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
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