wunder beta

📘 How greenhouse gases warm air

Follow infrared absorption, emission, atmospheric windows, convection, feedbacks, and energy balance.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

Energy in
Molecular absorption
Emission
Atmospheric window
Vertical profile
Water vapor
Carbon dioxide
Convection
Feedbacks
Measurement

Questions this course answers

What radiation does Earth emit after absorbing sunlight?

A cooler Earth emits energy mainly as thermal infrared.

Why are some gases greenhouse gases?

Their molecular modes interact with outgoing thermal radiation.

What is an atmospheric window?

Some wavelengths escape more easily than others.

Why does adding greenhouse gas warm the lower system?

The altered radiative pathway requires warming before outgoing energy matches input.

Why is water vapor often a feedback?

A warmer atmosphere can hold more vapor, amplifying an initial forcing.

Grounded in trusted sources

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