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SESK: Stuff Everyone Should Know · sesk.info/aero-mountain-wave-lift

Which atmospheric feature can help a sailplane climb near mountains?

A mountain wave can provide rising air.

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  1. Calm, still air
  2. Sinking air behind a ridge
  3. A mountain wave ✔

Why: Wind crossing a mountain range can form waves in the air. A sailplane pilot can use the rising part of a wave to climb.

Huh, didn't know that: The same wave pattern can contain both rising and sinking air.

The dad joke
The sailplane waved to the mountain, and the air waved back.
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References

Answer: A mountain wave. Wind crossing a mountain range can form waves in the air. A sailplane pilot can use the rising part of a wave to climb.

  1. Aerospace Dimensions Module 1: Introduction to Flight akwg.cap.gov/media/cms/Module_1__Intro_to_Flight_CE64D2DBD1245_e4d7f.pdf
    Sailplane pilots can use the motion of this wave to gain altitude.
    Checked 2026-10-10.

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