Abstract
It has been long known by Australian meteorologists that a nocturnal jet is a frequent feature of the low-level wind profile at Daly Waters in the Northern Territory of Australia. The Koorin Expedition during the southern winter of 1974 obtained data on wind and temperature profiles in the boundary layer which form an ideal base for the study of this phenomenon. In this paper, a simple model of the jet is described and the results of the model are compared with observations. The model is essentially a development of the pioneering work of Blackadar, who proposed that a low-level jet could develop as an inertial oscillation. The observations do show some of the features of the model.
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References
Allen, S. C.: 1980, ‘Observational Characteristics of the Low-Level Jet at Daly Waters During Project Koorin’, Australian Meteorol. Mag. 28, 47–56.
Allen, S. C.: 1981, ‘Australian Low-Level Jet Climatology’, Meteorological Note, 119, Bureau of Meteorology, Melbourne, 23 pp.
Anderson, D. L. T.: 1976, ‘The Low-Level Jet as a Western Boundary Current’, Mon. Weather Rev. 104, 907–921.
Berry, F. A., Bollay, E., and Beers, N. R.: 1945, ‘Handbook of Meteorology’, McGraw-Hill, New York, 1068 pp.
Blackadar, A. K.: 1955, ‘The Low-Level Jet Phenomenon’, Institute of Aeronautical Sciences Preprint 519.
Blackadar, A. K.: 1957, ‘Boundary Layer Wind Maxima and Their Significance for the Growth of Nocturnal Inversions’, Bull. Amer. Meteorol. Soc. 38, 283–290.
Blackadar, A. K.: 1962, ‘The Vertical Distribution of Wind and Turbulent Exchange in a Neutral Atmosphere’, J. Geophys. Res. 67, 3095–3102.
Bonner, W. D.: 1968, ‘Climatology of the Low-Level Jet’, Mon. Weather Rev. 96, 83–850.
Bonner, W. D. and Winninghoff, F.: 1969, ‘Satellite Studies of Clouds and Cloud Bands near the Low-Level Jet’, Mon. Weather Rev. 97, 490–500.
Buajitti, K. and Blackadar, A. K.: 1957, ‘Theoretical Studies of Diurnal Wind-Structure Variations in the Planetary Boundary Layer’, Quart. J. Royal Meteorol. Soc. 83, 486–500.
Cadet, D. and Desbois, M.: 1979, ‘Low Level Air Flow over the Western Indian Ocean as Seen by METEOSAT’, Nature 278, 538–539.
Clarke, R. H.: 1974, ‘Attempts to Simulate the Diurnal Course of Meteorological Variables in the Boundary Layer’, Izvestia, Atmospheric and Oceanic Physics 10, 600–612.
Clarke, R. H.: 1983, ‘Fair Weather Nocturnal Inland Wind Surges and Atmospheric Bores: Part 1 Nocturnal Wind Surges’, Australian Meteorol. Mag. 31, 133–145.
Clarke, R. H. and Brook, R. R.: 1979, ‘The Koorin Expedition’, Australian Government Publishing Service, Canberra 359 pp.
Estoque, M. A.: 1973, ‘Numerical Modelling of the Planetary Boundary Layer’, in D. A. Haugen (ed.), Workshop on Micrometeorology, Amer. Meteorol. Soc., Boston, 217–270.
Findlater, J.: 1977, ‘Observational Aspects of the Low-Level Cross-Equatorial Jet Stream of the Western Indian Ocean’, Pageoph 115, 1251–1281.
Freytag, C.: 1978, ‘Untersuchungen zur Strubtur des Low-Level Jet’, Meteorol Rdsch. 31, 16–24.
Garratt, J. R.: 1979, ‘Turbulent Flux Measurement’, in Clarke and Brook (eds.), The Koorin Expedition, Australian Government Publishing Service, Canberra, pp. 55–60.
Hart, J. E., Rao, G. V., Van de Boogaard, H., Young, J. A., and Findlater, J.: 1978, ‘Aerial Observations of the East African Low-Level Jet Stream’, Mon. Weather Rev. 106, 1714–1724.
Holton, J. R.: 1967, ‘The Diurnal Boundary Layer Wind Oscillation Above Sloping Terrain’, Tellus 19, 199–205.
Lettau, H. H.: 1967, ‘Small to Large Scale Features of Boundary Layer Structure over Mountain Slopes’, Proceedings of a Symposium on Mountain Meteorology, Colorado State University, For Collins, Part 2, 1–74.
Lettau, H. H.: 1983, ‘Thoughts on Priorities in Boundary-Layer Research’, Boundary-Layer Meteorol. 25, 429–432.
Malcher, J. and Kraus, H.: 1983, ‘Low-Level Jet Phenomena Described by an Integrated Dynamical PBL Model’, Boundary-Layer Meteorol. 27, 327–343.
McNider, R. T. and Pielke, R. J.: 1978, ‘Diurnal Boundary-Layer Development Over Sloping Terrain’, J. Atm. Sci. 38, 2198–2212.
National Physics Laboratory: 1961, ‘Modern Computing Methods’, HMSO London, 170 pp.
Peterson, R. E.: 1974, ‘A Model of the Low-Level Jet with Variable Eddy Viscosity’, Tellus 26, 560–564.
Prandtl, L.: 1932, ‘Meteorlogische Anwendung der Stromungslehre’, Beitr. Phys. Atmos. 188.
Raymond, D. J.: 1978, ‘Instability of the Low-Level Jet and Severe Storm Formation’, J. Atm. Sci. 35, 2274–2280.
Shirvaibar, V. V.: 1975, ‘Generation of very high Supergeostrophic Winds Using a new Form of Oscillating Eddy Viscosity Profile in a Barotropic Planetary Boundary Layer’, Indian J. Met. Hydrol. Geophys. 26, 334–344.
Sladkovic, R. and Kanter, H. J.: 1977, ‘Low-Level Jet in the Bavarian Pre-Alpine Region’, Arch. Met. Geoph. Biokl., Ser. A, 25, 343–355.
Snitkovskii, A. I.: 1974, ‘An Occurrence of a Low-Level Jet Stream and Wind Intensification at the Surface’, Trudy 149, 115–120.
Tsverava, V. G.: 1967, ‘Jet Streams in the Boundary Layer of the Atmosphere’, Met. 2 gidrol 10, 71–75.
Uccellini, L. W. and Johnson, D. R.: 1979, ‘The Coupling of Upper and Lower Tropospheric Jet Streams and Implications for the Development of Severe Convective Storms’, Mon. Weather Rev. 107, 682–703.
Ushijima, T.: 1968, ‘Analytic Study of the Low-Level Jet Stream’, J. Meteorol. Soc. Japan 47, 13–22.
Wexler, H.: 1961, ‘A Boundary Layer Interpretation of the Low-Level Jet’, Tellus 13, 368–378.
Wilson, K. J. and Gibson, T. T.: 1982, ‘Vertical Time Cross Sections’, Technical Report 51, Bureau of Meteorology, Melbourne, 29–40.
Wipperman, F.: 1973, ‘Numerical Study of the Effects Controlling the Low-Level Jet’, Beitrage zur Physik der Atmosphere 46, 137–154.
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Brook, R.R. The Koorin nocturnal low-level jet. Boundary-Layer Meteorol 32, 133–154 (1985). https://doi.org/10.1007/BF00120932
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DOI: https://doi.org/10.1007/BF00120932