GEOG 111 Lecture Notes - Lecture 4: Lifted Condensation Level, Fluid Parcel, Hygrometer
Document Summary
Cooler air has a lesser amount of possible maximum water vapor than warmer air. Humidity patterns vary both daily and annually. When temperature is highest relative humidity is lowest. Vapor pressure, the component of air pressure that"s being exerted by water vapor. Hair hygrometer used to measure continuous vapor pressure, uses human hair to measure changes in humidity (bad hair days) Buoyancy: a force that acts on a parcel of air, pulling it up by warming it up, in contrast to gravitational force. If air is stable these are in balance, unstable if something changes and air parcel moves such as cooling or warming, changing the density of the parcel. Adiabatic processes, the change in temperature of a moving parcel of air. A rising air parcel expands and cools while a sinking one compresses and warms. These contribute to the formation of clouds and precipitation. Lifting condensation level, when rising air parcel reaches saturation/dew point.
