Mainstream descriptions of the Earth’s atmosphere tend to focus upon five nebulous atmospheric layers and a table of atmospheric gases which suggests Nitrogen [at 78.084%] is the dominant gas.
These mainstream overviews conveniently omit details Settled Science wants to ignore.
Therefore, the objective of this post is to provide some balance by documenting some of the hidden gems I have stumbled across in the last few years.
A good starting point is to note that the dominant atmospheric gas is:
1) Molecular Nitrogen [N2] at sea-level.
2) Atomic Oxygen [O1] at an altitude of about 200 kilometres.
3) Helium [He] at an altitude of about 650 kilometres.
4) Atomic Hydrogen [H1] at an altitude well above 1,000 kilometres.
US Standard Atmosphere 1976
International quiet solar year daytime ionospheric and atmospheric composition based on mass spectrometer measurements [Johnson, 1969; Luhmann, 1995].
The University of Sydney – School of Physics
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