A series of zonal jets embedded in the broad zonal flows in the pacific obtained in eddy-permitting ocean general circulation models

被引:92
|
作者
Nakano, H [1 ]
Hasumi, H [1 ]
机构
[1] Univ Tokyo, Ctr Climate Syst Res, Tokyo, Japan
关键词
D O I
10.1175/JPO2698.1
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
A series of zonal currents in the Pacific Ocean is investigated using eddy-permitting ocean general circulation models. The zonal currents in the subsurface are classified into two parts: one is a series of broad zonal flows that has the meridional pattern slanting poleward with increasing depth and the other is finescale zonal jets with the meridional scale of 3 degrees-5 degrees formed in each broad zonal flow. The basic pattern for the broad zonal flows is similar between the coarse-resolution model and the eddy-permitting model and is thought to be the response to the wind forcing. A part of the zonal jets embedded in each zonal flow is explained by the anomalous local wind forcing. Most of them, however, seem to be mainly created by the rectification of turbulent processes on a beta plane (the Rhines effect), and zonal jets in this study have common features with the zonally elongated flows obtained in previous modeling studies conducted in idealized basins. The position of zonal jets is not stable when the ocean floor is flat, whereas it oscillates only within a few degrees under realistic bottom topography.
引用
收藏
页码:474 / 488
页数:15
相关论文
共 6 条
  • [1] Increased wintertime European atmospheric blocking frequencies in General Circulation Models with an eddy-permitting ocean
    Michel, Simon L. L.
    von der Heydt, Anna S.
    van Westen, Rene M.
    Baatsen, Michiel L. J.
    Dijkstra, Henk A.
    [J]. NPJ CLIMATE AND ATMOSPHERIC SCIENCE, 2023, 6 (01)
  • [2] Increased wintertime European atmospheric blocking frequencies in General Circulation Models with an eddy-permitting ocean
    Simon L. L. Michel
    Anna S. von der Heydt
    René M. van Westen
    Michiel L. J. Baatsen
    Henk A. Dijkstra
    [J]. npj Climate and Atmospheric Science, 6
  • [3] On the statistics of the zonal jets in the eastern equatorial Pacific and eastern North Pacific in an ensemble of eddy-resolving ocean general circulation model runs
    Furue, Ryo
    Nonaka, Masami
    Sasaki, Hideharu
    [J]. OCEAN MODELLING, 2021, 159 (159)
  • [4] Recent changes in the North Atlantic circulation simulated with eddy-permitting and eddy-resolving ocean models
    Marsh, Robert
    de Cuevas, Beverly A.
    Coward, Andrew C.
    Jacquin, Julien
    Hirschi, Joel J. -M.
    Aksenov, Yevgeny
    Nurser, A. J. George
    Josey, Simon A.
    [J]. OCEAN MODELLING, 2009, 28 (04) : 226 - 239
  • [5] The zonal momentum balance in an eddy-resolving general-circulation model of the Southern Ocean
    Stevens, DP
    Ivchenko, VO
    [J]. QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1997, 123 (540) : 929 - 951
  • [6] Comparison of two time-variant forced eddy-permitting global ocean circulation models with hydrography of the Scotia Sea
    Thorpe, SE
    Stevens, DP
    Heywood, KJ
    [J]. OCEAN MODELLING, 2005, 9 (02) : 105 - 132