| Ozone Loss in the Arctic Stratosphere as Observed by Match (2004) | |||||||||
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| GEOPHYSICAL RESEARCH LETTERS VOL PAGES DECEMBER Ozone loss rates the Arctic stratosphere the winter Modelcalculationscompared with Match results Gaby Becker Rolf Miillerl Daniel McKennal Markus Rex and Kenneth Carslaw Abstract present box model calculations ozone loss rates corresponding the results the Match experiment The Match technique inferschemicalozone pletion from analysis pairs balloon soundings that measure ozone the same airparcel different points calculated trajectory allows quantitative comparison with model results because the exposure the observed air masses sunlight well known The model significantly underestimates the loss rates inferred for January mid February Extensive sensitivity studies show that the dis crepancy between model and Match results cannot plained the known uncertainties the model parame ters Introduction recent years substantial chemical ozonedepletion has been observed the Arctic polar vortex Waters etal Manney Miilleret now widely accepted that this ozone loss qualitatively under stood terms halogen catalyzedchemistry Nevertheless recent studies indicate that current models underestimate the observed ozone depletion Goutail Hansen Woyke Edouard pro posed that thelimited spatial resolution models could account for the discrepancy between observedand simulated ozone loss However box models are notaffected this way and may even overestimate ozone loss rates failing count formixingprocesses Here present boxmodel study thatquantitatively tests | |||||||||
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