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Why does air temperature change as altitude increases?
It get's colder as you travel up into the atmosphere because the ozone layers block away a lot of heat. But once you get to the tropsphere layer te temperature is about 1,600 degrees because the sun goes throught that layer first, and that layer is about 500 kilometer's thick.
Why does the air temperature at different altitudes change?
Well, why does the temperature in different areas change? The same locations can't be the same temperature. Just as the closer to the North and South pole means the temperature will be colder, the higher you are from the ground, the colder it will be, generally speaking. The sun doesn't really do much to warm the air, it warms the ground, and the ground warms the air. That's why the temperature doesn't do a near-instant drop when the sun goes down. Since the ground is the heat source, the higher up, the further from the heat source, and thus the colder it is. With that being said, temperatures can be warmer higher up, due to the fact that the air is constantly moving. Jet streams are very good at transferring warm and cold air, at levels far above the ground. Warmer air will warm the surrounding air, slightly cooling off as the heat exchanges, further contributing to different temperatures at ground level, as well as above it. Of course, the reverse effect happens with cold air; it will cool off the air around it, assuming it is colder than the air, warming up when the heat exchanges. Air temperature changes because of differing air pressures.
How would heat change the density of a parcel of air?
how heat would change the density of a parcel of air?
Why does relative humidity depend on air temperature?
Relative Humidity is the ratio of the mass of vapour present in a certain volume of air to the mass of water vapour required to saturate the same volume of air at the same temperature. Another way of defining relative humidity is related to dew point. I.e relative humidity=s.v.p at dew point over s.v.p at air temperature multiply by 100%. And dew point is dependent upon prevalent atmospheric conditions like TEMPERATURE,wind and the amount of water vapour in the atmosphere.
Would dew point temperature be close to that of the air temperature if there is heavy fog on the ground?
Yes! In fact, the air temperature and dewpoint should be exactly the same during heavy fog.
