Graph Showing Antarctic Ozone Decreasing by 60% from the 1950s to the 1980s
Visualizations by
Barbara Summey
Released on April 9, 1999
During the spring of 1985, British researchers using ground-based instruments measured dramatic changes in the ozone layer. As much as sixty percent of the ozone over Antarctica was rapidly disappearing each spring.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0