Re: Convection is fiction

From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups	sci.physics
Subject	Re: Convection is fiction
Date	2016-08-22 18:56 +0200
Organization	PointedEars Software (PES)
Message-ID	<4805089.ixb8bjaV6e@PointedEars.de> (permalink)
References	<e5b8b178-c782-4768-ac07-0cf0b4f62c15@googlegroups.com> <upq9rb9itah8fb03u990e1ppt12tsbr004@4ax.com> <23764527.rf7BzDKH0Z@PointedEars.de> <npf6mu$9r6$1@dont-email.me>

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Poutnik wrote:

> On 08/21/2016 05:57 PM, Thomas 'PointedEars' Lahn wrote:
>> ....atmospheric pressure that
>> is decreasing approximately exponentially with altitude within the higher
>> troposphere:
>>
>>   p ≈ p₀ exp(−g M h∕(R T₀))
>>
>> where
>>
>>   p  – atmospheric pressure
>>   p₀ – standard atmospheric pressure at sea level (101'326 Pa)
>>   g  – Earth-surface gravitational acceleration (ca. 9.81 m∕s²)
>>   M  – molar mass of dry air (ca. 0.03 kg∕mol)
>>   h  – altitude
>>   R  – universal gas constant (ca. 8.31 J mol⁻¹ K⁻¹)
>>   T₀ – standard temperature at sea level (288.15 K = 15 °C)
>>
> 
> This approximation serves well for low troposhere near sea level,
> but does not count with the decreasing of temperature with altitude.
> […]

This approximation is for higher altitudes within the troposphere.  Unless, 
of course, you find it prudent to correct the Wikipedia article it is from:

<https://en.wikipedia.org/wiki/Atmospheric_pressure#Altitude_variation>

-- 
PointedEars

Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

Thread

Convection is fiction Claudius Denk <claudiusdenk@gmail.com> - 2016-08-13 09:44 -0700
  Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-13 15:14 -0700
  Re: Convection is fiction Michael J. Strickland <michael06582@comcast.net> - 2016-08-17 19:01 -0400
    Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-17 16:28 -0700
      Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-17 22:20 -0700
    Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-21 17:57 +0200
      Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-21 18:16 +0200
        Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-21 18:46 +0200
          Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-21 18:56 +0200
            Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-21 19:09 +0200
              Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-21 19:27 +0200
              Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 07:39 +0200
                Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-22 19:58 -0700
              Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 17:17 +0200
                Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-22 20:02 -0700
            Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-21 12:38 -0700
              Re: Convection is fiction Claudius Denk <claudiusdenk@gmail.com> - 2016-08-21 17:11 -0700
                Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-21 19:59 -0700
        Re: Re: Convection is fiction Michael J. Strickland <michael06582@comcast.net> - 2016-08-21 22:34 -0400
          Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 06:52 +0200
          Re: Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-22 19:02 +0200
            Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 19:17 +0200
              Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-22 20:05 -0700
              Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 01:16 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 05:53 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 18:47 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 21:04 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 06:09 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 19:03 +0200
                Re: Convection is fiction Sergio <invalid@invalid.com> - 2016-08-24 12:16 -0500
                Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-24 11:11 -0700
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 21:36 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-25 06:20 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-25 08:13 +0200
                Re: Convection is fiction Sergio <invalid@invalid.com> - 2016-08-25 09:40 -0500
      Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-21 12:14 -0700
      Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 17:45 +0200
        Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-22 18:56 +0200
          Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 19:14 +0200
            Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-22 20:54 +0200
              Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 01:56 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 06:02 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 06:14 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 19:07 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 21:15 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 06:31 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 06:54 +0200
            Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 01:10 +0200
              Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 05:53 +0200
              Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 07:32 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 19:15 +0200
                Re: Convection is fiction Poutnik <poutnik4nntp@gmail.com> - 2016-08-24 21:11 +0200
                Re: Convection is fiction Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-08-24 21:26 +0200
                Re: Convection is fiction Sergio <invalid@invalid.com> - 2016-08-24 15:07 -0500
        Re: Convection is fiction James McGinn <jimmcginn9@gmail.com> - 2016-08-22 20:04 -0700
  Re: Convection is fiction Claudius Denk <claudiusdenk@gmail.com> - 2016-08-21 19:31 -0700

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