The observed ozone flux by transient eddies, 0–30 km

Ozonesonde data are matched with concomitant rawinsonde data to provide a direct determination of horizontal, meridional, flux of ozone by the transient eddies. Data are from 27 stations in 4 regions: Eastern and western North America, western Europe, and Japan. Results confirm the existence of significant northward flux near 40°N, 10–18 km, in winter and spring, as shown by previous investigators. However, areas of significant equatorward flux are found at high mid-latitudes, 10–16 km, over North America in winter and spring, and at all 3 Japanese stations, 10–18 km, in spring. Transient eddy fluxes are typically small in summer, and are also small throughout the troposphere and most of the middle stratosphere.