Deep Water forms in the North Atlantic because winter storms make surface waters more saline

Question

BlackTom AI · Accepted Answer

This statement concerns the process behind North Atlantic deep water formation. 
Option analysis: 
Option 1: True. The claim is that deep water forms in the North Atlantic because winter storms make surface waters more saline. This is not accurate. While deep water formation does occur in the North Atlantic, it is driven primarily by cooling of surface waters and, crucially, by increased salinity from processes such as evaporation and brine rejection during sea ice formation, not by winter storms themselves. Winter storms can mix surface waters and influence wind-driven circulation, but they do not inherently increase salinity in a way that drives deep water formation. 
Option 2: False. This correctly identifies that the key driver is the combination of cooling and higher salinity (mainly from evaporation and brine rejection), not a direct salinity increase caused by winter storms. The storms may affect mixing and ocean overturn, but they are not the primary cause of the high-density waters needed for deep convection in that region. 
In sum, the statement misattributes the cause of deep water formation to winter-storm–driven salinity increases, whereas the dominant mechanism involves cooling and salinity changes from evaporation/brine rejection, leading to higher density and sinking.

CLMTGR5001_002_2025_3 - Dynamics of Climate Variability and Chan Midterm Group A (Secure Browser)

Deep Water forms in the North Atlantic because winter storms make surface waters more saline

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类似问题

The thermohaline circulation transports heat from one hemisphere to another. In which direction does this energy flow?

The thermohaline circulation transports heat further north than the wind-driven circulation.

The thermohaline circulation transports heat in the same direction as the wind-driven circulation in the Northern Hemisphere.

The thermohaline circulation is the largest ocean current by ocean heat transport.

The thermohaline circulation transports heat in the same direction as the wind-driven circulation in the Southern Hemisphere.

By what process does North Atlantic Central Surface Water become North Atlantic Deep Water?

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