Summary
Numerical investigation of the nature of one of the most typical Eastern Mediterranean atmospheric circulation phenomena — the Red Sea Trough is undertaken. The role of interaction of typical atmospheric flow systems with the local topography of the North African region is analyzed with the help of idealized numerical simulations employing the Penn State and the National Center for Atmospheric Research (NCAR) MM4 modeling system. The simulations are designed, based on results of a climatological evaluation of the 250 hPa wind field. Idealized initial data sets corresponding to typical transient and winter period positions of the upper tropospheric westerly jet stream are constructed. The data for the analysis are from the National Center for Environmental Prediction (NCEP) 25 y (1965–1989) objective analysis archive. It was found that the primary factor in the Red Sea trough generation is the interaction of the mid-tropospheric westerlies with the terrain in the area of the Red Sea.
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Alpert, P., Neeman, B., Shay-El, Y. 1990a: Climatological analysis of Mediterranean Cyclones using ECMWF data,Tellus,42A, 65–77.
Alpert, P., Neeman B., Shay-El, Y., 1990b: Intermonthly variability of Cyclone tracks in the Mediterranean.J. Clim.,3, 1474–1478.
Alpert, P., Tsidulko, M., Stein, U., 1995a: Can sensitivity studies yield absolute comparisons for the effects of several processes?J. Atmos.,52, 597–601.
Alpert, P., Stein, U., Tsidulko, M., 1995b: Role of sea fluxes and topography in eastern Mediterranean cyclogenesis.The Global Atmosphere and Ocean Systems,3, 55–79.
Anthes, R. A., Warner, T. T., 1978: Development of hydro-dynamical models suitable for air pollution and mesometeorological studies.Mon. Wea. Rev.,106, 1045–1078.
Dayan, U., Abramsky, R., 1983: Heavy rain in the Middle East related to unusual jet stream properties.Bull. Amer. Meteor. Soc.,64 (10), 1133–1140.
Dayan, U., 1986: Climatology of back trajectories from Israel.J. Climate Appl. Meteor.,25, 591–595.
Krichak, S. O., Alpert, P., 1994a: Effects of winter monsoon variability in the eastern Mediterranean, International WMO Conference on Monsoon Variability and Prediction, Trieste, Italy, WMO/TD-619, pp. 215–222.
Krichak, S. O., Alpert, P., 1994b: Experiments in weather prediction over the Mediterranean with the Penn State/ NCAR Limited Area (MM4) model, WMO-TD-592. pp. 5.10–5.11.
Krishnamurti, T. N., 1961: The subtropical jet stream of winter.J. Meteorol.,18, 172–191.
Krishnamurti, T. N., Kanamitsu, M., Koss, W., Lee, J. D., 1973: Tropical east-west circulation during the Northern winter.J. Atmos. Sci.,30, 780–787.
Lapenta, W. M., Seaman, N. E., 1990: A numerical investigation of east coast cyclogenesis during the cold-air damming event of 27–28 February 1982. Part II: Dynamic and thermodynamic structure.Mon. Wea. Rev.,118, 2668–2695.
Lapenta, W. M., Seaman, N. E., 1992: A numerical investigation of east coast cyclogenesis during the cold-air damming event of 27–28 February 1982. Part II: Importance of physical mechanisms.Mon. Wea. Rev.,120, 52–76.
Mass, C. F., Edman, H. J., Friedman, H. J., Cheney, N. R., Recker, E. E., 1987: The use of compact disks for the storage of large meteorological and oceanographic data sets.Bull. Amer: Meteor. Soc.,68, 1556–1558.
Reiter, E. R., 1975: Handbook for Forecasters in the Mediterranean.Tech. Pap. 5-75, 344 p. Nav. Postgrad. Sch., Monterey, Ca.
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Krichak, S.O., Alpert, P. & Krishnamurti, T.N. Interaction of topography and tropospheric flow — A possible generator for the Red Sea Trough?. Meteorl. Atmos. Phys. 63, 149–158 (1997). https://doi.org/10.1007/BF01027381
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DOI: https://doi.org/10.1007/BF01027381