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- Newsgroups: sci.geo.meteorology
- Path: sparky!uunet!wupost!uwm.edu!spool.mu.edu!umn.edu!lynx!cancer.unm.edu!PREISER
- From: preiser@cancer.unm.edu (Doug Preiser)
- Subject: Re: Temperature vs Altitude
- Message-ID: <ajxr=wk@lynx.unm.edu>
- Date: Tue, 05 Jan 93 18:40:51 GMT
- Organization: UNM Cancer Center
- References: <1993Jan4.213715.20998@cc.umontreal.ca>
- Reply-To: preiser@cancer.unm.edu
- Lines: 43
-
- In article <1993Jan4.213715.20998@cc.umontreal.ca>, dignard@ERE.UMontreal.CA (Michel Dignard) writes:
- >Maybe this not exactly the rigth group for this, but :
- >
- >I just saw a diagram of Temperature vs Altitude for Earth.
- >I knew that temperature decreases with altitude, but I was
- >puzzled to see that as we go to the mesosphere, the thermosphere
- >and the exosphere, temperature then increases, then decreases again,
- >and then increases to very high figures.
- >
- >Here are the figures (visual interpolation and rounding up):
- >
- > stratosphere 20000 m -50 C
- > 40000 0
- > mesosphere
- > thermosphere 80000 -80
- > 100000 +165
- > 150000 +700
- > 200000 +900
- > 300000 +950
- > exosphere 500000 +1000
- >
- >
- >Could someone confirm this pattern and explain it?
- >
- >Are the temperatures for the exosphere a measure of the
- >solar wind temperature?
- >
- >--
- >Michel Dignard Dignard@ERE.UMontreal.CA
- >Universite de Montreal
- >
- First, remember that temperature is only a measure of average kinetic energy of
- whatever kind of particles you have around. Also, in the upper atmosphere
- things are pretty scarce. Even though the particles are pretty energetic, there
- aren't enough of them to heat anything up. You would freeze in the shade, cook
- in the sun.
-
- So, why are they so energetic? Well, there isn't anything up there to absorb
- the high-energy radiation from the sun, so it just comes blasting right in and
- sends those particles flying.
-
- Internet: preiser@cancer.unm.edu
- Bitnet: preiser@unmb
-