Ocean Circulation - Water Types and Water Masses

180°
E 30°60°90° E E 120°150°150°120° W W 90°60°30°0°30° E
Ice
ASUW
60°
40°
20°
N
0°
S
20°
40°
60°
ASW
Arab. Sea
Water
IEW
Indian Equatorial Wat.
S. Indian Centr. Water
Bengal
Bay
Wat.
Indo. Upper Wat.
SICW
BBW
Subantarctic Surface Water
Antarctic Surface Water
IUW
WNPCW
West. N. Pacific
Centr. Water
PEW
P S U W
Pac. Subarctic Upper Wa
West. S. Pacific
Centr. Water
WSPCW
E 30°60°90°120°150° E E 150°180°150°120°90°60° W W 60°30°0°30° E
t.
ENPCW
East. N. Pacific
Centr. Water
Pacific Equatorial Water
ESPCW
Subantarctic Surface Water
Antarctic Surface Water
East. N. Pacific
Transition Water
East. S. Pacific
Centr. Water
East. S. Pacific
Transition Wat.
Upper Waters
(0−500m)
WNACW
West. N. Atl.
Centr. Water
ENACW
East. N. Atl
SACW
.
Centr. Wat.
South Atlantic
Centr. Water
Subantarctic Surface Water
Antarctic Surface Wat.
Figure 3 Global distribution of upper waters (0–500 m). Water masses are in abbreviated form with their boundaries indicated by solid lines. Formation regions for these water masses are
marked by cross-hatching and labelled with the corresponding acronym title.
A
tl.
U pper
Wat.
Subarctic
60°
40°
20°
N
0°
S
20°
40°
60°
OCEAN CIRCULATION / Water Types and Water Masses 1561