The authors greatly appreciate the superb and laborious efforts of the flight crews and ship crews of the research aircraft and ships in TOGA COARE. Peter Hildebrand and Bradley Smull made extremely helpful comments during the writing and revising of the manuscript. Candace Gudmundson edited the manuscript and Kay Dewar edited the graphics. This research was supported by the following grants: National Science Foundation Grant ATM-9024431, JISAO Cooperative Agreements NA37RJ0198 and NA67R50155, TRMM NASA Grants NAG5-1599 and NAG5-4795, and EOS NASA Grants NAG5-6101 and NAGW-2633.
Betts, A. K., 1974: Thermodynamic classification of tropical convective soundings. Mon. Wea. Rev.,102, 760–764.
Braun, S. A., and R. A. Houze Jr., 1997: The evolution of the 10–11 June 1985 PRE-STORM squall line: Initiation, development of rear inflow, and dissipation. Mon. Wea. Rev.,125, 478–504.
Chang, C.-P., 1977: Viscous internal gravity waves and low-frequency oscillations in the Tropics. J. Atmos. Sci.,34, 901–910.
Chen, S. S., and W. M. Frank, 1993: A numerical study of the genesis of extratropical convective mesovortices. Part I: Evolution and dynamics. J. Atmos. Sci.,50, 2401–2426.
——, and R. A. Houze Jr., 1997: Interannual variability of deep convection over the tropical warm pool. J. Geophys. Res.,102, 25 783–25 795.
——,——, and B. E. Mapes, 1996: Multiscale variability of deep convection in relation to large-scale circulation in TOGA COARE. J. Atmos. Sci.,53, 1380–1409.
Chong, M., and O. Bousquet, 1999: A mesovortex within a near-equatorial mesoscale convective system during TOGA COARE. Mon. Wea. Rev.,127, 1145–1156.
Corbet, J., C. Mueller, C. Burghart, K. Gould, and G. Granger, 1994:Zeb: Software for integration, display, and management of diverse environmental datasets. Bull. Amer. Meteor. Soc.,75, 783–792.
Cressman, G. P., 1959: An operational objective analysis system. Mon. Wea. Rev.,87, 367–374.
Dudhia, J., and M. W. Moncrieff, 1987: A numerical simulation of quasi-stationary tropical convective bands. Quart. J. Roy. Meteor. Soc.,113, 929–967.
Fein, J. S., and J. P. Kuettner, 1980: Report on the summer MONEX field phase. Bull. Amer. Meteor. Soc.,61, 461–474.
Fovell, R. G., and Y. Ogura, 1988: Numerical simulation of a midlatitude squall line in two dimensions. J. Atmos. Sci.,45, 3846–3879.
——, and ——, 1989: Effect of vertical wind shear on numerically simulated multicell storm structure. J. Atmos. Sci.,46, 3144–3176.
Gill, A., 1980: Some simple solutions for heat-induced tropical circulation. Quart. J. Roy. Meteor. Soc.,106, 447–462.
Godfrey, J. S., R. A. Houze Jr., R. H. Johnson, R. Lukas, J.-L. Redelsperger, A. Sumi, and R. Weller, 1998: COARE: An interim report. J. Geophys. Res.,103 (7), 14 395–14 450.
Greenfield, R. S., and T. N. Krishnamurti, 1979: The Winter Monsoon Experiment—Report of December 1978 field phase. Bull. Amer. Meteor. Soc.,60, 439–444.
Halverson, J. B., B. S. Ferrier, T. M. Rickenbach, J. Simpson, and W.-K. Tao, 1999: An ensemble of convective systems on 11 February 1993 during TOGA COARE: Morphology, rainfall characteristics, and anvil cloud interactions. Mon. Wea. Rev.,127, 1208–1228.
Hartmann, D. L., H. H. Hendon, and R. A. Houze Jr., 1984: Some implications of the mesoscale circulations in tropical cloud clusters for large-scale dynamics and climate. J. Atmos. Sci.,41, 113–121.
Hendon, H. H., and B. Liebmann, 1994: Organization of convection within the Madden–Julian oscillation. J. Geophys. Res.,99, 8073–8083.
