Relationship between specific heat capacity of water and the sea breeze
Question:
The amount of heat required to increase the temperature of a substance by 1 degree Celsius is quantified as heat capacity, and this value determines how well a substance retains the heat.
Water has a relatively high heat capacity at 4.18 J/g*C, which means it takes more heat to warm a gram of water. This is why, throughout the course of a warm summer day, the water temperature in the ocean does not experience a significant change. And phenomena like land and sea breeze, dust storm, monsoon are possibly due to high specific heat capacity of water. How does specific heat capacity of water affect land and sea breeze?

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Wind flows from the sea towards the land both day and night.
Wind flows from the land towards the sea both day and night.
Duringthe day, wind flows from the land towards the sea; at night, the direction is opposite.
During the day, wind flows from the sea towards the land; at night, the direction is opposite.

Because land has a much lower specific heat capacity, solar radiation heats the land more quickly than the water during the day. Thus air above the land has a higher temperature than air above the sea. Differences in air pressure is created as the hot air expands and rises up. The cold air from the sea starts blowing towards the land, giving rise to the sea breeze.

At night, both the water and the land lose heat, but the land loses heat more quickly than water because of its low specific heat capacity. Therefore, the warm air above the sea expands and rises up. Cold air from the land blows towards the sea to make up for the fall in pressure.    


For more details, please refer this animation: http://www.classzone.com/books/earth_science/terc/content/visualizations/es1903/es1903page01.cfm?cha



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History of edits
Edited BY: Yu Liang Edit Date: 2016-08-21 11:56:23
Edited BY: Yu Liang Edit Date: 2016-08-21 11:55:26
Edited BY: Yu Liang Edit Date: 2016-08-21 11:54:02
Edited BY: Yu Liang Edit Date: 2016-08-16 23:13:41
Edited BY: Yu Liang Edit Date: 2016-08-16 23:13:04
Edited BY: Yu Liang Edit Date: 2016-08-16 23:11:45
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