Modes of atmospheric aerosols

Question 1

Nucleation mode - size and typical lifetime

Answer 1

<30 nm, a few hours

Question 2

Aiken mode - size and typical lifetime

Answer 2

30-100 nm, a couple of days

Question 3

Accumulation mode - size and typical lifetime

Answer 3

0.1-1 µm, about a week

Question 4

Coarse mode - size and typical lifetime

Answer 4

1-10 µm, a few hours

Question 5

ultrafine size

Answer 5

<0.1 µm

Question 6

fine size

Answer 6

<1 µm