The authors are grateful to Drs. Kerry Emanuel, Christopher Davis, and Gary Lackmann for their enlightening discussions concerning potential vorticity and balanced flows and for their suggestions of various means for depicting tropospheric distributions of potential vorticity. This material is based upon work supported by the National Science Foundation under Grants ATM-9313785 and ATM-9553284.
Ambaum, M., 1997: Isentropic formation of the tropopause. J. Atmos. Sci.,54, 555–568.
Bell, G. D., and L. F. Bosart, 1988: Appalachian cold-air damming. Mon. Wea. Rev.,116, 137–161.
——, and ——, 1993: A case study diagnosis of the formation of an upper-level cutoff cyclonic circulation over the eastern United States. Mon. Wea. Rev.,121, 1635–1655.
Bellamy, J., 1949: Objective calculations of divergence, vertical velocity, and vorticity. Bull. Amer. Meteor. Soc.,30, 45–49.
Black, R., and R. Dole, 1993: The dynamics of large-scale cyclogenesis over the North Pacific Ocean. J. Atmos. Sci.,50, 421–442.
Bleck, R., 1990: Depiction of upper/lower vortex interaction associated with extratropical cyclogenesis. Mon. Wea. Rev.,118, 573–585.
Bosart, L. F., and J. W. Nielsen, 1993: Radiosonde penetration of an undilute cumulonimbus anvil. Mon. Wea. Rev.,121, 1688–1702.
——, and G. M. Lackmann, 1995: Postlandfall tropical cyclone reintensification in a weakly baroclinic environment: A case study of Hurricane David (September 1979). Mon. Wea. Rev.,123, 3268–3291.
——, G. J. Hakim, K. R. Tyle, M. A. Bedrick, W. E. Bracken, M. J. Dickinson, and D. M. Schultz, 1996: Large-scale antecedent conditions associated with the 12–14 March 1993 cyclone (“Superstorm ’93”) over eastern North America. Mon. Wea. Rev.,124, 1865–1891.
Bresky, W. C., and S. J. Colucci, 1996: A forecast and analyzed cyclogenesis event diagnosed with potential vorticity. Mon. Wea. Rev.,124, 2227–2244.
Bretherton, F. P., 1966: Critical layer instability in baroclinic flows. Quart. J. Roy. Meteor. Soc.,92, 325–334.
Ceselski, B., and L. Sapp, 1975: Objective wind field analysis using line integrals. Mon. Wea. Rev.,103, 89–100.
Charney, J., 1947: The dynamics of long waves in a baroclinic westerly current. J. Meteor.,4, 135–162.
——, 1955: The use of the primitive and balance equations. Tellus,7, 22–26.
——, and M. E. Stern, 1962: On the stability of internal baroclinic jets in a rotating atmosphere. J. Atmos. Sci.,19, 159–172.
Danielsen, E., 1968: Stratospheric–tropospheric exchange based on radioactivity, ozone, and potential vorticity. J. Atmos. Sci.,25, 502–518.
——, and R. Hipskind, 1980: Stratospheric–tropospheric exchange at polar latitudes in summer. J. Geophys. Res.,85, 393–400.
Davis, C. A., 1992a: Piecewise potential vorticity inversion. J. Atmos. Sci.,49, 1397–1411.
——, 1992b: A potential vorticity diagnosis of the importance of initial structure and condensational heating in observed cyclogenesis. Mon. Wea. Rev.,120, 2409–2428.
——, and K. Emanuel, 1991: Potential vorticity diagnostics of cyclogenesis. Mon. Wea. Rev.,119, 1929–1953.
——, M. T. Stoelinga, and Y.-H. Kuo, 1993: The integrated effect of condensation in numerical simulations of extratropical cyclogenesis. Mon. Wea. Rev.,121, 2309–2330.
——, E. D. Grell, and M. A. Shapiro, 1996: The balanced dynamical nature of a rapidly intensifying oceanic cyclone. Mon. Wea. Rev.,124, 3–26.
Defant, F., and H. Taba, 1957: The threefold structure of the atmosphere and the characteristics of the tropopause. Tellus,9, 259–274.
Eady, E., 1949: Long waves and cyclone waves. Tellus,1, 33–42.
Eliassen, A., and E. Kleinschmidt, 1957: Cyclones and anticyclones. Dynamic Meteorology, S. Flugge, Ed., Vol. 48, Springer-Verlag, 112–154.
Emanuel, K., 1985: Frontal circulations in the presence of small moist symmetric instability. J. Atmos. Sci.,42, 1062–1071.
