Ozone Observations

Top:False color images representing measurements of total column ozone for October 1990, 91, 92, and 93. The colors represent concentrations, from black (low) to white (high). The ozone "hole" is the region of low ozone concentration over Antarctica, and has been appearing annually since the "early" 1980s. The average ozone concentration in 1993 represents the lowest amount ever recorded.

Bottom:Total column ozone measurements for the Southern Hemisphere on 28 October 1993.