Okay, there are issues of definitions. I'll note that the upper atmosphere
is bombarded by "cosmic rays" which in fact are mostly very high-energy
protons originating outside our Solar System. Protons are of course the
nuclei of hydrogen
Bruce
==
What means "atmosphere" anyway? For the purposes of this
discussion, I have been assuming "Troposphere" which is roughly
where most "interesting" phenomena happens... like human habitation,
most "life", most of what we call "weather", etc. The
"Stratosphere" is also i
And here's some (scary?) data on atmospheric CO2 trends which do not
showing a constant concentration with time.
http://www.esrl.noaa.gov/gmd/ccgg/trends/#mlo
Annual fluctuations observed at Mauna Lao, Hawaii at 3500m are reported
to be due to vegetation cycles suggesting something about atm
Fabio Carerra reports the second tornado of his life in his neighborhood of
Venice, with a picture album.
http://venice2point0.blogspot.com/2012/06/retornado.html
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You can start reading lots about our Atmosphere at:
http://en.wikipedia.org/wiki/Earth%27s_atmosphere
At some point the article mentions that the troposphere (layer) is of
uniform composition (but for water) and the exosphere is mainly hydrogen
and helium. The latter is higher than the space
You are correct, the air at the topmost level of the atmosphere, the
exosphere, is primarily composed of hydrogen. This hydrogen most
likely comes from decomposition of atmospheric water into hydrogen and
oxygen.
You're also right that there is a gradient of gasses as you move from
sea level to sp
Huh? That makes no sense. Moreover, there is NO hydrogen or helium in
our atmosphere. Any that we might have once had is long gone. Given
the very large average height and correspondingly high average speed
(and much higher speed in the high-speed tail of the distribution),
these very-low-mass spec
As, oddly, no one seems to have mentioned it yet... I'm pretty sure that air
does separate. Am I wrong to think that "air" at a high enough altitude is
mostly hydrogen? So the question is not what keeps it from separating, but what
keeps it from separating more fully... right?
Eric
On Wed, Jun
Thanks, everybody.
I realize that most of you have day jobs and don't have time to be teachers
in my self-designed Elder-Hostel Education program, but if you do have a
moment, could you answer the following questions?
In these questions, the words "cool" and "warm" will have a technical
