On low-frequency variability of the midlatitude ocean gyres
On low-frequency variability of the midlatitude ocean gyres
复制标题
中纬度海洋环流的低频变化
DOI:
10.1017/jfm.2016.208
复制
发表时间:
2016
影响因子:
3.7
通讯作者:
Shevchenko I
中科院分区:
文献类型:
--
作者:
Shevchenko I
This paper studies the large-scale low-frequency variability of the wind-driven midlatitude ocean gyres and their western boundary currents, such as the Gulf Stream or Kuroshio, simulated with the eddy-resolving quasi-geostrophic model. We applied empirical orthogonal functions analysis to turbulent flow solutions and statistically extracted robust and significant large-scale decadal variability modes concentrated around the eastward jet extension of the western boundary currents. In order to interpret these statistical modes dynamically, we linearized the governing quasi-geostrophic equations around the time-mean circulation and solved for the corresponding full set of linear eigenmodes with their eigenfrequencies. We then projected the extracted decadal variability on the eigenmodes and found that this variability is a multimodal coherent pattern phenomenon rather than a single mode or a combination of several modes as in the flow regimes preceding developed turbulence.
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
S. Kravtsov;P. Berloff;W. Dewar;M. Ghil;J. McWilliams
通讯作者:
J. McWilliams
影响因子:
3.2
作者:
Shevchenko I
通讯作者:
Shevchenko I
影响因子:
3.5
作者:
P. Berloff;W. Dewar;S. Kravtsov;J. McWilliams
通讯作者:
J. McWilliams