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📘 How the ozone layer absorbs ultraviolet

Trace oxygen photochemistry, ultraviolet absorption, catalytic chlorine, polar clouds, and ozone monitoring.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

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What you’ll learn

Oxygen chemistry
UV shield
Natural balance
Chlorine activation
Catalysis
Polar vortex
Transport
Seasonality
Measurement
Recovery

Questions this course answers

What is ozone?

Ozone is O3, formed and destroyed in stratospheric photochemistry.

Why is the ozone layer important?

Ozone absorbs biologically damaging UV wavelengths.

What is a catalyst in ozone chemistry?

Catalytic radicals are regenerated during reaction cycles.

Why do polar ozone losses peak in spring?

Cold particle chemistry prepares reactive halogens before spring photolysis.

How is ozone measured?

Remote and in situ instruments use ozone's optical signature.

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