Atmospheric Sciences 101 Humidity.

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Presentation transcript:

Atmospheric Sciences 101 Humidity

Air is mostly composed of Nitrogen (N2, 78%) and Oxygen (O2, 21%), with the next largest component being water vapor (H20, ~0-4%) Humidity is a measure of the water vapor content of the air Water vapor plays a critical role in the atmosphere Associated with clouds and precipitation Very important way of moving energy in the atmosphere E.g., energy going into evaporating water vapor in the tropics, which condenses and release energy in the midlatitudes Has a big influence on our comfort and how we cool when warm

Some basic water vapor concepts H2o vapor is a DRY gas, just like O2 and N2. It is not ”wet”