impact of pollutants on the ozone layer *ozone observations *the ‘ozone hole’ *heterogeneous...

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Impact of Pollutants on the Ozone Layer *ozone observations *the ‘Ozone Hole’ *Heterogeneous chemistry *global ozone depletion Dr Tony Cox ERCA 2004 -Lecture 3

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Impact of Pollutants on the Ozone Layer

*ozone observations

*the ‘Ozone Hole’

*Heterogeneous chemistry

*global ozone depletion

Dr Tony Cox ERCA 2004 -Lecture 3

From TOMSSatellite data

Antarctic SpringFrom Ground Based UV spectrometer

Ozone Columntrends

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 & ClONO2

Chlorine Monoxide at 50 hPa

ClO

Chlorine Nitrate at 50 hPa

Future Development of Polar zone Depletion

Stratospheric aerosol evolution from backscatterLIDAR measurements at mid-latitudes

Aerosol surface Area from sounding