——, and M. L. Salby, 1994: The life cycle of the Madden–Julian oscillation. J. Atmos. Sci.,51, 2225–2237.
Hildebrand, P. H., 1998: Shear-parallel moist convection over the tropical ocean: A case study from 18 February 1993 TOGA COARE. Mon. Wea. Rev.,126, 1952–1976.
——, W.-C. Lee, C. A. Walther, C. Frush, M. Randall, E. Loew, R. Neitzel, and R. Parsons, 1996: Airborne Doppler weather radar:High-resolution observations from TOGA COARE. Bull. Amer. Meteor. Soc.,77, 213–232.
Holland, G. J., J. L. McBride, R. K. Smith, D. Jasper, and T. D. Keenan, 1986: The BMRC Australian Monsoon Experiment: AMEX. Bull. Amer. Meteor. Soc.,67, 1466–1472.
Houze, R. A., Jr., 1982: Cloud clusters and large-scale vertical motions in the Tropics. J. Meteor. Soc. Japan,60, 396–410.
——, 1989: Observed structure of mesoscale convective systems and implications for large-scale heating. Quart. J. Roy. Meteor. Soc.,115, 425–461.
——, 1993: Cloud Dynamics. Academic Press, 573 pp.
——, 1997: Stratiform precipitation in regions of convection: A meteorological paradox? Bull. Amer. Meteor. Soc.,78, 2179–2196.
——, S. A. Rutledge, M. I. Biggerstaff, and B. F. Smull, 1989: Interpretation of Doppler weather radar displays of midlatitude mesoscale convective systems. Bull. Amer. Meteor. Soc.,70, 608–619.
——, B. F. Smull, and P. Dodge, 1990: Mesoscale organization of springtime rainstorms in Oklahoma. Mon. Wea. Rev.,118, 613–654.
Johnson, R. H., and X. Lin, 1997: Episodic trade wind regimes over the western Pacific warm pool. J. Atmos. Sci.,54, 2020–2034.
Jorgensen, D. P., T. Matejka, and J. D. DuGranrut, 1996: Multi-beam techniques for deriving wind fields from airborne Doppler radars. Meteor. Atmos. Phys.,59, 83–104.
——, M. A. LeMone, and S. B. Trier, 1997: Structure and evolution of the 22 February 1993 TOGA COARE squall line: Aircraft observations of precipitation, circulation, and surface energy fluxes. J. Atmos. Sci.,54, 1961–1985.
Kingsmill, D. E., and R. A. Houze Jr., 1999a: Kinematic characteristics of air flowing into and out of precipitating convection over the west Pacific warm pool: An airborne Doppler radar survey. Quart. J. Roy. Meteor. Soc.,125, 1165–1207.
——, and ——, 1999b: Thermodynamic characteristics of precipitating convection over the west Pacific warm pool. Quart. J. Roy. Meteor. Soc.,125, 1209–1229.
Kuettner, J. P., and D. E. Parker, 1976: GATE: Report on the field phase. Bull. Amer. Meteor. Soc.,57, 11–27.
Lau, K.-M., L. Peng, C. H. Sui, and T. Nakazawa, 1989: Dynamics of super cloud clusters, westerly wind bursts, 30–60 day oscillations and ENSO: A unified view. J. Meteor. Soc. Japan,67, 205–219.
LeMone, M. A., 1983: Momentum transport by a line of cumulonimbus. J. Atmos. Sci.,40, 1815–1834.
Lewis, S. A., M. A. LeMone, and D. P. Jorgensen, 1998: Evolution and dynamics of a late-stage squall line that occurred on 20 February 1993 during TOGA COARE. Mon. Wea. Rev.,126, 3189–3212.
Lin, X., and R. H. Johnson, 1996: Kinematic and thermodynamic characteristics of the flow over the western Pacific warm pool during TOGA COARE. J. Atmos. Sci.,53, 695–715.
Madden, R., and P. Julian, 1971: Detection of a 40–50 day oscillation in the zonal wind in the tropical Pacific. J. Atmos. Sci.,28, 702–708.
