Big Ozone Holes Headed For Extinction By 2040: Excerpt
Video source record: https://images.nasa.gov/details/GSFC_20150506_Ozone_m11781_2040Holes_17s_Snippet
Player mode uses your custom Wikivideos controls.
Summary
The next three decades will see an end of the era of big ozone holes. In a new study, scientists from NASA Goddard Space Flight Center say that the ozone hole will be consistently smaller than 8 million square miles by the year 2040. Ozone-depleting chemicals in the atmosphere cause an ozone hole to form over Antarctica during the winter months in the Southern Hemisphere. Since the Montreal Protocol agreement in 1987, emissions have been regulated and chemical levels have been declining. However, the ozone hole has still remained bigger than 8 million square miles since the early 1990s, with exact sizes varying from year to year. The size of the ozone hole varies due to both temperature and levels of ozone-depleting chemicals in the atmosphere. In order to get a more accurate picture of the future size of the ozone hole, scientists used NASA’s AURA satellite to determine how much the levels of these chemicals in the atmosphere varied each year. With this new knowledge, scientists can
This page is styled with a Wikimedia-like layout while preserving the Wikivideos player and chapter workflow.
Details
- Source collection: NASA
- License: Public Domain (US Government)
- Category: Space