Simulated density currents in idealized stratified environments

Monthly Weather Review

Volumn 128, Issue 5, 2000, Pages 1420-1437

  Liu, Changhai ^a   Moncrieff, Mitchell W ^a  

^a NATIONAL CENTER FOR ATMOSPHERIC RESEARCH   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ATMOSPHERIC MOTION; DENSITY CURRENT; NUMERICAL MODEL; STRATIFIED FLOW;

EID: 0033913070     PISSN: 00270644     EISSN: None     Source Type: Journal    
DOI: 10.1175/1520-0493(2000)128<1420:SDCIIS>2.0.CO;2     Document Type: Article

References (26)

1. Benjamin, T. B., 1968: Gravity currents and related phenomena. J. Fluid Mech., 31, 209-248.
2. Bischoff-Gauss, I., and G. Gross, 1989: Numerical studies on cold fronts. Part I: Gravity flows in a neutral and stratified atmosphere. Meteor. Atmos. Phys., 40, 150-158.
3. Chen, C., 1995: Numerical simulations of gravity currents in uniform shear flows. Mon. Wea. Rev., 123, 3240-3253.
4. Clark, T. L., 1977: A small-scale dynamic model using a terrain-following coordinate transformation. J. Comput. Phys., 24, 186-215.
5. Clarke, R. E., R. K. Smith, and D. G. Reid, 1981: The morning glory of the Gulf of Carpentaria: An atmospheric undular bore. Mon. Wea. Rev., 109, 1733-1750.
6. Crook, N. A., 1986: The effect of ambient stratification and moisture on the motion of atmospheric undular bores. J. Atmos. Sci., 43, 171-181.
7. _, 1988: Trapping of low-level internal gravity waves. J. Atmos. Sci., 45, 1533-1541.
8. _, and M. J. Miller, 1985: A numerical and analytical study of atmospheric undular bores. Quart. J. Roy. Meteor. Soc., 111, 225-242.
9. Doviak, R. J., and R. S. Ge, 1984: An atmospheric solitary gust observed with a Doppler radar, a tall tower, and a surface network. J. Atmos. Sci., 41, 2559-2573.
10. Droegemeier, K. K., and R. B. Wilhelmson, 1986: Kelvin-Helmholtz instability in a numerically simulated thunderstorm outflow. Bull. Amer. Meteor. Soc., 67, 416-417.
11. _, and _, 1987: Numerical simulation of thunderstorm outflow dynamics. Part I: Outflow sensitivity experiments and turbulence dynamics. J. Atmos. Sci., 44, 1180-1210.
12. Haase, S. P., and R. K. Smith, 1989: The numerical simulation of atmospheric gravity currents. Part II: Environments with stable layers. Geophys. Astrophys. Fluid Dyn., 46, 35-51.
13. Jin, Y., S. E. Koch, Y.-L. Lin, F. M. Ralph, and C. Chen, 1996: Numerical simulations of an observed gravity current and gravity waves in an environment characterized by complex stratification and shear. J. Atmos. Sci., 53, 3570-3588.
14. Liu, C.-H., and M. W. Moncrieff, 1996a: A numerical study of the effects of ambient flow and shear on density currents. Mon. Wea. Rev., 124, 2282-2303.
15. _, and _, 1996b: An analytical study of density currents in sheared, stratified fluids including the effects of latent heating. J. Atmos. Sci., 53, 3303-3312.
16. Moncrieff, M. W., and D. W. K. So, 1989: A hydrodynamical theory of conservative bounded density currents. J. Fluid Mech., 198, 177-197.
17. _, and C.-H. Liu, 1999: Convection initiation by density currents: Role of convergence, shear, and dynamical organization. Mon. Wea. Rev., 127, 2455-2464.
18. Physick, W. L., 1976: A numerical model of the sea-breeze phenomenon over a lake or gulf. J. Atmos. Sci., 33, 2107-2135.
19. Raymond, D. J., and R. Rotunno, 1989: Response of a stably stratified flow to cooling. J. Atmos. Sci., 46, 2830-2837.
20. Simpson, J. E., 1987: Gravity Currents in the Environment and Laboratory. Ellis Horwood Limited, 244 pp.
21. Smith, R. K., M. J. Reeder, N. J. Tapper, and D. R. Christie, 1995: Central Australian cold fronts. Mon. Wea. Rev., 123, 16-38.
22. Thorpe, A. J., M. J. Miller, and M. W. Moncrieff, 1980: Dynamical models of two-dimensional downdraughts. Quart. J. Roy. Meteor. Soc., 106, 463-484.
23. Xu, Q., 1992: Density currents in shear flows - A two-fluid model. J. Atmos. Sci., 49, 511-524.
24. _, and M. W. Moncrieff, 1994: Density current circulations in shear flows. J. Atmos. Sci., 51, 434-446.
25. _, M. Xue, and K. E. Droegemeier, 1996: Numerical simulations of density currents in sheared environments within a vertically confined channel. J. Atmos. Sci., 53, 770-786.
26. Xue, M., Q. Xu, and K. E. Droegemeier, 1997: A theoretical and numerical study of density currents in nonconstant shear flows. J. Atmos. Sci., 54, 1998-2019.