ATom Postcard - Punta Arenas to Ascension Island

The video covers a journey to Arenas, Chile, highlighting the transition to winter in the southern hemisphere. It explores atmospheric sampling, focusing on ozone levels and the impact of CFCs, which remain in the atmosphere despite being banned. The video also discusses the geological formation of Green Mountain on Ascension Island due to tectonic activity. Finally, it examines pollution from southern Africa, its unexpected concentration, and the Baytown Project's efforts to understand its impact on the global atmosphere.

What was the temperature outside the aircraft when exploring the stratosphere?

• Minus 90 degrees Celsius

• Minus 50 degrees Celsius

• Minus 70 degrees Celsius

• Minus 30 degrees Celsius

What is the primary cause of the ozone hole formation?

• Nitrous oxide

• Carbon dioxide emissions

• Chlorofluorocarbons (CFCs)

• Methane gas

How long is it expected to take for CFCs to completely disappear from the atmosphere?

• 20 years

• 30 years

• 50 years

• 10 years

What geological process is responsible for the formation of Green Mountain on Ascension Island?

• Tectonic processes

• Volcanic eruption

• Erosion

• Sedimentation

Where does the smoke and pollution encountered near Ascension Island originate from?

• Southern Africa

• Australia

• South America

• North America