Abstract
Buoyancy is the dominant mechanism driving turbulence in a convective boundary layer. Such turbulence is not completely random, but is often organized into identifiable structures such as thermals and plumes (Young, 1988). Entertainment happens at a variety of scales: lateral entertainment by small eddies into the sides of thermals, and vertical entertainment on the thermal scale into the whole mixed layer. In this chapter we examine the structure and evolution of the convective boundary layer, and study the forcings acting on it.
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References
Agee, E.M., 1984: Observations from space and thermal convection: a historical perspective. Bull. Am. Meteor. Soc., 65, 938–949.
Agee, E.M., T.S. Chen and K.E. Dowell, 1973: A review of mesoscale cellular convection. J. Appi. Meteor., 13, 46–53.
André, J.-C., J.-P. Goutorbe, and A. Perrier, 1986: HAPEX-MOBILHY, a hydrologic atmospheric pilot experiment for the study of water budget and evaporation flux at the climatic scale. Bull. Am. Meteor. Soc., 67, 138–144.
Arritt, R.W., 1987: Effect of water surface temperature on lake breezes and thermal internal boundary layers. Bound.-Layer Meteor., 40, 101–125.
Atlas, D., B. Walter, S.-H. Chou and P.J. Sheu, 1986: The structure of the unstable marine boundary layer viewed by lidar and aircraft observations. J. Atmos. Sci., 43, 1301–1318.
Bader, D.C., T.B. Mee and G.J. Tripoli, 1987: Mesoscale boundary layer evolution over complex terrain. Part 1. Numerical simulation of the diurnal cycle. J. Atmos. Sci., 44, 2823–2838.
Ball, F.K., 1960: Control of inversion height by surface heating. Quart. J. Roy. Meteor. Soc., 86, 483–494.
Bénech, B., J. Noilhan, A. Druilhet, J.M. Brustet and C. Charpentier, 1986: Experimental study of an artificial thermal plume in the boundary layer. Part 1. Flow characteristics near the heat source. J. Clim. Appi. Meteor., 25, 418–437.
Boers, R. and E.W. Eloranta, 1986: Lidar measurements of the atmospheric entrainment zone and the potential temperature jump across the top of the mixed layer. Bound.-Layer Meteor., 34, 357–375.
Boers, R., E.W. Eloranta and R.L. Coulter, 1984: Lidar observations of mixed layer dynamics: Tests of parameterized entrainment models of mixed layer growth rate. J. Clim. Appi. Meteor., 23, 247–266.
Brown, R.A., 1970: A secondary flow model for the planetary boundary layer. J. Atmos. Sci., 27, 742–757.
Brutsaert, W., 1987: Nearly steady convection and the boundary layer budgets of water vapor and sensible heat. Bound.-Layer Meteor., 39, 283–300.
Carruthers, DJ. and C.-H. Moeng, 1987: Waves in the overlying inversion of the convective boundary layer. J. Atmos. Sci., 44, 1801–1808.
Chang, H.-R. and H.N. Shirer, 1984: Transitions in shallow convection: an explanation for lateral cell expansion. J. Atmos. Sci., 41, 2334–2346.
Clark, T.L., T. Hauf and J.P. Kuettner, 1986: Convectively forced internal gravity waves: results from two-dimensional numerical experiments. Quart. J. Roy. Meteor. Soc., 112, 899–925.
Crum, T.D. and R.B. Stull, 1987: Field measurements of the amount of surface layer air versus height in the entrainment zone. J. Atmos. Sci., 44, 2743–2753.
Crum, T.D., R.B. Stull and E.W. Eloranta, 1987: Coincident lidar and aircraft observations of entrainment into thermals and mixed layers. J. Clim. Appi. Meteor., 26, 774–788.
Deardorff, J.W., 1969: Numerical study of heat transport by internal gravity waves above a growing unstable layer. Phys. Fluids, Suppl. II, 12, 184–194.
Deardorff, J.W., 1972: Numerical investigation of neutral and unstable planetary boundary layers. J. Atmos. Sci., 29, 91–115.
