How does the Arctic Ocean freeze?

How does the Arctic 
Ocean freeze?

How does the Arctic Ocean freeze?


Arctic sea ice is one that forms on the Arctic Ocean during the winter months. Pure water, which does not contain any other molecules, substances or impurities, freezes at 0 ° C (32 ° F). On the other hand, about 3.5 percent of the world's seawater contains dissolved minerals and salts. This additional material reduces the freezing point of seawater to about −2 ° C (28.4 ° F) because the freezing point depends on the number of molecules present in a solution, as well as the type of molecule. During the winter months, when air temperatures in the Arctic begin to drop dramatically, a deep layer of seawater begins to develop minuscule ice crystals; This dirty water is called Fragile Ice. Another drop in temperature causes Friesil's ice to become thick. Pockets of salty slash accumulate until they become so heavy that they begin to sink. This leaves the top layer of icy crystals with a significantly lower salt content. The freezing point of this surface water is therefore high and the falling temperature enables the crystals to freeze in the pack ice. This pack ice becomes a huge floating sheet (composed of many small flows), whose thickness and coverage varies throughout the year, but reaches its peak in March. During the hot summer months, meanwhile, the snow retreats and breaks, reaching its lowest extent around September.

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