The south pole-centered map above is based on data from the Ozone Monitoring Instrument (OMI) on the Aura satellite.

上面以南极为中心的地图是根据“先兆”人造卫星上的臭氧监测仪的数据绘制的。

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"The data we've got from monitoring sites in London, and also the modelling work we have done, has helped us understand why ozone has behaved the way it has - at least in London, " she told BBC News.

BBC: London's clue to stubborn ozone levels