Chapter 11 Conceptual Models of the Wind-Driven and Thermohaline Circulation
Chapter in Ocean Circulation and Climate - A 21st Century Perspective, Elsevier 103 (2013) 257-282
Eddy Saturation of Equilibrated Circumpolar Currents
Journal of Physical Oceanography American Meteorological Society 43 (2013) 507-532
Abstract:
We use a sector con guration of an ocean general circulation model to examine the sensitivity of circumpolar transport and meridional overturning to changes in Southern Ocean wind stress and global diapycnal mixing. We nd that at eddy-permitting, and ner, resolution the sensitivity of circumpolar transport to forcing magnitude is drastically reduced. At su ciently high resolution, there is little or no sensitivity to wind stress, even in the limit of no wind. In contrast, the meridional overturning circulation continues to vary with Southern Ocean wind stress, but with reduced sensitivity in the limit of high wind stress. We nd that both the circumpolar transport and meridional overturning continue to vary with diapycnal di usivity at all model resolutions. The circumpolar transport becomes less sensitive to changes in diapycnal di usivity at higher resolution, although sensitivity always remains. In contrast, the overturning circulation is more sensitive to change in diapycnal di usivity when the resolution is high enough to permit mesoscale eddies. These models cast doubt upon the validity of climate projections obtained using non-eddy-resolving ocean models.Propagation of Meridional Circulation Anomalies along Western and Eastern Boundaries
JOURNAL OF PHYSICAL OCEANOGRAPHY 43:12 (2013) 2699-2717
Vertical Eddy Energy Fluxes in the North Atlantic Subtropical and Subpolar Gyres
JOURNAL OF PHYSICAL OCEANOGRAPHY 43:1 (2013) 95-103
A Framework for Parameterizing Eddy Potential Vorticity Fluxes
JOURNAL OF PHYSICAL OCEANOGRAPHY 42:4 (2012) 539-557