Spatial and temporal variability of the extent of chemically processed stratospheric air

摘要: Simulations of the spatial and temporal variability extent chemically processed air in Arctic stratosphere have been carried out using a three-dimensional chemistry-transport model for winters 1979 1989, Chemically is identified as that which amounts hydrogen chloride (HCl) calculated with parameterized loss conditions appropriate to polar stratospheric cloud (PSC) formation are substantially smaller than those gas phase chemistry only. It seen may be over much lower from early January late February, HCl depletions being larger 1989 1979. Near latitude circle, there important air. There some evidence transport mid-latitudes during these winters, but reductions more sporadic near pole. At 62 42N, occur preferentially longitude regions 60-120E 270-330E.