ATMO 201 Lecture 7: ch 4
5 Mar 2017
School
Department
Course
Professor
Document Summary
Condensation - the evidence that there is water vapor in the air. Dew point temperature (td) - temperature at which water vapor will condense. Dew - condensation of water droplets onto objects when tobject = td: the air temperature (t) is also close to td. Frost - also when tobject = td but close to or below freezing (also known as deposition: air temperature is usually no more than 2c or a few degrees above 32f. Haze - condensation of water droplets onto atmospheric particles: condensation nuclei (cn, visible light is scattered. Dew point temperature is a good measure of moisture content while wet bulb temperature is a good measure of dryness: point out the various geographic and seasonal influences. New england in the winter time (ice: air temperature and dew point both 28f, relative humidity 100 percent. Arizona desert: air temperature 96f, relative humidity 21 percent.