Deardorff, J.W., 1974: Three-dimensional numerical study of turbulence in an entraining mixed layer. Bound-Layer. Meteor., 7, 199–226.
Deardorff, J.W., 1979: Prediction of convective mixed-layer entrainment for realistic capping inversion structure. J. Atmos. Sci., 36, 424–436.
Deardorff, J.W. and G.E. Willis, 1985: Further results from a laboratory model of the convective planetary boundary layer. Bound.-Layer Meteor., 32, 205–236.
Deardorff, J.W., G.E. Willis and D.K. Lilly, 1969: Laboratory investigation of non- steady penetrative convection. J. Fluid Mech., 35, 7–31.
Deardorff, J.W., G.E. Willis and B.H. Stockton, 1980: Laboratory studies of the entrainment zone of a convectively mixed layer. J. Fluid Mech., 100, Part 1, 41–64.
Doviak, R.J. and M. Berger, 1980: Turbulence and waves in the optically clear planetary boundary layer resolved by dual-Doppler radar. Radio Science, 15, 297–317.
Driedonks, A.G.M. and H. Tennekes, 1984: Entrainment effects in the well-mixed atmospheric boundary layer. Bound.-Layer Meteor., 30, 75–105.
Fairall, C.W., 1987: A top-down and bottom-up diffusion model of 2 and cq2 in the entraining convective boundary layer. J. Atmos. Sci., 44, 1009–1017.
Ferrare, R.A., 1984: Lidar observations of organized convection within the atmospheric mixed layer. M.S. Thesis. Dept. of Meteorology, Univ. of Wisconsin-Madison. 204pp.
Fiedler, B.H., 1984: The mesoscale stability of entrainment into cloud-topped mixed layers. J. Atmos. Sci., 41, 92–101.
Fitzjarrald, D.E., 1973: A field investigation of dust devils. J. Appl. Meteor., 12, 808–813.
Fritz, R.B. and T.-I. Wang, 1979: Chapt. 9. Optical systems measuring surface-level convergence during PHOENIX, Project PHOENIX, Report No. L (Hooke, Ed.), 57–73. Available from NOAA.ERL, Boulder, CO 80303.
Godowitch, J.M., 1986: Characteristics of vertical turbulence velocity in the urban convective boundary layer. Bound.-Layer Meteor., 35, 387–407.
Greenhut, G.K. and S.J.S. Khalsa, 1982: Updraft and downdraft events in the atmospheric boundary layer over the equatorial Pacific Ocean. J. Atmos. Sci., 39, 1803–1818.
Greenhut, G.K. and S.J.S. Khalsa, 1987: Convective elements in the marine atmospheric boundary layer. Part 1: Conditional sampling statistics. J. Clim. Appl. Meteor., 26, 813–822.
Haines, D.A., 1982: Horizontal roll vortices and crown fires. J. Clim. Appl. Meteor 21, 751–763.
Hanna, S.R., 1987: An empirical formula for the height of the coastal internal boundary layer. Bound.-Layer Meteor., 40, 205–207.
Hooper, W.P., 1982: The Diurnal Evolution of the Planetary Boundary Layer: Lidar Observations above a Flat Homogeneous Surface. M.S. Thesis, Univ. of Wisconsin — Madison. 160pp.
Hooper, W.P. and E.W. Eloranta, 1986: Lidar measurements of wind in the planetary boundary layer: the method, accuracy and results from joint measurements with radiosonde and kytoon. J. Clim. Appl. Meteor., 25, 990–1001.
Hsu, S.A., 1986: A note on estimating the height of the convective internal boundary layer near shore. Bound.-Layer Meteor., 35, 311–316.
Idso, S.B., 1975: Tornado-like dust devils. Weather, 30, 115–117.
Idso, S.B., 1975: Arizona weather watchers: past and present. Weatherwise, 28, 56–60.
Idso, S.B., 1975: Whirlwinds, density currents, and topographic disturbances: a meteorological melange of intriguing interactions. Weatherwise, 28, 61–65.
