Saturday, February 4, 2012

Help with my weather and climate class?

If you run a humidifier or vaporizer to increase the indoor humidity in winter, much of the water added to the air ends up on the windowsill. Explain why this happens.

A January snowfall covers central Arkansas with 5 inches of snow. The following day, a south wind brings heavy fog to this region. Explain what has apparently happened. Be specific.

I've read the textbook and google the question but I can't seem to find the answer. Any help will be greatly appreciated. Thank you.|||In the winter, the air temperature is colder outside than inside. The window is therefore colder than the air inside. as the air inside is perhaps at 35 percent relative humidity, when it comes near, or in contact with the window, it reaches dew point temperature and form droplets. The point is: The colder the temperature, the less moisture the air can contain and the greater the relative humidity will be. That is why the air is very dry in our homes in the winter. The relativel moist air from outside becomes very dry air once warmed up to the inside temperature.

As warmer air moves in over cold one from the snow covered ground, it forms an inversion; the air is colder under than above and the normal convection of the rising air doesn't occur. as the temperature of the milder southerly air mass cools down over the snow, it reaches dew point and fog forms.

Both questions are about the difference between absolute and relative humidity. Good luck!


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