Demonstrate how the ocean's thermal inertia is greater than the land's thermal inertia. What will be an ideal response?


Water temperature rises as the sun’s energy is absorbed and changed to heat, but water has a
very high heat capacity, so its temperature will not rise very much even if a large quantity of
heat is added. This tendency of a substance to resist a change in temperature with the gain or loss of heat energy is called thermal inertia. An example of the ocean's thermal inertia
compared to land's thermal inertia is two cities in the U.S.: San Francisco, California, and
Norfolk, Virginia. These two cities are on the same line of latitude, each is the same distance
from the equator, yet San Francisco is warmer in the winter and cooler in the summer than
Norfolk. Wind tends to flow from west to east at this latitude. Thus, air in San Francisco has
moved over the ocean while air in Norfolk has approached over land. Water doesn’t warm as
much as land in the summer, nor cool as much in winter - a demonstration of thermal inertia

Environmental & Atmospheric Sciences

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