HR: 0800h
AN: P51A-0203    [Abstracts]
TI: Jupiter Stratospheric Jet Simulations
AU: * Morales-Juberias, R
EM: rmjuberias@gmail.com
AF: New Mexico Tech Geophysical Research Center, 801 Leroy Place, Socorro, NM 87801, United States
AU: Liang, M
EM: mcl@gps.caltech.edu
AF: Research Center for Environmental Changes, Academia Sinica, 128 Sec. 2, Academia Rd., Nankang, Taipei, 115, Taiwan
AU: Dowling, T E
EM: dowling@louisville.edu
AF: University of Louisville Comparative Planetology Laboratory, 211 Sackett Hall, Louisville, KY 40292, United States
AB: High resolution temperature maps of Jupiter's stratosphere, derived from observations made in late 2000 and early 2001 with the Composite Infrared Spectrometer (CIRS) onboard the Cassini spacecraft, revealed the existence of a 140 m/s zonal jet that is centered near 4 mbar. The existence of such an intense high-altitude jet was not previously known and its nature remains unclear. In order to explore the interplay that radiative and mechanical forcing mechanisms have on the onset of a jet like the one observed by Cassini, we use the EPIC general circulation model to perform spin-up experiments of Jupiter's stratosphere under the effect of different radiative and mechanical forcing terms. In our experiments we use radiative heating and cooling rates derived from measurements of temperature profiles, composition and aerosol distributions obtained from observations made with Galileo and Cassini. Different wave perturbations are used as mechanical forcing terms. We present the results of these experiments and analyze the effects that the different forcing terms have in the development of a jet like the one observed.
DE: 5200 PLANETARY SCIENCES: ASTROBIOLOGY
DE: 5400 PLANETARY SCIENCES: SOLID SURFACE PLANETS
DE: 5700 PLANETARY SCIENCES: FLUID PLANETS
DE: 6000 PLANETARY SCIENCES: COMETS AND SMALL BODIES
DE: 6200 PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS
SC: Planetary Sciences [P]
MN: 2007 Fall Meeting