Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p12a..03z&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #P12A-03
Physics
[0360] Atmospheric Composition And Structure / Radiation: Transmission And Scattering, [3359] Atmospheric Processes / Radiative Processes, [5704] Planetary Sciences: Fluid Planets / Atmospheres, [6220] Planetary Sciences: Solar System Objects / Jupiter
Scientific paper
Thermal infrared emission from Jovian atmosphere itself is absorbed and re-emitted and causes the atmospheric cooling to space. Above about 1 mbar, Non-Local Thermodynamic Equilibrium (Non-LTE) effect may be important for the IR cooling rate and therefore the atmospheric heat balance. In this study, a Non-LTE radiative transfer model is introduced to calculate the cooling rate via the IR bands of the hydrocarbon species including CH4 at 7.7 μm, C2H6 at 12.2 μm, and C2H2 at 14 μm. Collisional de-activation (quenching) rates of the excited states of these hydrocarbon species in a hydrogen-rich atmosphere are the major unknown parameters in the current literature. However, our results show that, the radiative budget of the upper stratosphere of Jupiter depends crucially on the quenching rates. The effect on the stratospheric circulation and hydrocarbon distribution is discussed.
Shia R.
West Robert A.
Yelle Roger V.
Yung Yuk L.
Zhang Xinyu
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