Meridional Transport in the Stratosphere of Jupiter | Zendy

MaoChang Liang | Zendy; RunLie Shia | Zendy; Anthony Y.-T. Lee | Zendy; M. Allen | Zendy; A. J. Friedson | Zendy; Yuk L. Yung | Zendy

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Meridional Transport in the Stratosphere of Jupiter

Author(s) -

MaoChang Liang,

RunLie Shia,

Anthony Y.-T. Lee,

M. Allen,

A. J. Friedson,

Yuk L. Yung

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/499624

Subject(s) - stratosphere , zonal and meridional , latitude , atmospheric sciences , jupiter (rocket family) , comet , altitude (triangle) , meridional flow , mixing ratio , atmosphere of jupiter , troposphere , physics , environmental science , astrophysics , jovian , planet , astronomy , geometry , mathematics , space shuttle , saturn

The Cassini measurements of C$_2$H$_2$ and C$_2$H$_6$ at $\sim$5 mbar providea constraint on meridional transport in the stratosphere of Jupiter. Weperformed a two-dimensional photochemical calculation coupled with masstransport due to vertical and meridional mixing. The modeled profile ofC$_2$H$_2$ at latitudes less than 70$^\circ$ follows the latitude dependence ofthe solar insolation, while that of C$_2$H$_6$ shows little latitudedependence, consistent with the measurements. In general, our model studysuggests that the meridional transport timescale above 5-10 mbar altitude levelis $\gtrsim$1000 years and the time could be as short as 10 years below 10 mbarlevel, in order to fit the Cassini measurements. The derived meridionaltransport timescale above the 5 mbar level is a hundred times longer than thatobtained from the spreading of gas-phase molecules deposited after the impactof Shoemaker-Levy 9 comet. There is no explanation at this time for thisdiscrepancy.Comment: 11 pages, 3 figures, 1 table. ApJL in pres

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