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Strahan & Douglass 2004
Strahan, S.E. and Douglass, A.R. (2004). Evaluating the credibility of transport processes in simulations of ozone recovery using the Global Modeling Initiative three-dimensional model. Journal of Geophysical Research 109: doi: 10.1029/2003JD004238. issn: 0148-0227.

The Global Modeling Initiative (GMI) has integrated two 36-year simulations of an ozone recovery scenario with an offline chemistry and transport model using two different meteorological inputs. Physically based diagnostics, derived from satellite and aircraft data sets, are described and then used to evaluate the realism of temperature and transport processes in the simulations. Processes evaluated include barrier formation in the subtropics and polar regions, and extratropical wave-driven transport. Some diagnostics are especially relevant to simulation of lower stratospheric ozone, but most are applicable to any stratospheric simulation. The global temperature evaluation, which is relevant to gas phase chemical reactions, showed that both sets of meteorological fields have near climatological values at all latitudes and seasons at 30 hPa and below. Both simulations showed weakness in upper stratospheric wave driving. The simulation using input from a general circulation model (GMIGCM) showed a very good residual circulation in the tropics and Northern Hemisphere. The simulation with input from a data assimilation system (GMIDAS) performed better in the midlatitudes than it did at high latitudes. Neither simulation forms a realistic barrier at the vortex edge, leading to uncertainty in the fate of ozone-depleted vortex air. Overall, tracer transport in the offline GMIGCM has greater fidelity throughout the stratosphere than it does in the GMIDAS.

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Abstract

Keywords
Atmospheric Composition and Structure, Middle atmosphere—constituent transport and chemistry, Meteorology and Atmospheric Dynamics, General circulation, Meteorology and Atmospheric Dynamics, Numerical modeling and data assimilation, stratospheric model, process evaluation, transport
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
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