Are “Great Salinity Anomalies” Advective?

NOTES AND CORRESPONDENCE Impact of Great Salinity Anomalies on the Low-Frequency Variability of the North Atlantic Climate

In this paper, it is shown that coherent large-scale low-frequency variabilities in the North Atlantic Ocean—that is, the variations of thermohaline circulation, deep western boundary current, northern recirculation gyre, and Gulf Stream path—are associated with high-latitude oceanic Great Salinity Anomaly events. In particular, a dipolar sea surface temperature anomaly (warming off the U.S. ea...

Causes and Consequences of the Late 1960s Great Salinity Anomaly

The second half of the 20th century showed a series of decadal-scale anomalies of salinity, temperature and sea ice cover in the northern North Atlantic. One pronounced event, the 'great salinity anomaly' (GSA) is observed in the late 1060s and the early 1970s (Dickson et al., 1988). This anomaly can be linked to the sea ice volume out of the Arctic through Fram Strait, which represents a major...

Roles Are Really Great!

Roles Are Really Great!

We present a new role system for specifying changing referencing relationships of heap objects. The role of an object depends, in large part, on its aliasing relationships with other objects, with the role of each object changing as its aliasing relationships change. Roles therefore capture important object and data structure properties and provide useful information about how the actions of th...

Advective Disks

Recent work on advection-dominated accretion flows (ADAFs) is reviewed. The article concentrates on an optically thin branch of ADAFs which is present at mass accretion rates below a critical value ∼ (10 −2 − 10 −1) the Eddington rate. Models based on this branch have been quite successful at explaining a number of low-luminosity X-ray bi-naries and galactic nuclei, and some brighter systems. S...