| Chemical ozone loss in the Arctic and Antarctic stratosphere (2006) | |||||||||||||
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| CHEMICAL OZONE LOSS THE ARCTIC AND ANTARCTIC STRATOSPHERE BETWEEN AND Simone Tilmes Rolf uller Andreas Engel Markus Rex James Russell III Institute for Stratospheric Research ICG Forschungszentrum ulich Germany University Frankfurt Germany AWI Potsdam Germany Hampton University Hampton USA currently NCAR Boulder USA Short title POLAR CHEMICAL OZONE LOSS Abstract Ozone depletion the lower polar stratosphere strongly dependent the the amount chlorine activation that controlled polar stratospheric cloud PSC occurrence and thus temperature a new measure the PSC formation potential PFP suitable for assessing ozone depletion both polar regions contrast the previously ned volume possible PSC existence VPSC this measure normalized the vortex volume accordance with loss column ozone averaged over the polar vortex and includes the lifetime the vortices Chemical ozone loss derived between and for Arctic and Antarctic winters correlates well with the PFP the Arctic the Antarctic chemical ozone loss saturated The year year variation the PFP for the Arctic has risen over the past thirty years with maximum value winter Accordingly maximum chemical ozone loss has reached Antarctic loss values Introduction Ozone depleting substances are slowly decreasing the atmosphere consequence the Montreal Protocol that recovery the ozone layer expected over the coming decades WMO The observed cooling the polar stratosphere winter annual and global mean basis the last two decades WMO enhances the potentia | |||||||||||||
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