Intercomparison of stratospheric chemistry models under polar Vortex conditions

摘要: Several stratospheric chemistry modules from box, 2-D or 3-D models, have been intercompared. The intercomparison was focused on the ozone loss and associated reactive species under conditions found in cold, wintertime Arctic Antarctic vortices. Comparisons of both gas phase heterogeneous show excellent agreement between models constrained for photolysis microphysics polar clouds. While mean integral ranges 4–80% different 30–50 days long air parcel trajectories, scatter model results around these values is only about ±1.5%. In a case study, where employed their standard microphysical schemes, variation percentage increases to ±7%. This increased mainly due treatment PSC whereby most unrealistic assumptions processes consequently lead least representative chemistry. Furthermore, this study mixing ratios at altitudes were compared with measured profile investigate extent which reproduce losses. It that height range strong depletion all underestimate by factor two. finding corroborates earlier studies implies general deficiency our understanding rather than specific problem related particular simulation.