Kaimal, J.C. and J.A. Businger, 1970: Case studies of a convective plume and a dust devil. J. Appl. Meteor., 9, 612–620.
Kaimal, J.C, W.L. Eberhard, W.R. Moniger, J.E. Gaynor, S.W. Troxel, T. Uttal, G.A. Briggs, and G.E. Start, 1986: Project Condors, Convective Diffusion observed by remote sensors. NOAA/ERL, Boulder, CO 80303.
Khalsa, S.J.S. and G.K. Greenhut, 1985: Conditional sampling of updrafts and downdrafts in the marine atmospheric boundary layer. J. Atmos. Sci., 42, 2550–2562.
Khalsa, S.J.S. and G.K. Greenhut, 1987: Convective elements in the marine atmospheric boundary layer. Part 2: Entrainment at the capping inversion. J. Clim. Appl. Meteor., 26, 824–836.
Kraus, E.B., 1972: Atmosphere-Ocean Interaction. Cambridge Univ. Press., Oxford. 275pp.
Kraus, E.B. and L.D. Leslie, 1982: The interactive evolution of the oceanic and atmospheric boundary layers in the source regions of the trades. J. Atmos. Sci., 39, 2760–2772.
Kropfli, R.A., 1979: Chapt. 3. PHOENIX multiple Doppler radar operations. Project PHOENIX - Report No. 1. (Hooke, Ed.), 33–56. Available from NOAA/ERL, Boulder, CO 80303.
Kuettner, J.P., P.A. Hildebrand and T.L. Clark, 1987: Convection waves: observations of gravity wave systems over convectively active boundary layers. Quart. J. Roy. Meteor. Soc., 113, 445–468.
Lamb, R.G., 1978: A numerical simulation of dispersion from an elevated point source in the convective planetary boundary layer. Atmos. Environ., 12, 1297–1304.
Lone, M.A., 1973: The structure and dynamics of horizontal roll vortices in the planetary boundary layer. J. Atmos. Sci., 30, 1077–1091.
Lone, M.A., 1976: Modulation of turbulence energy by longitudinal rolls in an unstable planetary boundary layer. J. Atmos. Sci., 33, 1308–1320.
Lenschow, D.H., 1973: Two examples of planetary boundary layer modification over the great lakes. J. Atmos. Sci., 30, 568–581.
Lenschow, D.H. and E.M. Agee, 1986: Preliminary results from the Air Mass Transformation Experiment (AMTEX). Bull. Am. Meteor. Soc., 57, 1346–1355.
Lilly, D.K., 1968: Models of cloud-topped mixed layers under a strong inversion. J. Atmos. Sci., 30, 1092–1099.
Lyons, W.A., 1975: Turbulent diffusion and pollutant transport in shoreline environments. Lectures on Air Pollution and Environmental Impact Analysis, D.A. Haugen (Ed.), Am. Meteor. Soc. 136–208.
Mahrt, L., 1979: Penetrative convection at the top of a growing boundary layer. Quart. J. Roy. Meteor. Soc., 105, 469–485.
Mahrt, L. and J.-C. André, 1983: On the stratification of turbulent mixed layers. J. Geophys. Res., 88, 2662–2666.
Mahrt, L. and J. Paumier, 1984: Heat transport in the atmospheric boundary layer. J. Atmos. Sci., 41, 3061–3075.
Mahrt, L. and J. Paumier, 1985: Simple formulation of heat flux in the unstable atmospheric boundary layer. Bound.-Layer Meteor., 33, 61–76.
Mason, P.J. and R.I. Sykes, 1980: A 2-D numerical study of horizontal roll vortices in the neutral atmospheric boundary layer. Quart. J. Roy. Meteor, Soc., 106, 351–336.
Mason, P.J. and R.I. Sykes, 1982: A 2-D numerical study of horizontal roll vortices in an inversion-capped planetary boundary layer. Quart. J. Roy. Meteor. Soc., 108, 801–823.
