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New Thinking On Evaporation May Affect Climate Models

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  New Thinking On Evaporation May Affect Climate Models Sam Wormley <swormley1@gmail.com> - 2015-10-23 11:42 -0500
    Re: New Thinking On Evaporation May Affect Climate Models "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-10-23 10:54 -0700
    Re: New Thinking On Evaporation May Affect Climate Models jimp@specsol.spam.sux.com - 2015-10-23 18:20 +0000
      Re: New Thinking On Evaporation May Affect Climate Models Sam Wormley <swormley1@gmail.com> - 2015-10-28 20:02 -0500
        Re: New Thinking On Evaporation May Affect Climate Models jimp@specsol.spam.sux.com - 2015-10-29 02:03 +0000

#527675 — New Thinking On Evaporation May Affect Climate Models

New Thinking On Evaporation May Affect Climate Models
> http://www.reportingclimatescience.com/news-stories/article/new-thinking-on-evaporation-may-affect-climate-models.html


>
>
> Abstract
>
> The precise determination of evaporation flux from liquid surfaces
> gives control over evaporation-driven self-assembly in soft matter
> systems. The Hertz–Knudsen (HK) equation is commonly used to predict
> evaporation flux. This equation states that the flux is proportional
> to the difference between the pressure in the system and the
> equilibrium pressure for liquid/vapor coexistence. We applied
> molecular dynamics (MD) simulations of one component Lennard-Jones
> (LJ) fluid to test the HK equation for a wide range of thermodynamic
> parameters covering more than one order of magnitude in the values of
> flux. The flux determined in the simulations was 3.6 times larger
> than that computed from the HK equation. However, the flux was
> constant over time while the pressures in the HK equation exhibited
> strong fluctuations during simulations. This observation suggests
> that the HK equation may not appropriately grasp the physical
> mechanism of evaporation. We discuss this issue in the context of
> momentum flux during evaporation and mechanical equilibrium in this
> process. Most probably the process of evaporation is driven by a tiny
> difference between the liquid pressure and the gas pressure. This
> difference is equal to the momentum flux i.e. momentum carried by the
> molecules leaving the surface of the liquid during evaporation. The
> average velocity in the evaporation flux is very small (two to three
> orders of magnitude smaller than the typical velocity of LJ atoms).
> Therefore the distribution of velocities of LJ atoms does not deviate
> from the Maxwell–Boltzmann distribution, even in the interfacial
> region.
>
> Citation
>
> A molecular dynamics test of the Hertz–Knudsen equation for
> evaporating liquids by
> Robert Hołyst, Marek Litniewski and Daniel Jakubczyk ublished in Soft
> Matter, DOI: 10.1039/C5SM01508A
>


-- 

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to the discussion of physics, news from the physics
community, and physics-related social issues.

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#527688

On Friday, October 23, 2015 at 9:43:04 AM UTC-7, Sam Wormley wrote:
> New Thinking On Evaporation May Affect Climate Models
> > http://www.reportingclimatescience.com/news-stories/article/new-thinking-on-evaporation-may-affect-climate-models.html
> 
> 
> >
> >
> > Abstract
> >
> > The precise determination of evaporation flux from liquid surfaces
> > gives control over evaporation-driven self-assembly in soft matter
> > systems. The Hertz–Knudsen (HK) equation is commonly used to predict
> > evaporation flux. This equation states that the flux is proportional
> > to the difference between the pressure in the system and the
> > equilibrium pressure for liquid/vapor coexistence. We applied
> > molecular dynamics (MD) simulations of one component Lennard-Jones
> > (LJ) fluid to test the HK equation for a wide range of thermodynamic
> > parameters covering more than one order of magnitude in the values of
> > flux. The flux determined in the simulations was 3.6 times larger
> > than that computed from the HK equation. However, the flux was
> > constant over time while the pressures in the HK equation exhibited
> > strong fluctuations during simulations. This observation suggests
> > that the HK equation may not appropriately grasp the physical
> > mechanism of evaporation. We discuss this issue in the context of
> > momentum flux during evaporation and mechanical equilibrium in this
> > process. Most probably the process of evaporation is driven by a tiny
> > difference between the liquid pressure and the gas pressure. This
> > difference is equal to the momentum flux i.e. momentum carried by the
> > molecules leaving the surface of the liquid during evaporation. The
> > average velocity in the evaporation flux is very small (two to three
> > orders of magnitude smaller than the typical velocity of LJ atoms).
> > Therefore the distribution of velocities of LJ atoms does not deviate
> > from the Maxwell–Boltzmann distribution, even in the interfacial
> > region.
> >
> > Citation
> >
> > A molecular dynamics test of the Hertz–Knudsen equation for
> > evaporating liquids by
> > Robert Hołyst, Marek Litniewski and Daniel Jakubczyk ublished in Soft
> > Matter, DOI: 10.1039/C5SM01508A
> >
> 
> 
> -- 
> 
> sci.physics is an unmoderated newsgroup dedicated
> to the discussion of physics, news from the physics
> community, and physics-related social issues.

Spread 1 square mile of aluminum foil and spray ocean water 3 inches deep in the hot Sun and catch the evaporation with plastic cover. Sun's energy does the work,and you end up with pure water to use. Its a well known plan.It works.  TreBert

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#527704

Sam Wormley <swormley1@gmail.com> wrote:
> New Thinking On Evaporation May Affect Climate Models

And someday maybe in the far future climate models might actually work,
spamming shit head.

