Based on McFarlane抯 parameterization scheme of gravity wave drag, a refined gravity-wave-drag scheme is presented. Both the drag effect of the momentum flux and the dissipation effect of gravity wave breaking on the ...Based on McFarlane抯 parameterization scheme of gravity wave drag, a refined gravity-wave-drag scheme is presented. Both the drag effect of the momentum flux and the dissipation effect of gravity wave breaking on the mean zonal flow are included in the refined parameterization scheme. The dissipation effect can be formulated with the gravity wave numbers and the mean quantities. The refined parameterization scheme may represent a complete drag effect of stationary gravity wave breaking on the mean zonal flow.展开更多
McFarline's gravity drag theory is simply reviewed,and it is indicated that the fault of McFarline's theory is that the effect of dissipation induced by gravity wave breaking on mean flow is not fully consider...McFarline's gravity drag theory is simply reviewed,and it is indicated that the fault of McFarline's theory is that the effect of dissipation induced by gravity wave breaking on mean flow is not fully considered.Based on McFarline's theory,in this paper,the effect mentioned above is well considered.A new dissipation coefficient D is calculated,and a relatively complete parameterized scheme of the influence of gravity wave breaking on meanflow is put forward here. This is a better parameterized scheme than McFarline's if it is used in GCM.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.40175017)the Innovation Key Projects of the Chinese Academy of Sciences(Grant No.KZCX3-SW-213).
文摘Based on McFarlane抯 parameterization scheme of gravity wave drag, a refined gravity-wave-drag scheme is presented. Both the drag effect of the momentum flux and the dissipation effect of gravity wave breaking on the mean zonal flow are included in the refined parameterization scheme. The dissipation effect can be formulated with the gravity wave numbers and the mean quantities. The refined parameterization scheme may represent a complete drag effect of stationary gravity wave breaking on the mean zonal flow.
基金This work was supported by the National Natural Science Foundation of China under Grant No.49675257
文摘McFarline's gravity drag theory is simply reviewed,and it is indicated that the fault of McFarline's theory is that the effect of dissipation induced by gravity wave breaking on mean flow is not fully considered.Based on McFarline's theory,in this paper,the effect mentioned above is well considered.A new dissipation coefficient D is calculated,and a relatively complete parameterized scheme of the influence of gravity wave breaking on meanflow is put forward here. This is a better parameterized scheme than McFarline's if it is used in GCM.