——, and ——, 1972: Description of global scale circulation cells in the Tropics with a 40–50 day period. J. Atmos. Sci.,29, 1109–1123.
——, and ——, 1994: Observations of the 40–50 day tropical oscillation—A review. Mon. Wea. Rev.,122, 814–837.
Mapes, B. E., and R. A. Houze Jr., 1992: An integrated view of the 1987 Australian monsoon and its mesoscale convective systems. Part I: Horizontal structure. Quart. J. Roy. Meteor. Soc.,118, 927–963.
——, and ——, 1993a: An integrated view of the 1987 Australian monsoon and its mesoscale convective systems. Part II: Vertical structure. Quart. J. Roy. Meteor. Soc.,119, 733–754.
——, and ——, 1993b: Cloud clusters and superclusters over the oceanic warm pool. Mon. Wea. Rev.,121, 1398–1415.
——, and ——, 1995: Diabatic divergence profiles in western Pacific mesoscale convective systems. J. Atmos. Sci.,52, 1807–1828.
——, and P. Zuidema, 1996: Radiative–dynamical consequences of dry tongues in the tropical atmosphere. J. Atmos. Sci.,53, 620–638.
Mohr, C. G., L. J. Miller, R. L. Vaughan, and H. W. Frank, 1986: The merger of mesoscale datasets into a common Cartesian format for efficient and systematic analyses. J. Atmos. Oceanic Technol.,3, 143–161.
Moncrieff, M. W., and E. Klinker, 1997: Organized convective systems in the tropical western Pacific as a process in general circulation models: A TOGA COARE case study. Quart. J. Roy. Meteor. Soc.,123, 805–827.
Nakazawa, T., 1988: Tropical super clusters within intraseasonal variations over the western Pacific. J. Meteor. Soc. Japan,66, 823–839.
Oye, R., and R. Carbone, 1981: Interactive Doppler editing software. Preprints, 20th Conf. on Radar Meteorology, Boston, MA, Amer. Meteor. Soc., 683–689.
——, C. Mueller, and S. Smith, 1995: Software for radar translation, visualization, editing, and interpolation. Preprints, 27th Conf. on Radar Meteorology, Vail, CO, Amer. Meteor. Soc., 359–361.
Peterson, W. A., R. C. Cifelli, S. A. Rutledge, B. S. Ferrier, and B. F. Smull, 1999: Shipborne dual-Doppler operations during TOGA COARE: Integrated observations of storm kinematics and electrification. Bull. Amer. Meteor. Soc.,80, 81–97.
Raymond, D. J., 1995: Regulation of moist convection over the west Pacific warm pool. J. Atmos. Sci.,52, 3945–3959.
Rotunno, R., J. B. Klemp, and M. L. Weisman, 1988: A theory for strong, long-lived squall lines. J. Atmos. Sci.,45, 463–485.
Roux, F., 1998: The oceanic mesoscale convective system observed with airborne Doppler radars on 9 February 1993 during TOGA-COARE: Structure, evolution and budgets. Quart. J. Roy. Meteor. Soc.,124, 585–614.
Salby, M. L., 1996: Fundamentals of Atmospheric Physics. Academic Press, 627 pp.
Short, D. A., P. A. Kucera, B. S. Ferrier, J. C. Gerlach, S. A. Rutledge, and O. W. Thiele, 1997: Shipboard radar rainfall patterns within the TOGA COARE IFA. Bull. Amer. Meteor. Soc.,78, 2817–2836.
Skamarock, W. C., M. L. Weisman, and J. B. Klemp, 1994: Three-dimensional evolution of simulated long-lived squall lines. J. Atmos. Sci.,51, 2563–2584.
Smull, B. F., and R. A. Houze Jr., 1987: Rear inflow in squall lines with trailing stratiform precipitation. Mon. Wea. Rev.,115, 2128–2148.
Tao, W.-K., and S.-T. Soong, 1986: A study of the response of deep tropical clouds to mesoscale processes: Three-dimensional numerical experiments. J. Atmos. Sci.,43, 39–62.
