DOI: 10.1029/2004jd005416
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Abstract: [1] The isentropic cross-tropopause ozone transport has been estimated in both hemispheres in 1999 based on the potential vorticity mapping of Stratospheric Aerosol and Gas Experiment II ozone measurements and contour advection calculations using the NASA Goddard Space Flight Center Global and Modeling Assimilation Office analysis. The estimated net isentropic stratosphere-to-troposphere ozone flux is $118 ± 61 Â 10 9 kg yr À1 globally within the layer between 330 and 370 K in 1999; 60% of it is found in the …

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