Fritsch, J. M., and R. A. Maddox, 1981: Convectively driven mesoscale weather systems aloft. Part I: Observations. J. Appl. Meteor.,20, 9–19.
Gent, P., and J. McWilliams, 1983: Consistent balanced models in bounded and periodic domains. Dyn. Atmos. Oceans,7, 67–93.
Hakim, G., L. Bosart, and D. Keyser, 1995: The Ohio Valley wave-merger cyclogenesis event of 25–26 January 1978. Part I: Multiscale case study. Mon. Wea. Rev.,123, 2663–2692.
——, ——, and ——, 1996: The Ohio Valley wave-merger cyclogenesis event of 25–26 January 1978. Part II: Diagnosis using quasigeostrophic potential vorticity inversion. Mon. Wea. Rev.,124, 2176–2205.
Held, I., R. Pierrehumbert, S. Garner, and K. Swanson, 1995: Surface quasi-geostrophic dynamics. J. Fluid Mech.,282, 1–20.
Hoerling, M., K. Schaak, and A. Lenzen, 1991: Global objective tropopause analysis. Mon. Wea. Rev.,119, 1816–1831.
Holopainen, E., and J. Kaurola, 1991: Decomposing the atmospheric flow using potential vorticity framework. J. Atmos. Sci.,48, 2614–2625.
Hoskins, B., and M. Pedder, 1980: The diagnosis of middle latitude synoptic development. Quart. J. Roy. Meteor. Soc.,106, 707–719.
——, and P. Berrisford, 1988: A potential vorticity perspective of the storm of 15–16 October ’87. Weather,43, 122–129.
——, M. McIntyre, and A. Roberston, 1985: On the use and significance of isentropic potential vorticity maps. Quart. J. Roy. Meteor. Soc.,111, 877–946.
Joly, A., and A. Thorpe, 1990: Frontal instability generated by tropospheric potential vorticity anomalies. Quart. J. Roy. Meteor. Soc.,116, 525–560.
Juckes, M., 1994: Quasigeostrophic dynamics of the tropopause. J. Atmos. Sci.,51, 2756–2768.
Keyser, D., and M. A. Shapiro, 1986: A review of the structure and dynamics of upper-level frontal zones. Mon. Wea. Rev.,114, 452–499.
Koch, S. E., M. desJardins, and P. J. Kocin, 1983: An interactive Barnes objective map analysis scheme for use with satellite and conventional data. J. Climate Appl. Meteor.,22, 1487–1503.
Lackmann, G. M., D. Keyser, and L. F. Bosart, 1997: A characteristic life cycle of upper-tropospheric cyclogenetic precursors during the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA). Mon. Wea. Rev.,125, 2729–2758.
Lamarque, J.-F., and P. Hess, 1994: Cross-tropopause mass exchange and potential vorticity budget in a simulated tropopause folding. J. Atmos. Sci.,51, 2246–2269.
Morgan, M., 1994: An observationally and dynamically determined basic state of the study of synoptic scale waves. Ph.D. thesis, Massachusetts Institute of Technology, 123 pp. [Available from Michael C. Morgan, University of Wisconsin—Madison, 1225 W. Dayton Street, Madison, WI 53706.].
——, P. Neilley, and R. Dole, 1991: Scale interactions and diabatic processes during the development of an Atlantic blocking event. Preprints, First Int. Symp. on Winter Storms, New Orleans, LA, Amer. Meteor. Soc., 62–65.
National Climatic Data Center, 1988: Storm Data. Vol. 30, No. 10, 76 pp. [Available from the National Climatic Data Center, 151 Patton Ave., Asheville, NC 28801-5001.].
Nielsen, J. W., 1988: Direct analysis of Ertel potential vorticity. Synoptic Meteorology: Notes from an NCAR Summer Colloquium, F. Carr, Ed., National Center for Atmospheric Research, 38–47.
——, C. A. Davis, and D. Keyser, 1991: Upper-level frontogenesis made easy? Preprints, First Int. Symp. on Winter Storms, New Orleans, LA, Amer. Meteor. Soc., 82–87.
Nielsen-Gammon, J., 1995: Dynamical conceptual models of upper-level mobile trough formation: Comparison and application. Tellus,47A, 705–721.
——, and R. Lefevre, 1996: Piecewise tendency diagnosis of the development of an upper-tropospheric mobile trough. J. Atmos. Sci.,53, 3120–3142.
