GEOG 2110L Lecture 2: GEOG 1111 NOTE 2
30 Aug 2015
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Many atmospheric processes involve getting the air to saturation. Varies with temperature & moisture content (3 9 c km ) Release of energy as it condense cool more slowly depends on how much moisture there is. Can you think of any situation where temperature would change without the addition (or subtraction of) energy? air out of tire. Air can be forced up and cooled adiabatically to saturation. Heating=work done + (change) in internal energy. 0=work dome + (change) in internal energy. Sometimes it"s easily displaced (unstable) Other times it resists lifting (stable) Unsaturated parcel (may still contain moisture) Forms of condensation: dew & frost, fog, and. Where can we get surface=dew, above ground=fog, higher in the air=cloud. Dew: water that has condensed onto objects near the ground. Need a surface for condensation (fog or clouds) Reduce absorbed solar by. Cloud: visible collection of tiny water droplets or ice crystals suspended in the air. Lots of condensation nuclei.
