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Chapter 3: Q23DQ (page 574)

In coastal regions in the winter, the temperature over the land is generally colder than the temperature over the nearby ocean; in the summer, the reverse is usually true. Explain.

Short Answer

Expert verified

With its smaller specific heat capacity, the land has a greater temperature change for the same heat flow, as compared to oceans.

Step by step solution

01

Heat circulation between land and ocean

During the daytime, heat is transferred from the Sun to both land and the ocean. Since the mass of the water in the ocean is much greater than the mass of the land and water has greater heat capacity than soil, the temperature change of the ocean will be smaller than the temperature change of the soil on the land. Thus lands are cooler in winter as compared to oceans. On the other hand, in the summer season, lands get easily heated up but water, due to high specific heat, heats up much more slowly as compared to land. Hence it appears cooler.

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