The lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.‘The stratosphere is the atmospheric layer between the troposphere and the mesosphere and extends from about 12 km altitude to about 50 km.’
- ‘The stratosphere extends above the troposphere to about 150,000 feet and is the region where the ozone layer is formed.’
- ‘The other two climate records, so-called ‘upper air’ records, measure temperatures in Earth's troposphere and stratosphere.’
- ‘Because of the cloud spreading at the top, the height of the troposphere in the area can also be calculated.’
- ‘Also, the presence of stratospheric ozone sandwiched between the satellite and the troposphere makes seeing tropospheric ozone very difficult.’
Early 20th century from Greek tropos ‘turning’+ sphere.
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