No more Ozone Holes

Good news: The next three decades will see an end to the era of big ozone holes. NASA scientists report in a new study that the Antarctic ozone hole will be consistently smaller than 8 million square miles by the year 2040. Man-made chemicals in the atmosphere cause a hole to form in the ozone layer over Antarctica each year. Although emissions of these chemicals have been declining in recent years thanks to the 1989 Montreal Protocol, which bans the production of ozone-depleting substances, max ozone hole sizes have remained larger than 8 million square miles since the early 1990s. Using data collected by NASA’s Aura satellite, scientists were able to determine how chemical levels in the ozone hole varied each year, and predict how hole sizes would change in the future.  

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s