258
50
45
40
b
Theory of the Ventilated Thermocline
Ekman pumping velocity ( I.E-4 cm/sec),olf•.25,k•.30
0
.·
·.
.·
·.
-60
-60
-50
-40
Longitude
sverdrup streomfunction
-50
-40
Longitude
•. -2 ....... .
........
-.30
-20
-.30
-20
Fig. 4.11.4a-d. Fields used by Huang (1989b) to calculate the thermocline flow in a model of the
North Atlantic. a Distribution of Ekman pumping. The zero line of W£ slopes southwest to
northeast and is taken as the intergyre boundary. Solid contours represent downward pumping.