Evidence for tilted toroidal circulations in cumulus

Journal of the Atmospheric Sciences

Volumn 64, Issue 6, 2007, Pages 2045-2060

  Damiani, Rick ^a   Vali, Gabor ^a  

^a UNIVERSITY OF WYOMING   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CLOUDS; DATA REDUCTION; DOPPLER RADAR; DRAG; FLOW OF GASES; RADAR REFLECTION; RESEARCH AIRCRAFT; VORTICITY;

INTENSE VORTICAL CIRCULATION; TOROIDAL CIRCULATION; VERTICAL TRAJECTORY;

ATMOSPHERIC MOVEMENTS;

ATMOSPHERIC MOVEMENTS; CLOUDS; DATA REDUCTION; DOPPLER RADAR; DRAG; FLOW OF GASES; RADAR REFLECTION; RESEARCH AIRCRAFT; VORTICITY;

CUMULUS; DOPPLER RADAR; VORTEX FLOW; VORTICITY;

NORTH AMERICA; UNITED STATES; WYOMING;

EID: 34347401077     PISSN: 00224928     EISSN: None     Source Type: Journal    
DOI: 10.1175/JAS3941.1     Document Type: Article

References (40)

1. Ackerman, B., 1958: Turbulence around tropical cumuli. J. Meteor., 15, 69-74.
2. Bluestein, H. W., and C. C. Weiss, 2004: Doppler radar observations of dust devils in Texas. Mon. Wea. Rev., 132, 209-224.
3. Blyth, A. M., 1993: Entrainment in cumulus clouds. J. Appl. Meteor., 32, 626-641.
4. Blyth, A. M., W. A. Cooper, and J. B. Jensen, 1988: A study of the source of entrained air in Montana cumuli. J. Atmos. Sci., 45, 3944-3964.
5. Carpenter, R. L. J., K. K. Droegemeier, and A. M. Blyth, 1998: Entrainment and detrainment in numerically simulated cumulus congestus clouds. Part III: Parcel analysis. J. Atmos. Sci., 55, 3440-3455.
6. Carroll, J. J., and J. A. Ryan, 1970: Atmospheric vorticity and dust devil rotation. J. Geophys. Res., 75, 5179-5184.
7. Chang, Y. K., and A. D. Vakili, 1995: Dynamics of vortex rings in crossflow. Phys. Fluids, 7, 1583-1597.
8. Church, C. R., J. T. Snow, and J. Dessens, 1980: Intense atmospheric vortices associated with a 1000 MW fire. Bull. Amer. Meteor. Soc., 61, 682-694.
9. Cortese, T., and S. Balachandar, 1993: Vortical nature of thermal plumes in turbulent convection. Phys. Fluids, 5, 3226-3232.
10. Cunningham, P., S. L. Goodrick, M. Y. Hussaini, and R. R. Linn, 2005: Coherent vortical structures in numerical simulations of buoyant plumes from wildland fires. Int. J. Wildland Fire, 14, 61-75.
11. Damiani, R., and S. Haimov, 2006: A high-resolution dual-Doppler technique for fixed multi-antenna airborne radar. IEEE Trans. Geosci. Remote Sens., 42, 3475-3489.
12. Damiani, R., S. Haimov, and G. Vali, 2005: High-resolution airborne radar dual-Doppler technique. Preprints, 32d Conf. on Radar Meteorology, Albuquerque, NM, Amer. Meteor. Soc., CD-ROM, P1R.4.
13. Damiani, R., G. Vali, and S. Haimov, 2006: The structure of thermals in cumulus from airborne dual-Doppler radar observations. J. Atmos. Sci., 63, 1432-1450.
14. Davies-Jones, R., 1984: Streamwise vorticity: The origin of updraft rotation in supercell storms. J. Atmos. Sci., 41, 2991-3006.
15. Diez, F. J., L. P. Bernai, and G. M. Faeth, 2003: Round turbulent thermals, puffs, starting plumes and starting jets in uniform crossflow. ASME J. Heat Transfer, 125, 1046-1057.
16. Emmitt, G. D., 1978: Tropical cumulus interaction with and modification of the subcloud region. J. Atmos. Sci., 35, 1485-1502.
17. Etling, D., 1985: Some aspects of helicity in atmospheric flows. Beitr. Phys. Atmos., 58, 88-100.
