| Chemical ozone loss and related processes in the Antarctic winter 2003 based on Improved Limb Atmospheric Spectrometer (ILAS)–II observations (2006) | |||||||||||||
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| CHEMICAL OZONE LOSS AND RELATED PROCESSES THE ANTARCTIC WINTER BASED ILAS OBSERVATIONS Simone Tilmes Rolf uller Jens Uwe Groo Reinhold Spang Takafumi Sugita Hideaki Nakajima Yasuhiro Sasano Institute Stratospheric Research ICG ulich Germany Atmospheric Environment Division National Institute for Environmental Studies Japan currently National Center Atmospheric Research Boulder USA Short title CHEMICAL OZONE LOSS THE ANTARCTIC WINTER Abstract this study ILAS Improved Limb Atmospheric Spectrometer measurements were used analyze chemical ozone loss during the entire Antarctic winter using the tracer tracer correlation technique The temporal evolution both the accumulated local chemical ozone loss and the loss column ozone the lower stratosphere step with increasing solar illumination Half the entire loss column ozone occurred during September the end September almost the total amount ozone was destroyed between and Further ozone loss rates were strongly increasing during September for the entire lower stratosphere The values accumulated ozone loss and ozone loss rates strongly depend the altitude During September ozone mixing ratios show large day day variation Box model simulations the Chemical Lagrangian Model the Stratosphere CLaMS show that this result the erent history the observed air masses Further the box model supports the general evolution ozone loss values during September result strong increase halogen catalyzed ozone destruction Introduction Chemical ozone loss the | |||||||||||||
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