycle. J. Atmos. Sci., 40 , 1669–1688.

  • Plumb, R. A., 1986: Three-dimensional propagation of transient quasi-geostrophic eddies and its relationship with the eddy forcing of the time-mean flow. J. Atmos. Sci., 43 , 1657–1678.

    • Search Google Scholar
    • Export Citation

  • Takaya, K., and H. Nakamura, 1997: A formulation of a wave-activity flux for stationary Rossby waves on a zonally varying basic flow. Geophys. Res. Lett., 24 , 2985–2988.

    • Search Google Scholar
    • Export Citation

  • Takaya, K., and H. Nakamura, 2001: A formulation of a phase-independent wave-activity flux for stationary and migratory quasigeostrophic eddies on a zonally varying basic flow. J. Atmos. Sci., 58 , 608–627.

    • Search Google Scholar
    • Export Citation

  • Thorncroft, C. D., B. J. Hoskins, and M. E. McIntyre, 1993: Two paradigms of baroclinic-wave life-cycle behaviour. Quart. J. Roy. Meteor. Soc., 119 , 17–55.

    • Search Google Scholar
    • Export Citation

  • Vanneste, J., and T. G. Shepherd, 1998: On the group-velocity property for wave-activity conservation laws. J. Atmos. Sci., 55 , 1063–1068.

    • Search Google Scholar
    • Export Citation

  • Zimin, A. V., I. Szunyogh, D. J. Patil, B. R. Hunt, and E. Ott, 2003: Extracting envelopes of Rossby wave packets. Mon. Wea. Rev., 131 , 1011–1017.

    • Search Google Scholar
    • Export Citation
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Article Type:
Research Article

A Case Study of Downstream Baroclinic Development over the North Pacific Ocean. Part II: Diagnoses of Eddy Energy and Wave Activity

Richard E. Danielson1, John R. Gyakum1, and David N. Straub1
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  • 1 Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada
Print Publication:
01 May 2006
DOI:
https://doi.org/10.1175/MWR3173.1
Page(s):
1549–1567
Restricted access

Abstract

The sequential development of a western, and then an eastern, North Pacific cyclone is examined in terms of eddy energy and a phase-independent wave activity. Based on the propagation of both a contiguous wave activity center and eddy energy, the development of the western cyclone appears to influence its downstream neighbor. A quantitative comparison of these two diagnoses is made in terms of group velocity, and only minor differences are found during much of the initial evolution. It is only once the tropopause undulations lose their wavelike appearance (at which point, application of the group-velocity concept itself becomes quite tenuous) that the downstream propagation of eddy energy seems faster than that of wave activity. Conventional methods of tracking this wave packet are also briefly discussed.

Corresponding author address: Rick Danielson, Department of Oceanography, Dalhousie University, 1355 Oxford Street, Halifax NS B3H 4J1, Canada. Email: rick@phys.ocean.dal.ca

Abstract

The sequential development of a western, and then an eastern, North Pacific cyclone is examined in terms of eddy energy and a phase-independent wave activity. Based on the propagation of both a contiguous wave activity center and eddy energy, the development of the western cyclone appears to influence its downstream neighbor. A quantitative comparison of these two diagnoses is made in terms of group velocity, and only minor differences are found during much of the initial evolution. It is only once the tropopause undulations lose their wavelike appearance (at which point, application of the group-velocity concept itself becomes quite tenuous) that the downstream propagation of eddy energy seems faster than that of wave activity. Conventional methods of tracking this wave packet are also briefly discussed.

Corresponding author address: Rick Danielson, Department of Oceanography, Dalhousie University, 1355 Oxford Street, Halifax NS B3H 4J1, Canada. Email: rick@phys.ocean.dal.ca

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