1.
stratosphere
The layer of Earth's atmosphere above the troposphere, extending from about 10-50 km altitude.
飛行機は成層圏を飛ぶ。
Airplanes fly in the stratosphere.
成層圏にはオゾン層がある。
The ozone layer is in the stratosphere.
成層圏は対流圏の上にある。
The stratosphere is above the troposphere.
成層圏 is the stratosphere, the second layer of Earth's atmosphere. Word formation: 成層 (stratified layers) + 圏 (sphere/zone).
ATMOSPHERIC LAYERS (low to high):
- 対流圏: troposphere (weather occurs here)
- 成層圏: stratosphere (10-50 km altitude)
- 中間圏: mesosphere
- 熱圏: thermosphere
KEY FACTS:
- Contains the オゾン層 (ozone layer)
- Temperature increases with altitude (unlike the troposphere)
- Very little weather activity — skies are calm
COMMON COLLOCATIONS:
- 成層圏の気温: stratospheric temperature
- 成層圏オゾン: stratospheric ozone
NOTE:
Commercial aircraft typically fly at the boundary between 対流圏 and 成層圏.