Moeng, C.-H. and J.C. Wyngaard, 1984: Statistics of conservative scalars in the convective boundary layer. J. Atmos. Sci., 41, 3161–3169.
News and Notes, 1976: Dust devil wind velocities. Bull. Am. Meteor. Soc., 57, 600.
Nieuwstadt, F.T.M. and R.A. Brost, 1986: The decay of convective turbulence. J. Atmos. Sci., 43, 532–546.
Nieuwstadt, F.T.M. and H. van Dop, 1982: Atmospheric Turbulence and Air Pollution Modelling. Reidei Pubi. Co., Dordrecht. 358pp.
Noilhan, J. and B. Bénech, 1986: Experimental study of an artificial thermal plume in the boundary layer. Part 3: Dynamic structure within the plume. J. Clim. Appl. Meteor., 25, 458–467.
Noilhan, J., B. Bénech, G. Letrenne, A. Druilhet and A. Saab, 1986: Experimental study of an artificial thermal plume in the boundary layer. Part 2: Some aspects of the plume thermodynamical structure. J. Clim. Appl. Meteor., 25, 439–457.
Rabin, R.M., R.J. Doviak and A. Sundara-Rajan, 1982: Doppler radar observations of momentum flux in a cloudless convective layer with rolls. J. Atmos. Sci., 39, 851–863.
Randall, D.A., 1984: Buoyant production and consumption of turbulence kinetic energy in cloud-topped mixed layers. J. Atmos. Sci., 41, 402–413.
Ray, D., 1986: Variable eddy diffusivities and atmospheric cellular convection. Bound.- Layer Meteor., 36, 117–131.
Rayment, R. and C.J. Readings, 1974: A case study of the structure and energetics of an inversion. Quart. J. Roy. Meteor. Soc., 100, 221–223.
Reichmann, H., 1975: Cross-country Soaring (Streckensegelflug). Thompson Publications. P.O. Box 1175, Pacific Palisades, CA 90272. 150pp.
Reinking, R.F., R.J. Doviak and R.O. Gilmer, 1981: Clear-air roll vortices and turbulent motions as detected with an airborne gust probe and dual-Doppler radar. J. Appl. Meteor., 20, 678–685.
Rosmond, T.E., 1973: Mesoscale cellular convection. J. Atmos. Sci., 30, 1392–1409.
Rothermal, J. and E.M. Agee, 1980: Aircraft investigation of mesoscale cellular convection during AMTEX 75. J. Atmos. Sci., 37, 1027–1040.
Rothermel, J. and E.M. Agee, 1986: A numerical study of atmospheric convective scaling. 7. Atmos. Sci., 43, 1185–1197.
Schols, J.L.J., 1984: The detection and measurement of turbulent structures in the atmospheric surface layer. Bound.-Layer Meteor., 29, 39–58.
Schols, J.L.J., A.E. Jansen and J.G. Krom, 1985: Characteristics of turbulent structures in the unstable atmospheric surface layer. Bound.-Layer Meteor., 33, 173–196.
Schols, J.L.J, and L. Wartena, 1986: A dynamical description of turbulent structure in the near neutral atmospheric surface layer: the role of static pressure fluctuations. Bound.-Layer Meteor., 34, 1–15.
Scorer, R.S., 1957: Experiments on convection of isolated masses of buoyant fluid. J. Fluid Mech. 2, 583–594.
Sheu, P.J. and E.M. Agee, 1977: Kinematic analysis and air-sea heat flux associated with mesoscale cellular convection during AMTEX 75. J. Atmos. Sci., 34, 793–801.
Sinclair, P.C., V.H. Leverson and R.F. Abbey, Jr., 1977: The vortex structure of dust devils, water spouts, and tornadoes. 10th AMS Conference on Severe Local Storms, Oct 18–21, Omaha, NE. Amer. Meteor. Soc., Boston. 533pp.