Wang, B., 1988: Dynamics of the tropical low-frequency waves: An analysis of the moist Kelvin wave. J. Atmos. Sci.,45, 2051–2065.
Webster, P. J., 1972: Response of the tropical atmosphere to local, steady forcing. Mon. Wea. Rev.,100, 518–540.
——, 1973: Temporal variation of low-latitude circulations. Mon. Wea. Rev.,101, 803–816.
——, 1994: The role of hydrological processes in ocean&ndashm̃osphere interactions. Rev. Geophys.,32, 427–476.
——, and G. L. Stephens, 1980: Tropical upper-tropospheric extended clouds: Inferences from Winter MONEX. J. Atmos. Sci.,37, 1521–1541.
——, and R. A. Houze Jr., 1991: The Equatorial Mesoscale Experiment (EMEX): An overview. Bull. Amer. Meteor. Soc.,72, 1481–1505.
Weisman, M. L., and J. B. Klemp, 1984: The structure and classification of numerically simulated convective storms in directionally varying wind shears. Mon. Wea. Rev.,112, 2479–2498.
——, and ——, 1986: Characteristics of isolated convective storms. Mesoscale Meteorology and Forecasting, P. S. Ray, Ed., Amer. Meteor. Soc., 331–358.
——, ——, and R. Rotunno, 1988: The structure and evolution of numerically simulated squall lines. J. Atmos. Sci.,45, 1990–2013.
Weller, R. A., and S. P. Anderson, 1996: Surface meteorology and air&ndash≃a fluxes in the western equatorial Pacific warm pool during the TOGA Coupled Ocean–Atmosphere Response Experiment. J. Climate,9, 1959–1990.
Xu, K.-M., and K. A. Emanuel, 1989: Is the tropical atmosphere conditionally unstable? Mon. Wea. Rev.,117, 1471–1479.
Yang, M.-J., and R. A. Houze Jr., 1995: Sensitivity of squall-line rear inflow to ice microphysics and environmental humidity. Mon. Wea. Rev.,123, 3175–3193.
Yuter, S. E., and R. A. Houze Jr., 1995: Three-dimensional kinematic and microphysical evolution of Florida cumulonimbus. Part III:Vertical mass transport, mass divergence, and synthesis. Mon. Wea. Rev.,123, 1964–1983.
——, and ——, 1997: Measurements of raindrop size distributions over the Pacific warm pool and implications for Z–R relations. J. Appl. Meteor.,36, 847–867.
——, and ——, 1998: The natural variability of precipitating clouds over the western Pacific warm pool. Quart. J. Roy. Meteor. Soc.,124, 53–99.
——, and ——, 2000: The 1997 Pan American Climate Studies Tropical Eastern Pacific Process Study. Part I: ITCZ region. Bull. Amer. Meteor. Soc.,81, 451–481.
——, ——, B. F. Smull, F. D. Marks Jr., J. R. Daugherty, and S. R. Brodzik, 1995: TOGA COARE aircraft mission summary images: An electronic atlas. Bull. Amer. Meteor. Soc.,76, 319–328.
——, Y. L. Serra, and R. A. Houze Jr., 2000: The 1997 Pan American Climate Studies Tropical Eastern Pacific Process Study. Part II:Stratocumulus region. Bull. Amer. Meteor. Soc.,81, 483–490.
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.
——, and ——, 1988a: Numerical sensitivity experiments of varying model physics on the structure, evolution, and dynamics of two mesoscale convective systems. J. Atmos. Sci.,45, 261–293.
——, and ——, 1988b: Numerical simulation of the meso-β scale structure and evolution of the 1977 Johnstown flood. Part III: Internal gravity waves and the squall line. J. Atmos. Sci.,45, 1252–1268.
——, and K. Gao, 1989: Numerical simulation of an intense squall line during 10–11 June 1985 PRE-STORM. Part II: Rear inflow, surface pressure perturbations and stratiform precipitation. Mon. Wea. Rev.,117, 2067–2094.
Zipser, E. J., 1969: The role of organized unsaturated convective downdrafts in the structure and rapid decay of an equatorial disturbance. J. Appl. Meteor.,8, 799–814.