What happened to the world's ozone hole?
In the late 1970s, Jonathan Shanklin, a meteorologist with the British Antarctic Survey, spent much of his time tucked away in an office in Cambridge working through a backlog of data from the southernmost continent on our planet.
Shanklin was responsible for supervising the digitisation of paper records and computing values from Dobson spectrophotometers – ground-based instruments that measure changes in atmospheric ozone.
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