18. Fernando, H. J. S., and D. C. I. Smith, 2001: Vortex structure in geophysical convection. Eur. J. Mech., 20B, 437-470.
19. Fric, T. F., and A. Roshko, 1994: Vortical structure in the wake of a transverse jet. J. Fluid Mech., 279, 1-47.
20. Hauf, T., 1985: Rotating clouds within cloud streets. Beitr. Phys. Atmos., 58, 380-398.
21. Kanak, K. M., D. K. Lilly, and J. T. Snow, 2000: The formation of vertical vortices in the convective boundary layer. Quart. J. Roy. Meteor. Soc., 126, 2789-2810.
22. Kelso, R. M., T. T. Lim, and A. E. Perry, 1996: An experimental study of round jets in cross-flow. J. Fluid Mech., 306, 111-144.
23. Kitchen, M., and S. J. Caughey, 1981: Tethered-balloon observations of the structure of small cumulus clouds. Quart. J. Roy. Meteor. Soc., 107, 853-874.
24. Klemp, J. B., 1987: Dynamics of tornadic thunderstorms. Annu. Rev. Fluid Mech., 19, 369-402.
25. Lilly, D. K., 1986: The structure, energetics, and propagation of rotating convective storms. Part II: Helicity and storm stabilization. J. Atmos. Sci., 43, 126-140.
26. Lim, T. T., T. H. New, and S. C. Luo, 2001: On the development of large-scale structures of a jet normal to a cross flow. Phys. Fluids, 13, 770-775.
27. Malkus, J. S., 1954: Some results of a trade-cumulus cloud investigation. J. Atmos. Sci., 11, 220-237.
28. Maxworthy, T., 1973: A vorticity source for large-scale dust devils and other comments on naturally occurring columnar vortices. J. Atmos. Sci., 30, 1717-1722.
29. Morton, B. R., 1997a: Discrete dry convective entities. I: Review. The Physics and Parameterization of Moist Atmospheric Convection, Series C: Mathematical and Physical Sciences, Vol. 505, Kluwer Academic, 143-173.
30. Morton, B. R., 1997b: Discrete dry convective entities. II: Thermals and deflected jets. The Physics and Parameterization of Moist Atmospheric Convection, Series C: Mathematical and Physical Sciences, Vol. 505, Kluwer Academic, 175-210.
31. Perry, K. D., and P. V. Hobbs, 1996: Influences of isolated cumulus clouds on the humidity of their surroundings. J. Atmos. Sci., 53, 159-174.
32. Rogers, D. P., J. W. Telford, and S. K. Chai, 1985: Entrainment and the temporal evolution of the microphysics of convective clouds. J. Atmos. Sci., 42, 1846-1858.
33. Rotunno, R., 1981: On the evolution of thunderstorm rotation. Mon. Wea. Rev., 109, 577-586.
34. Scorer, R. S., 1958: Natural Aerodynamics. Vol. 1, International Series of Monographs in Aeronautics and Astronautics, Pergamon, 312 pp.
35. Scorer, R. S., and F. H. Ludlam, 1953: Bubble theory of penetrative convection. Quart. J. Roy. Meteor. Soc., 79, 94-103.
36. Shapiro, A., and Y. L. Kogan, 1994: On vortex formation in multicell convective clouds in a shear-free environment. Atmos. Res., 33, 125-136.
37. Shapiro, A., and M. Kanak, 2002: Vortex formation in ellipsoidal thermal bubbles. J. Atmos. Sci., 59, 2253-2269.
38. Vaillancourt, P. A., M. K. Yau, and W. W. Grabowski, 1997: Upshear and downshear evolution of cloud structure and spectral properties. J. Atmos. Sci., 54, 1203-1217.
39. Woodward, B., 1959: The motion in and around isolated thermals. Quart. J. Roy. Meteor. Soc., 85, 144-151.
40. Zhao, M., and P. H. Austin, 2005: Life cycle of numerically simulated shallow cumulus clouds. Part II: Mixing dynamics. J. Atmos. Sci., 62, 1291-1310.