Atmospher3 - Atmosphere Combined color and near-infrared...

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Atmosphere Combined color and near- infrared image of Neptune, showing bands of methane in its atmosphere , and four of its moons , Proteus , Larissa , Galatea , and Despina . At high altitudes, Neptune's atmosphere is 80% hydrogen and 19% helium . [17] A trace amount of methane is also present. Prominent absorption bands of methane occur at wavelengths above 600 nm, in the red and infrared portion of the spectrum. As with Uranus, this absorption of red light by the atmospheric methane is part of what gives Neptune its blue hue, [49] although Neptune's vivid azure differs from Uranus's milder cyan . Since Neptune's atmospheric methane content is similar to that of Uranus, some unknown atmospheric constituent is thought to contribute to Neptune's colour. [15] Neptune's atmosphere is sub-divided into two main regions; the lower troposphere , where temperature decreases with altitude, and the stratosphere , where temperature increases with altitude. The boundary between the two, the tropopause
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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Atmospher3 - Atmosphere Combined color and near-infrared...

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