Clouds & Particles

Basics

2. Particles

1. Your release of aerosols

Name at least three of your daily activities which may lead to release of aerosols into the atmosphere.

2. Secondary and primary aerosols

How do secondary aerosols differ from primary?

3. High urban aerosol concentrations

Why do you think aerosol concentrations are higher in urban areas than in marine environments?

4. Aerosols staying for months 

Aerosols usually stay in the atmosphere for only a few days before being deposited back on the ground. Mention a way for aerosols to stay in the atmosphere for much longer times (months).

5. Inhaling aerosols at work

Many miners and industry workers inhale small particles in their work environment. What kinds of particles do you think are inhaled by

• coal miners? 
• cotton/clothes factory workers? 
• bakers?   
• construction workers?
• carpenters?
• veterinarians?

Authors: Ellen K. Henriksen and Camilla Schreiner - University of Oslo - Norway. Scientific reviewer: Justine Gourdeau - LaMP Clermont ferrand - France - 2004-01-13. Last update: 2004-03-27.