EARTHSS 23 Lecture 5: ESS23 Lecture 8
10 Mar 2017
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Document Summary
Aerosol: a suspension of small solid or liquid particles in a gas or air. External mixture: particle composition is the same as that when the particle was emitted. Internal mixture: particle composition differs from that when it was emitted due to condensation, dissolution coagulation, and other physical processes afftecting composition. Particle size distribution: variation of particle concentration (number, surface area, volume, or mass of particles per unit volume of air) with size, size distribution is usually divided into modes. Sea spray: forms when winds and waves force air bubbles to burst at sea surface, have composition of sea water initially. Spume drops: drops larger than bubble bursting sea spray form when winds tear off wave crests. Sea-spray acidification: reduction in chloride in sea spray drops as sulfuric acid or nitic acid enter the drops. Dehydration: water loss when drop evaporates in low relative-humidity air.
