Genesis of tropical Eugene (2005) from merging vortices associated with ITCZ breakdowns. Part II: Roles of vortex merger and ambient potential vorticity

Journal of the Atmospheric Sciences

Volumn 66, Issue 7, 2009, Pages 1980-1996

  Kieu, Chanh Q ^a   Zhang, Da Lin ^a  

^a University of Maryland   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ABSOLUTE VORTICITY; BOTTOM LAYERS; CLOUD-RESOLVING SIMULATION; CONVECTIVE VORTICES; CYCLONIC VORTICITY; DIABATIC; DIABATIC HEATING; FLUX CONVERGENCE; HORIZONTAL VORTICITY; INTERTROPICAL CONVERGENCE ZONE; LATENT HEAT RELEASE; MELTING LEVELS; MESOSCALE; PEAK AMPLITUDE; POTENTIAL VORTICITY; RAPID GROWTH; SEA SURFACE TEMPERATURES; SHARP INCREASE; SURFACE HEAT FLUXES; SURFACE PRESSURES; TROPICAL CYCLOGENESIS; TROPICAL STORMS; UPWARD MOTION; VERTICAL SHEAR; VERTICAL STRUCTURES; VORTEX MERGER;

AMPLIFICATION; ATMOSPHERIC TEMPERATURE; BUDGET CONTROL; HEAT FLUX; MERGERS AND ACQUISITIONS; STORMS; TROPICS; TROPOSPHERE; VORTEX FLOW; VORTEX SHEDDING; VORTICITY;

MERGING;

AMBIENT AIR; COMPUTER SIMULATION; CONVECTIVE SYSTEM; CONVERGENCE; CYCLOGENESIS; DIABATIC PROCESS; INTERTROPICAL CONVERGENCE ZONE; LATENT HEAT FLUX; MESOSCALE METEOROLOGY; POTENTIAL VORTICITY; SEA SURFACE TEMPERATURE; SURFACE FLUX; TROPICAL CYCLONE; TROPOSPHERE;

EID: 69949151328     PISSN: 00224928     EISSN: None     Source Type: Journal    
DOI: 10.1175/2008JAS2905.1     Document Type: Article

References (26)

1. Bartels, D. L., and R. A. Maddox, 1991: Midlevel cyclonic vortices generated by mesoscale convective systems. Mon. Wea. Rev., 119, 104-118.
2. Bell, G. D., and D. Keyser, 1993: Shear and curvature vorticity and potential-vorticity interchanges: Interpretation and application to a cutoff cyclone event. Mon. Wea. Rev., 121, 76-102.
3. Bister, M., and K. A. Emanuel, 1997: The genesis of Hurricane Guillermo: TEXMEX analyses and a modeling study. Mon. Wea. Rev., 125, 2662-2682.
4. DeMaria, M., J. A. Knaff, and B. H. Connell, 2001: A tropical cyclone genesis parameter for the tropical Atlantic. Wea. Forecasting, 16, 219-233.
5. Emanuel, K. A., 1987: An air-sea interaction model of intraseasonal oscillations in the tropics. J. Atmos. Sci., 44, 2324-2340.
6. Halverson, J., and Coauthors, 2007: NASA's Tropical Cloud Systems and Processes Experiment. Bull. Amer. Meteor. Soc., 88, 867-882.
7. Haynes, P., and M. McIntyre, 1987: On the evolution of vorticity and potential vorticity in the presence of diabatic heating and frictional or other forces. J. Atmos. Sci., 44, 828-841.
8. Hendricks, E. A., M. T. Montgomery, and C. A. Davis, 2004: The role of "vortical" hot towers in the formation of Tropical Cyclone Diana (1984). J. Atmos. Sci., 61, 1209-1232.
9. Hoskins, B. J., M. E. McIntyre, and A. W. Robertson, 1985: On the use and significance of isentropic potential vorticity maps. Quart. J. Roy. Meteor. Soc., 111, 877-946.
10. Kieu, C. Q., and D.-L. Zhang, 2008: Genesis of Tropical Storm Eugene (2005) from merging vortices associated with the ITCZ breakdowns. Part I. Observational and modeling analyses. J. Atmos. Sci., 65, 3419-3439.
11. McBride, J. L., and R. Zehr, 1981: Observational analysis of tropical cyclone formation. Part II: Comparison of non-developing versus developing systems. J. Atmos. Sci., 38, 1132-1151.
12. Molinari, J., D. Vollaro, S. Skubis, and M. Dickinson, 2000: Origins and mechanisms of eastern Pacific tropical cyclogenesis: A case study. Mon. Wea. Rev., 128, 125-139.
13. Montgomery, M. T., and R. J. Kallenbach, 1997: A theory for vortex Rossby waves and its application to spiral bands and intensity changes in hurricanes. Quart. J. Roy. Meteor. Soc., 123, 435-465.
14. Montgomery, M. T., and J. Enagonio, 1998: Tropical cyclogenesis via convectively forced vortex Rossby waves in a three-dimensional quasi-geostrophic model. J. Atmos. Sci., 55, 3176-3207.
15. Montgomery, M. T., M. E. Nicholls, T. A. Cram, and A. B. Saunders, 2006: A vortical hot tower route to tropical cyclogenesis. J. Atmos. Sci., 63, 355-386.
16. Nieto Ferreira, R., and W. H. Schubert, 1997: Barotropic aspects of ITCZ breakdown. J. Atmos. Sci., 54, 261-285.
17. Prieto, R., B. D. McNoldy, S. R. Fulton, and W. H. Schubert, 2003: A classification of binary tropical cyclone-like vortex interactions. Mon. Wea. Rev., 131, 2656-2666.
18. Riehl, H., and J. S. Malkus, 1958: On the heat balance in the equatorial trough zone. Geophysica, 6, 503-538.
19. Ritchie, E. A., and G. J. Holland, 1997: Scale interactions during the formation of Typhoon Irving. Mon. Wea. Rev., 125, 1377-1396.
20. Simpson, J., E. A. Ritchie, G. J. Holland, J. Halverson, and S. Stewart, 1997: Mesoscale interactions in tropical cyclone genesis. Mon. Wea. Rev., 125, 2643-2661.
21. Wang, C.-C., and G. Magnusdottir, 2006: The ITCZ in the central and eastern Pacific on synoptic time scales. Mon. Wea. Rev., 134, 1405-1421.
22. Wang, X., and D.-L. Zhang, 2003: Potential vorticity diagnosis of a simulated hurricane. Part I: Formulation and quasi-balanced flow. J. Atmos. Sci., 60, 1593-1607.
23. Zhang, D.-L., and J. M. Fritsch, 1987: Numerical simulation of the meso-β scale structure and evolution of the 1977 Johnstown flood. Part II. Inertially stable warm-core vortex and the mesoscale convective complex. J. Atmos. Sci., 44, 2593-2612.
24. Zhang, D.-L., and N. Bao, 1996a: Oceanic cyclogenesis as induced by a mesoscale convective system moving offshore. Part I: A 90-h real-data simulation. Mon. Wea. Rev., 124, 1449-1469.
25. Zhang, D.-L., and N. Bao, 1996b: Oceanic cyclogenesis as induced by a mesoscale convective system moving offshore. Part II: Genesis and thermodynamic transformation. Mon. Wea. Rev., 124, 2206-2226.
26. Zhang, D.-L., Y. Liu, and M. K. Yau, 2001: A multiscale numerical study of Hurricane Andrew (1992). Part IV: Unbalanced flows. Mon. Wea. Rev., 129, 92-107.