Irina Petropadlovskikh

And it's very good for us.

It protects us from the harmful muv radiation.

And that's why we want more of this, not less of that.

Scientists noticed that ozone is changing slowly but surely.

But they didn't know how much it's changing until maybe the beginning of the 80s, when the scientists actually measured ozone.

significant change that was happening in the springtime in Antarctica.

And so they noticed that there was less ozone.

Yeah.

In Antarctica, the maximum of the ozone is happening during months of December, January.

And it's happening naturally.

You know, there is an increase in the ozone layer.

throughout the year, and then when the polar night comes in, there is no sun, and so there is not much of the ozone production happening during the wintertime.

Antarctica has a very specific process.

Because it's a continent, the atmosphere can create these strong winds that circulate around Antarctica.

And so they separate the air that's over Antarctica from the rest of the other latitudes outside of Antarctic vortex.

So there is no really way to mix it with other airflow.

What did they do?

So scientists flew into Antarctica on the aircraft, and they also set up the camp on Antarctica continent.

But the most interesting observation they made is that when they're flying inside of Antarctica,

They continuously measured both ozone and chlorine, the chemicals that they thought that might be destroying ozone.