Sentences with phrase «2000s opening holes»

Not exact matches

The researchers tracked the yearly opening of the Antarctic ozone hole in the month of September, from 2000 to 2015.

The largest ozone hole ever seen has opened up over Antartica, a sign that ozone - depleting gases churned out years ago are just now coming to their peak, NASA scientists reported September 8, 2000.

Their measurements, focusing on a time period in September each year — during which time the colder temperatures in the atmosphere promote the reactions that destroy ozone so that the hole is opening up — show that since 2000, the hole has shrunk by 1.7 million square miles, an area more than half the size of the continental United States.