L1 /
2
CH3041
< 200 nm
CCN < 0.4mm
AEROSOLS II
• Classification
according to Origin: (Tg = 1012g)
Primary: Forest fires 70Tg/y Sea salt 1200Tg/y
Dust: surface 500Tg/y, volcanic, meteoritic
Secondary: Sulphate Organic Nitrate NH4NO3
• Classification
according to Size:
according to Size:
• Surface chemistry
occurs on those
aerosol particles
that do not dissolve.
eg PSC / ClONO2
occurs on those
aerosol particles
that do not dissolve.
eg PSC / ClONO2
nucleation
mode
0.001 – 0.1 mm
accumulation mode
0.001 – 0.1 mm
accumulation mode
0.1 – 1 mm
Coarse particle mode >
1mm
