Mondo Knows Facts

The troposphere contains three quarters of all atmospheric mass

Earth lowest atmospheric layer holds almost all atmospheric water vapour and weather

The troposphere is the atmospheric layer extending from Earth's surface up to about 8 to 15 kilometres depending on latitude. Gravity pulls most gas molecules downward, concentrating roughly 75 percent of atmospheric mass and 99 percent of total water vapour within this bottom layer. Almost all planetary cloud formations and weather events take place here.

Concentration of Atmospheric Carbon Dioxide from Earth's Mid-Troposphere, 2002 to 2013 (8787670559)
Atmospheric Infrared Sounder ยท Public domain ยท source

Where this comes from

NOAA

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Tags: earth science, atmosphere, troposphere

The troposphere contains three quarters of all atmospheric mass: the short answers

Where does this come from, and can I check it?
Earth lowest atmospheric layer holds almost all atmospheric water vapour and weather. The figure is taken from NOAA, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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