Aerosols - The life cycle of atmospheric aerosol

3 important questions on Aerosols - The life cycle of atmospheric aerosol

Where is the bulk of the atmospheric aerosol mass present?

Present in the lower troposphere.

Residence times of particles in troposphere:

Varies from few days to few weeks.

How is the fine mode further divined?


Fine mode
  • accumulation mode (d = 0.1-1.0 um)
  • aitken mode (d = 0.01 - 1.0 um)
  • nucleation mode (d<0.001 um)

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