Smolarkiewicz, P.K. and T.L. Clark, 1985: Numerical simulation of the evolution of a three-dimensional field of cumulus clouds. Part 1: Model description, comparison with observations and sensitivity studies. J. Atmos. Sci., 42, 502–522.
Stage, S.A. and J. A. Businger, 1981: A model for entrainment into a cloud-topped marine boundary layer. Parts 1 & 2. J. Atmos. Sci., 38, 2213–2242.
Stull, R.B., 1973: Inversion rise model based on penetrative convection. J. Atmos. Sci., 30, 1092–1099.
Stull, R.B., 1976a: The energetics of entrainment across a density interface. J. Atmos. Sci., 33, 1260–1267.
Stull, R.B., 1976b: Mixed layer depth model based on turbulent energetics. J. Atmos. Sci., 33, 1268–1278.
Stull, R.B., 1976c: Internal gravity waves generated by penetrative convection. J. Atmos. Sci., 33, 1279–1286.
Stull, R.B., 1985: A fair-weather cumulus cloud classification scheme for mixed-layer studies. J. Clim. Appl. Meteor., 24, 49–56.
Stull, R.B., 1988: Pollutant dispersion and mixed-layer modeling using asymmetric transilient matrices. 8th AMS Symposium on Turbulence and Diffusion. San Diego, 25–29 April 1988. Amer. Meteor. Soc., Boston. 4pp.
Stull, R.B. and A.G.M. Driedonks, 1987: Applications of the transilient turbulence parameterization to atmospheric boundary-layer simulations. Bound.-Layer Meteor., 40, 209–239.
Tennekes, H., 1973: A model for the dynamics of the inversion above a convective boundary layer. J. Atmos. Sci., 30, 558–581.
Vachalek, R.E., R.B. Stull, and E.W. Eloranta, 1988: Mean vertical velocity and divergence measurements in the boundary layer. (Submitted to J. Appl. Meteor.)
Venkatram, A., 1977: A model for internal boundary layer development. Bound.-Layer Meteor., 11, 419–437.
Weinstock, J., 1987: The turbulence field generated by a linear gravity wave. J. Atmos.Sri., 44, 410–420.
Wilczak, J.M. and J.A. Businger, 1983: Thermally indirect motions in the convective atmospheric boundary layer. J. Atmos. Sci., 40, 343–358.
Wilczak, J.M. and J.E. Tillman, 1980: The three-dimensional structure of convection in the atmospheric surface layer. J. Atmos. Sci., 37, 2424–2443.
Wilde, N.P., R.B. Stull, and E.W. Eloranta, 1985: The LCL zone and cumulus onset. J. Clim. Appl. Meteor., 24, 640–657.
Willis, G.E. and J.W. Deardorff, 1976: A laboratory model of diffusion into the convective planetary boundary layer. Quart. J. Roy. Meteor. Soc., 102, 427–445.
Willis, G.E. and J.W. Deardorff, 1978: A laboratory study of dispersion from an elevated source within a modeled convective planetary boundary layer. Atmos. Environ., 12, 1305–1311.
Willis, G.E. and J.W. Deardorff, 1981: A laboratory study of dispersion from a source in the middle of the convectively mixed layer. Atmos. Environ., 15, 109–117.
Wyngaard, J.C., 1987: A physical mechanism for the asymmetry in top-down and bottom-up diffusion. J. Atmos. Sci., 44, 1083–1087.
Wyngaard, J.C. and R.A. Brost, 1984: Top-down and bottom-up diffusion of a scalar in the convective boundary layer. J. Atmos. Sci., 41, 102–112.
Young, G.S., 1988a&b: Turbulence structure of the convective boundary layer. Parts I & II. J. Atmos. Sci., 44, (in press).
Young, G.S., 1988c: Convection in the atmospheric boundary layer. Earth Science Reviews (in press).
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Stull, R.B. (1988). Convective Mixed Layer. In: Stull, R.B. (eds) An Introduction to Boundary Layer Meteorology. Atmospheric Sciences Library, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3027-8_11
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DOI: https://doi.org/10.1007/978-94-009-3027-8_11
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