WebOn September 17, 1979 (top left), the first year in which ozone was measured by satellite, the ozone level was at 194 Dobson Units. On October 7, 1989 (top right), the year that the … WebOct 28, 2024 · 1979 - 2024 PNG On October 7, 2024, scientists recorded a total-column ozone concentration of 102 Dobson units, the 8th-lowest level since 1986. Prior to the emergence of the ozone hole in the 1970s, average ozone above the South Pole in September and October ranged from 250 to 350 Dobson units.

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WebOct 19, 2024 · In 1985 Jonathan Shanklin was a junior researcher at BAS when he discovered a hole in the invisible shield that protects us from solar radiation. We catch up with him to learn about his work and how it has made a difference. It’s 36 years since scientists first discovered the hole in the ozone layer. An invisible shield that absorbs … WebMar 21, 2024 · The British Antarctic Survey first began measuring ozone concentrations above Antarctica in the 1950s. But several decades passed before it became clear there … saint augustine high school san diego ca

Substantial Antarctic Ozone Hole in 2024 - NASA

WebNov 22, 2024 · According to the joint release, satellite-based measurements revealed that the ozone hole—the total area with ozone column amounts below 220 Dobson units—reached its peak extent on October 7, spanning an area 9.6 million square miles (24.8 million square kilometers), which is roughly the size of North America. Webozone depletion, gradual thinning of Earth ’s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. … WebJan 10, 2024 · Over the past 30 years, humans have successfully phased out many of the chemicals that harm the ozone layer, the atmospheric shield that sits in the stratosphere about nine to 18 miles (15 to 30... thiers issard sabatiermesser