Neiman, P., M. Shapiro, E. Donall, and C. Kreitzberg, 1990: Diabatic modification of an extratropical cyclone warm sector by cold underlying water. Mon. Wea. Rev.,118, 1576–1590.
Palmén, E., and C. W. Newton, 1969: Atmospheric Circulation Systems: Their Structure and Physical Interpretation. Academic Press, 603 pp.
Petterssen, S., and S. Smebye, 1971: On the development of extratropical cyclones. Quart. J. Roy. Meteor. Soc.,97, 457–482.
Platzman, G., 1949: The motion of barotropic disturbances in the upper troposphere. Tellus,1, 53–64.
Reed, R. J., G. A. Grell, and Y.-H. Kuo, 1993: The ERICA IOP5 Storm. Part II: Sensitivity tests and further diagnosis based on model output. Mon. Wea. Rev.,121, 1595–1612.
Robinson, W., 1988: Analysis of LIMS data by potential vorticity inversion. J. Atmos. Sci.,45, 2319–2342.
——, 1989: On the structure of potential vorticity in baroclinic instability. Tellus,41A, 275–284.
Rotunno, R., W. Skamarock, and C. Snyder, 1994: An analysis of frontogenesis in numerical simulations of baroclinic waves. J. Atmos. Sci.,51, 3373–3398.
Sanders, F., and J. Gyakum, 1980: Synoptic–dynamic climatology of the “bomb.” Mon. Wea. Rev.,108, 1589–1606.
Schaefer, J., and C. Doswell III, 1979: On the interpolation of a vector field. Mon. Wea. Rev.,107, 458–476.
Shapiro, M. A., 1980: Turbulent mixing within tropopause folds as a mechanism for the exchange of chemical constituents between the stratosphere and troposphere. J. Atmos. Sci.,37, 994–1004.
——, and D. Keyser, 1990: Fronts, jet streams and the tropopause. Extratropical Cyclones: The Erik Palmén Memorial Volume, C. Newton and E. O. Holopainen, Eds., Amer. Meteor. Soc., 167–191.
——, and E. D. Grell, 1994: In search of synoptic/dynamic conceptualizations of the life cycles of fronts, jet streams, and the tropopause. The Life Cycles of Extratropical Cyclones, Vol. I, S. Gronas and M. A. Shapiro, Eds., Aase Grafiske A/S, 163–181.
——, T. Hampel, and A. J. Krueger, 1987: The Arctic tropopause fold. Mon. Wea. Rev.,115, 444–454.
Spaete, P., D. Johnson, and T. Schaak, 1994: Stratospheric–tropospheric mass exchange during the Presidents’ Day storm. Mon. Wea. Rev.,122, 424–439.
Staley, D., 1962: On the mechanism of mass and radioactivity transport from stratosphere and troposphere. J. Atmos. Sci.,19, 450–467.
Sun, D.-Z., and R. Lindzen, 1994: A PV view of the zonal mean distribution of temperature and wind in the extratropical troposphere. J. Atmos. Sci.,51, 757–772.
Thorncroft, C., B. Hoskins, and M. McIntyre, 1993: Two paradigms of baroclinic-wave life cycle behavior. Quart. J. Roy. Meteor. Soc.,119, 17–55.
Thorpe, A. J., 1986: Synoptic-scale disturbances with circular symmetry. Mon. Wea. Rev.,114, 1384–1389.
——, and C. H. Bishop, 1995: Potential vorticity and the electrostatics analogy: Ertel–Rossby formulation. Quart. J. Roy. Meteor. Soc.,121, 1477–1495.
Uccellini, L. W., 1990: Processes contributing to the rapid development of extratropical cyclones. Extratropical Cyclones: The Erik Palmén Memorial Volume, C. Newton and E. O. Holopainen, Eds., Amer. Meteor. Soc., 81–105.
World Meteorological Organization, 1992: International Meteorological Vocabulary. WMO, 784 pp.
Wu, C.-C., and K. A. Emanuel, 1993: Interaction of a baroclinic vortex with background shear: Application to hurricane movement. J. Atmos. Sci.,50, 62–76.
——, and ——, 1995a: Potential vorticity diagnostics of hurricane movement. Part I: A case study of Hurricane Bob (1991). Mon. Wea. Rev.,123, 69–92.
——, and ——, 1995b: Potential vorticity diagnostics of hurricane movement. Part II: Tropical Storm Ana (1991) and Hurricane Andrew (1992). Mon. Wea. Rev.,123, 93–109.