caa a22 4500 445302267 CHVBK 20180317142601.0 cr unu---uuuuu 170323e20101201xx s 000 0 eng 10.1134/S0001433810060058 doi (NATIONALLICENCE)springer-10.1134/S0001433810060058 Glazunov A. Institute of Numerical Mathematics, Russian Academy of Sciences, ul. Gubkina 8, 119991, Moscow, Russia aut On the effect that the direction of geostrophic wind has on turbulence and quasiordered large-scale structures in the atmospheric boundary layer [Elektronische Daten] [A. Glazunov] The dependence that the structure and intensity of turbulent and large-scale quasiordered eddies in the atmospheric boundary layer (ABL) have on the direction of geostrophic wind has been studied on the basis of a series of numerical experiments with a three-dimensional nonstationary model of high spatial resolution. The presence of the meridional component of the angular velocity of the Earth's rotation results in a significant intensification of velocity fluctuations in a neutrally stratified turbulent flow during the easterly and northeasterly winds and in their decay during the westerly and southwesterly winds. This, in turn, results in significant variations in the mean velocity profile. It is shown that these variations are associated with the largest scale fluctuations and are comparable (in scale) to the depth of Ekman's turbulent layer. It is found that, in the neutrally stratified ABL bounded in height and under stable stratification inside the ABL, the wind-direction dependence significantly decreases. The possibilities of parameterizing these effects in locally one-dimensional ABL models are discussed. Pleiades Publishing, Ltd., 2010 atmospheric boundary layer nationallicence turbulence nationallicence Coriolis force nationallicence large-eddy simulation (LES) nationallicence Izvestiya, Atmospheric and Oceanic Physics SP MAIK Nauka/Interperiodica 46/6(2010-12-01), 727-747 0001-4338 46:6<727 2010 46 11485 https://doi.org/10.1134/S0001433810060058 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0001433810060058 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Glazunov A. Institute of Numerical Mathematics, Russian Academy of Sciences, ul. Gubkina 8, 119991, Moscow, Russia aut NATIONALLICENCE 773 0- Izvestiya, Atmospheric and Oceanic Physics SP MAIK Nauka/Interperiodica 46/6(2010-12-01), 727-747 0001-4338 46:6<727 2010 46 11485 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer