NASA Sees Definitive Evidence of the Montreal Protocol's Success

The video discusses the impact of ozone-depleting substances, particularly chlorofluorocarbons (CFCs), on the ozone layer. It highlights the success of the Montreal Protocol in reducing these substances at the Earth's surface. The video explains how chlorine from CFCs destroys ozone in the stratosphere and presents new findings showing a decline in chlorine levels inside the Antarctic ozone hole. This decline is linked to a reduction in ozone depletion, as observed through NASA's microwave limb sounder data. The study confirms that the ozone hole is recovering, with ozone levels responding to the decrease in chlorine.

What is the significance of the decline in chlorine levels in relation to the ozone hole?

What does the study suggest about the recovery of the Antarctic ozone hole?