A large body of evidence identifies the Atlantic Meridional Overturning Circulation (AMOC) as an important driver of changes in climate. Changes in the AMOC have been implicated in climate events that occurred many thousands of years ago [1], and others that occurred much more recently, such as in the mid-1990s [2]. Continuous monitoring of the AMOC has only been possible since 2004 [3]. Measur...

Introduction Conclusions References

A simple model is developed of the lower limb of the meridional overturning circulation in the Southern Ocean based on residual-mean theory. It is hypothesized that the strength of the lower-limb overturning ( ) is strongly controlled by the magnitude of abyssal diapycnal mixing ( ) and that of mesoscale eddy transfer (K ). In particular, it is argued that K. The scaling and associated theory f...

This study explores how buoyancy-driven modulations in the abyssal overturning circulation affect Southern Ocean temperature and salinity in an eddy-permitting ocean model. Consistent with previous studies, the modeled surface ocean south of 508S cools and freshens in response to enhanced surface freshwater fluxes. Paradoxically, upper-ocean cooling also occurs for small increases in the surfac...

Despite numerous investigations, the dynamical origins of the Medieval Climate Anomaly and the Little Ice Age remain uncertain. A major unresolved issue relating to internal climate dynamics is the mode and tempo of Atlantic meridional overturning circulation variability, and the significance of decadal-to-centennial scale changes in Atlantic meridional overturning circulation strength in regul...

An essential element of modern ocean circulation and climate is the Atlantic meridional overturning circulation (AMOC), which includes deep-water formation in the subarctic North Atlantic. However, a comparable overturning circulation is absent in the Pacific, the world's largest ocean, where relatively fresh surface waters inhibit North Pacific deep convection. We present complementary measure...

It has been suggested that freshwater transports by the Atlantic Meridional Overturning Circulation (AMOC) in South may be a useful metric for determining stability of AMOC because it can lead to feedbacks onto North salinities and hence deep water formation. In this manuscript we investigate between Freshwater transports, content transport contributions across different latitudes, at timescale...

Pacific Ocean oceanic heat transport is studied in an ocean model coupled to an atmospheric mixed-layer model. The shallow meridional overturning circulation cells in the Tropics and subtropics transport heat away from the equator. The heat transport by the horizontal gyre circulation in the Tropics is smaller and directed toward the equator. The response of the Pacific oceanic heat transport t...

BACKGROUND AND AIMS The Finite Element Method (FEM) has been used in recent years to simulate overturning processes in trees. This study aimed at using FEM to determine the role of individual roots in tree anchorage with regard to different rooting patterns, and to estimate stress distribution in the soil and roots during overturning. METHODS The FEM was used to carry out 2-D simulations of t...

Four versions of the same global climate model, with horizontal resolution ranging from 1.88 3 3.68 to 0.28 3 0.48, are employed to evaluate the resolution dependence of the Southern Ocean meridional overturning circulation. At coarse resolutions North Atlantic Deep Water tends to upwell diabatically at low latitudes, so that the Southern Ocean is weakly coupled with the rest of the ocean. As r...