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"A major driving mechanism of the MOC is the sinking of water in the

North Atlantic Ocean. This begins with the formation of ______. As ocean water freezes, ice crystals exclude salt and the salinity of the surrounding water increases.
a.Antarctic Bottom Water
b.Antarctic Intermediate Water
c.North Atlantic Deep Water
d.Meditteranean Intermediate Water


12.Refer to Figure 5B-4. NADW has a temperature between 2°C and 4°C and a salinity between 34.9 and 35.0. Mediterranean Intermediate Water has a similar density as NADW. It has a temperature and salinity of ______.
a.4°C and 34.0
b.5°C and 35.5
c.10°C and 36.0


13.This dense NADW originating in the North Atlantic sinks to about 3000m and flows southward. Figure 5B-6 from the NOAA World Ocean Atlas 2018 depicts annual mean temperatures at an ocean depth of 3000 m (9800 ft.). It shows the water with temperatures ranging between 2.25°C and 2.75°C pooled at that depth in the Atlantic extending southward as far as about ______°S latitude.
a.20
b.40
c.60"




Figure 5B-4 = https://www.ametsoc.org/amsedu/ds-ocean/oos_images/InvManImgs2021/Fig05B-4.jpg


Figure 5B - 6 = https://www.ametsoc.org/amsedu/ds-ocean/oos_images/InvManImgs2021/Fig05B-6.jpg

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