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

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

FARMAN,ET AL., BRITISH ANTACTIC SURVEY

Descent of air from upper strat. containing HCl & ClONO2

Chlorine Monoxide at 50 hPa

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

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