The Evolution of a Hurricane–Trough Interaction from a Satellite Perspective

Deborah E. Hanley Center for Ocean–Atmospheric Prediction Studies, The Florida State University, Tallahassee, Florida

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Abstract

A case study is presented that describes the interaction of Hurricane Bertha (1996) with an extratropical upper-tropospheric trough shortly before the hurricane's landfall in North Carolina. This case study illustrates the evolution of the interaction as seen in water vapor satellite imagery. The similarity of the features in the satellite images to those in gridded analyses of potential vorticity in the upper troposphere suggests that some types of trough interactions may be identifiable from satellite imagery.

Corresponding author address: Dr. Deborah E. Hanley, Center for Ocean–Atmospheric Prediction Studies, The Florida State University, 227 Johnson Bldg., Tallahassee, FL 32306-2840. Email: hanley@coaps.fsu.edu

Abstract

A case study is presented that describes the interaction of Hurricane Bertha (1996) with an extratropical upper-tropospheric trough shortly before the hurricane's landfall in North Carolina. This case study illustrates the evolution of the interaction as seen in water vapor satellite imagery. The similarity of the features in the satellite images to those in gridded analyses of potential vorticity in the upper troposphere suggests that some types of trough interactions may be identifiable from satellite imagery.

Corresponding author address: Dr. Deborah E. Hanley, Center for Ocean–Atmospheric Prediction Studies, The Florida State University, 227 Johnson Bldg., Tallahassee, FL 32306-2840. Email: hanley@coaps.fsu.edu

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  • Appenzeller, C., and Davies H. C. , 1992: Structure of stratospheric intrusions into the troposphere. Nature, 358 , 570572.

  • Appenzeller, C., and Norton W. A. , 1996: Fragmentation of stratospheric intrusions. J. Geophys. Res., 101 , 14351456.

  • Bosart, L. F., Velden C. S. , Bracken W. E. , Molinari J. , and Black P. G. , 2000: Environmental influences on the rapid intensification of Hurricane Opal (1995) over the Gulf of Mexico. Mon. Wea. Rev., 128 , 322352.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Dean, D. B., and Bosart L. F. , 1996: Northern Hemisphere 500-hPa trough merger and fracture: A climatology and case study. Mon. Wea. Rev., 124 , 26442671.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • DeMaria, M., Baik J-J. , and Kaplan J. , 1993: Upper-level eddy angular momentum fluxes and tropical cyclone intensity change. J. Atmos. Sci., 50 , 11331147.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Demirtas, M., and Thorpe A. J. , 1999: Sensitivity of short-range weather forecasts to local potential vorticity modifications. Mon. Wea. Rev., 127 , 922939.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Emanuel, K. A., 1986: An air–sea interaction theory for tropical cyclones. Part I: Steady-state maintenance. J. Atmos. Sci., 43 , 585604.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Emanuel, K. A., Neelin J. D. , and Bretherton C. S. , 1994: On the large-scale circulations in convecting atmospheres. Quart. J. Roy. Meteor. Soc., 120 , 11111144.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Gallina, G. M., and Velden C. S. , 2000: A quantitative look at the relationship between environmental vertical wind shear and tropical cyclone intensity change utilizing enhanced satellite wind information. Preprints, 24th Conf. on Hurricanes and Tropical Meteorology, Fort Lauderdale, FL, Amer. Meteor. Soc., 256–257.

    • Search Google Scholar
    • Export Citation
  • Hanley, D., 1999: The effect of trough interactions on tropical cyclone intensity change. Ph.D. dissertation, University at Albany, State University of New York, 164 pp.

    • Search Google Scholar
    • Export Citation
  • Hanley, D., Molinari J. , and Keyser D. , 2001: A composite study of the interactions between tropical cyclones and upper-tropospheric troughs. Mon. Wea. Rev., 129 , 25702584.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 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., 64–80.

    • Search Google Scholar
    • Export Citation
  • Jarvinen, B. R., Neumann C. J. , and Davis M. A. S. , 1984: A tropical cyclone data tape for the North Atlantic basin, 1886–1983: Contents, limitations and uses. NOAA Tech. Memo. NWS NHC-22, 21 pp.

    • Search Google Scholar
    • Export Citation
  • Mansfield, D. A., 1997: The use of potential vorticity and water vapour imagery to validate numerical models. Meteor. Appl., 4 , 305309.

  • Molinari, J., 1993: Environmental controls on eye wall cycles and intensity change in Hurricane Allen (1980). Tropical Cyclone Disasters, J. Lighthill et al., Eds., Peking University Press, 328–337.

    • Search Google Scholar
    • Export Citation
  • Molinari, J., and Vollaro D. , 1989: External influences on hurricane intensity. Part I: Outflow layer eddy momentum fluxes. J. Atmos. Sci., 46 , 10931105.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Molinari, J., . 1990: External influences on hurricane intensity. Part II: Vertical structure and response of the hurricane vortex. J. Atmos. Sci., 47 , 19021918.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Molinari, J., and Robasky F. , 1992: Use of ECMWF operational analyses for studies of the tropical cyclone environment. Meteor. Atmos. Phys., 47 , 127144.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Molinari, J., Skubis S. , and Vollaro D. , 1995: External influences on hurricane intensity. Part III: Potential vorticity structure. J. Atmos. Sci., 52 , 35933606.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Pasch, R., and Avila L. , 1999: Atlantic hurricane season of 1996. Mon. Wea. Rev., 127 , 581610.

  • Rotunno, R., and Emanuel K. A. , 1987: An air–sea interaction theory for tropical cyclones. Part II: Evolutionary study using a nonhydrostatic axisymmetric model. J. Atmos. Sci., 44 , 542561.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Thorncroft, C. D., Hoskins B. J. , and McIntyre M. E. , 1993: Two paradigms of baroclinic-wave life-cycle behaviour. Quart. J. Roy. Meteor. Soc., 119 , 1755.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Velden, C. S., 1987: Satellite observations of Hurricane Elena (1985) using the VAS 6.7-μm “water-vapor” channel. Bull. Amer. Meteor. Soc., 68 , 210215.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Velden, C. S., . 1997: A proposed mechanism for TC deintensification: “Back-door” vertical wind shear. Concept and observational evidence. Preprints, 22d Conf. on Hurricanes and Tropical Meteorology, Fort Collins, CO, Amer. Meteor. Soc., 131–132.

    • Search Google Scholar
    • Export Citation
  • Velden, C. S., Hayden C. M. , Nieman S. J. , Menzel W. P. , Wanzong S. , and Goerss J. S. , 1997: Upper-tropospheric winds derived from geostationary satellite water vapor observations. Bull. Amer. Meteor. Soc., 78 , 173195.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Velden, C. S., Olander T. L. , and Wanzong S. , 1998: The impact of multispectral GOES-8 wind information on Atlantic tropical cyclone track forecasts in 1995. Part I: Dataset methodology, description, and case analysis. Mon. Wea. Rev., 126 , 12021218.

    • Crossref
    • Search Google Scholar
    • Export Citation
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