Have you ever wondered what your life might have been like if you had
the competence to do more than just copy the words of others, spamming
piece of shit?


-- 
Jim Pennino

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#528834

On 10/23/15 1:20 PM, jimp@specsol.spam.sux.com wrote:
> And someday maybe in the far future climate models might actually work,
> spamming shit head.



   Try not to be so stooopid, jimp.


   Name callers like you, jimp, can greatly benefit from these anger
   management classes. Give them a try--improve your behavior on
   USENET.
 > http://yellowpages.com/rancho-cucamonga-ca/anger-management-classes


   North Pacific Ice Drives Circulation And Climate
> http://www.reportingclimatescience.com/news-stories/article/north-pacific-ice-drives-circulation-and-climate.html

 > Abstract
 >
 > The Bering Strait provides a shallow connection that allows
 > freshwater to flow from the North Pacific into the North Atlantic,
 > but this passage was closed during past glacials when sea level was
 > at least 50 m lower than at present. Climate models investigating
 > Bering Strait closure predict that this mechanism increases the
 > salinity in the North Atlantic and reduces the salinity in the North
 > Pacific, inducing a Pacific-Atlantic seesaw in meridional overturning
 > circulation and poleward heat flux. However, the Pacific circulation
 > response to Bering Strait closure, and thus the seesaw theory, has
 > not been tested by long paleoceanographic records. We present long
 > records of foraminiferal δ18O and δ13C from Integrated Ocean Drilling
 > Program Site U1342 in the Bering Sea, which provide the first
 > evidence of enhanced North Pacific Intermediate Water when the Bering
 > Strait was closed during each of the extreme glacials of the last 1.2
 >  Myr. These results suggest that orbital-scale variations in North
 > Pacific Intermediate Water are coherent and in phase with variations
 > in upper North Atlantic Deep Water but are unrelated to changes in
 > lower North Atlantic Deep Water. Together, these results provide
 > evidence for systematic, orbital-scale variability in North Pacific
 > Ocean circulation and may challenge the idea of an orbital-scale
 > Pacific-Atlantic seesaw.
 >
 > Citation
 >
 > North Pacific Intermediate Water circulation enhanced by the closure
 > of the Bering Strait by Karla P. Knudson and Ana Christina Ravelo,
 > published in Paleoceanography, DOI: 10.1002/2015PA002840
 >


-- 

sci.physics is an unmoderated newsgroup dedicated
to the discussion of physics, news from the physics
community, and physics-related social issues.

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#528851

Sam Wormley <swormley1@gmail.com> wrote:
> On 10/23/15 1:20 PM, jimp@specsol.spam.sux.com wrote:
>> And someday maybe in the far future climate models might actually work,
>> spamming shit head.
> 
> 
> 
>   Try not to be so stooopid, jimp.

Try not to be a spamming shit head.

> 
>   Name callers like you, jimp, can greatly benefit from these anger
>   management classes. Give them a try--improve your behavior on
>   USENET.
>> http://yellowpages.com/rancho-cucamonga-ca/anger-management-classes

Have you ever wondered why you are the only person who thinks I am
angry with them, spamming piece of shit?
 
 
>   North Pacific Ice Drives Circulation And Climate
>> http://www.reportingclimatescience.com/news-stories/article/north-pacific-ice-drives-circulation-and-climate.html
> 
>> Abstract
>>
>> The Bering Strait provides a shallow connection that allows
>> freshwater to flow from the North Pacific into the North Atlantic,
>> but this passage was closed during past glacials when sea level was
>> at least 50 m lower than at present. Climate models investigating
>> Bering Strait closure predict that this mechanism increases the
>> salinity in the North Atlantic and reduces the salinity in the North
>> Pacific, inducing a Pacific-Atlantic seesaw in meridional overturning
>> circulation and poleward heat flux. However, the Pacific circulation
>> response to Bering Strait closure, and thus the seesaw theory, has
>> not been tested by long paleoceanographic records. We present long
>> records of foraminiferal δ18O and δ13C from Integrated Ocean Drilling
>> Program Site U1342 in the Bering Sea, which provide the first
>> evidence of enhanced North Pacific Intermediate Water when the Bering
>> Strait was closed during each of the extreme glacials of the last 1.2
>>  Myr. These results suggest that orbital-scale variations in North
>> Pacific Intermediate Water are coherent and in phase with variations
>> in upper North Atlantic Deep Water but are unrelated to changes in
>> lower North Atlantic Deep Water. Together, these results provide
>> evidence for systematic, orbital-scale variability in North Pacific
>> Ocean circulation and may challenge the idea of an orbital-scale
>> Pacific-Atlantic seesaw.
>>
>> Citation
>>
>> North Pacific Intermediate Water circulation enhanced by the closure
>> of the Bering Strait by Karla P. Knudson and Ana Christina Ravelo,
>> published in Paleoceanography, DOI: 10.1002/2015PA002840

Where is your discussion, or is cut and paste all you can do, spamming
shit head?

Did you get the author's permission to copy this work without any
comment of your own, spamming shit head?

-- 
Jim Pennino

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