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A: Structure of the North Atlantic basins is defined by bathymetric contours (2,000, 3,000, and 4,000 meters) progressively shaded gray. The Mid-Atlantic Ridge separates the western and eastern basins. The dominant currents at mid depths (near 1,500 meters) are approximated by the pink lines (bringing relatively warm water northward) and the blue lines (transporting cold waters southward).
B: Thickness in meters of the density layer corresponding to the Labrador Sea Water (LSW).
C: Temperature, in degrees centigrade, of a density surface in the middle of the LSW layer. These maps highlight the geographical distribution of the Labrador Sea Water and the Mediterranean Outflow water masses that mix to produce Upper North Atlantic Deep Water.
D: Temperature profiles from the Labrador Basin and the Mediterranean Outflow region (locations are shown by x in panel A). Green shading denotes the density layer that is mapped in panel B for each profile.[back]
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