Friday, April 30, 2010

QOD#6

Why is it so windy???

2 comments:

  1. becasue I did something terribly wrong at some time in my life and this is the punishment I have to endure. Herb schedules's a flight and they turn on the wind machines on the coast so that I can't fly.

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  2. Let me try a different answer.... first I would say that this seems to be a simple question but the answer is very complex. In general, wind is caused by air moving from regions of high pressure to low pressure. The greater the difference in the pressure between the high and low pressure regions, the stronger the wind. In addition, the heating and cooling of the earth surfaces have a role in this. It seems that we typically see the winds start to increase in the afternoons and then they gradually decrease in the evenings. This should be due to the uneven heating of the land masses around the bay area as compared to the coastal waters. The land masses absorb radiation from the sun easier or quicker than the coastal waters water so the land masses tend to heat up. This causes a pressure difference and so during the afternoon, the wind increases from the cooler ocean areas to the warmer inland areas. As the sun sets, the land masses start to cool and the pressure differences diminish causing the winds to subside a bit.

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