Impact of Pollutants on the Ozone Layer *ozone observations *the ‘Ozone Hole’ *Heterogeneous chemistry *global ozone depletion Dr Tony Cox ERCA 2004 -Lecture.

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Presentation transcript:

Impact of Pollutants on the Ozone Layer *ozone observations *the ‘Ozone Hole’ *Heterogeneous chemistry *global ozone depletion Dr Tony Cox ERCA Lecture 3

From TOMS Satellite data Antarctic Spring From Ground Based UV spectrometer Ozone Column trends FARMAN,ET AL., BRITISH ANTACTIC SURVEY R.STOLARSKI,ET AL., NASA

1987

FARMAN,ET AL., BRITISH ANTACTIC SURVEY

Descent of air from upper strat. containing HCl & ClONO 2

Chlorine Monoxide at 50 hPa ClO

Chlorine Nitrate at 50 hPa

Future Development of Polar zone Depletion

Stratospheric aerosol evolution from backscatter LIDAR measurements at mid-latitudes Aerosol surface Area from sounding

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