Pluto: atmosphere

pluto atmosphere source planet originIs Pluto's atmosphere due to sublimation of ice water on or just beneath its surface or due to electrochemical process?

pluto atmosphere orbit dwarf planet origin sourceScience suggests that if Pluto has an atmosphere then its source must be only from the planet itself.

Pluto's atmosphere due to its orbit

Is Pluto's puzzling atmosphere due to its very strange orbit? It's difference to the other dwarf planets and asteroids in its region due to its special Electric Potential Difference?

Pluto's orbit means its electrical properties are relatively different to the electrical nature of our solar system's and Sun's plasma around it. This leading to its coma like atmosphere or plasmaphere. Similar to comets (active asteroids) and perhaps other planet?

Will Pluto's atmosphere or its surface be relatively much warmer than expected and predicted? Due to electromagnetic/electrochemical/electrical processes?

If Pluto's atmosphere keeps getting thicker or does not get thinner as it gets further away from the sun will this be evidence that its atmosphere is part of an Electric Universe? Will Pluto's atmosphere change but in an unexpected away, different chemicals that can not be explained or not expected according to sublimation and the atmosphere getting colder?

Will Pluto's atmosphere stuff for its whole journey around the sun?

Due to its surprising atmosphere and orbit is Pluto a very large active asteroid or you could also call Pluto a comet?

Pluto atmosphere predictions and figures

Below are quotes about Pluto before we have visited the planet.

Observations of the 1.4- to 2.4-micrometer spectrum of Pluto reveal absorptions of carbon monoxide and nitrogen ices and confirm the presence of solid methane. Frozen nitrogen is more abundant than the other two ices by a factor of about 50; gaseous nitrogen must therefore be the major atmospheric constituent. The absence of carbon dioxide absorptions is one of several differences between the spectra of Pluto and Triton in this region. Both worlds carry information about the composition of the solar nebula and the processes by which icy planetesimals formed.
Surface ices and the atmospheric composition of Pluto

It’s important to understand that the orbit of Pluto is very elliptical, bringing it closer and then more distant at various points of its orbit. At the closest point, the surface of solid nitrogen heats up enough that it sublimates – changes directly from a solid to a gas.

These clouds of nitrogen surround Pluto, but it doesn’t have enough gravity to keep them together, so they can escape out into space.

And then, as Pluto gets further from the Sun again, it cools down, and the atmosphere freezes and solidifies back down on the surface of Pluto.
Pluto Atmosphere

It currently has bar on the surface and its height extends 60 km above the surface.

More precise observations were done in 2002, when astronomers were surprised to find that Pluto’s atmosphere had actually thickened since it had first been discovered. Astronomers think this is a seasonal phenomenon. The nitrogen on Pluto’s surface was exposed to sunlight following a 120-year winter. The nitrogen became a gas, but it took time to get going as an atmosphere.

As Pluto is now traveling away from the Sun, the Pluto atmosphere won’t last long. Astronomers think it will begin to disappear by 2015. This is one of the big reasons NASA sent its New Horizons spacecraft – to study Pluto’s atmosphere before it’s gone for good.
Pluto Atmosphere

the atmosphere is not collapsing right now. In fact, it's still getting thicker, even as Pluto is moving farther from the Sun. Plugging these data points back into their climate models, Olkin and Young and their coauthors conclude that the only model that can explain the observed behavior of the atmosphere is one in which there is a permanent north polar cap. And in those models, the atmosphere never completely collapses. It waxes and it wanes, but it never collapses.
Pluto's atmosphere does not collapse

The ices on the surface of Pluto derive nitrogen, methane and carbon monoxide gasses. This make up the very thin envelope that is Pluto’s atmosphere. The pressure of the surface of Pluto ranges from 6.5-24 ubar. It has been speculated that because of Pluto’s elongated orbit that it has an effect on its atmosphere. The atmosphere slowly freezes out and falls to the ground when Pluto moves away from the Sun. The temperature of the solid surface of Pluto increases when Pluto is nearer the Sun. The Ices sublimate into gas because of this. An anti-greenhouse effect occurs where the surface of Pluto is cooled because of this sublimation. By using the Submillimeter Array, scientists discovered that the temperature in Pluto is around 43 K (−230 °C).

On 2006 it was discovered that there was ethane on Pluto’s surface. The ethane was created by the photolysis of frozen methane. The gas is then emitted into the atmosphere.

Because methane exists temperature inversion is common in Pluto’s atmosphere. The atmosphere is 36K warmer than 10km below.
The Atmosphere of Pluto