How do oceans affect climate
The big bathtub
The Oceans are able to store enormous amounts of heat because of their high
heat capacity.
In fact, a 3.2 meter (10.5 feet) layer of ocean water has the ability to hold
as much heat as the entire atmosphere!
The oceans have a high thermal "inertia" - this means that they are resistant to
changes in temperature. It takes four times as much energy to heat water by
1 degree C than it does to heat air.
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The image to the right shows Average sea surface temperatures for August from
1971 to 2000. Both the Pacific and the Atlantic Oceans have "warm pools," or
regions of very warm water (28 C is about 82 F). The Indian Ocean is also very
warm. In these regions, the warm ocean water heats the air, leading to
convection and storms.
The warm waters encourage
hurricane
and
typhoon
growth, as well as the
monsoon
season in India. The Kurishio and Gulf Stream currents push relatively warm
water northward in the western Pacific and Atlantic. On the eastern sides of
these oceans, you can see the effects of
upwelling
cold water.
Next page
->
ocean circulation
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