Dynamical factors affecting ozone mixing ratios in the Antarctic lower stratosphere

• Main Authors: Shiotani, Masato, Gille, John C.
• Format: Other/Unknown Material
• Language: unknown
• Published: 1987
• Subjects: 46; Antarctic; South Pole; The Antarctic; Antarc*; South pole
• Online Access: http://ntrs.nasa.gov/search.jsp?R=19870066897

An account is given of the climatology and interannual variability of dynamical quantities and ozone mixing ratios during the Southern Hemisphere spring for 1979-1984. The seasonal variation in temperature in the lower stratosphere is repeatable; a steep decrease in zonal mean ozone mixing ratios is observed around 60 deg S toward the South Pole in September which, with time, becomes shallower in association with minor warmings and a final warming. Climatological synoptic charts in the lower stratosphere show the circumpolar circulation in the geopotential height field and the prominence of planetary wave 1 in the temperature and ozone fields. When wave activity is strong, there are weaker westeries, higher temperatures, and higher ozone mixing ratios at high latitudes.