Ozone Levels Over North Pole Are Lowest Ever for Spring, NASA Says
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From Times staff and wire reports
The lowest levels of springtime ozone ever detected over the North Pole have been mapped by instruments on a series of satellites, according to NASA.
Ozone levels in late March and early April over the Arctic were 40% lower than the average March measurements made from 1979 to 1982, said Pawan K. Bhartia of NASA’s Goddard Space Flight Center in Greenbelt, Md. A year ago, measurements detected an ozone hole in the North Atlantic that was about 24% less dense than the 1979-82 period.
Although the Arctic ozone has thinned, the loss is not nearly as severe near the North Pole as it is over the South Pole during the southern hemisphere’s spring.
