Cassini CIRS retrievals of ammonia in Jupiter's upper troposphere

Details Cassini CIRS retrievals of ammonia in Jupiter's upper troposphere Cassini CIRS retrievals of ammonia in Jupiter's upper troposphere

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006icar..182..169a&link_type=abstract

Icarus, Volume 182, Issue 1, p. 169-180.

Computer Science

14

Scientific paper

The zonal mean ammonia abundance on Jupiter between the 400- and 500-mbar pressure levels is inferred as a function of latitude from Cassini Composite Infrared Spectrometer data. Near the Great Red Spot, the ammonia abundance is mapped as a function of latitude and longitude. The Equatorial Zone is rich in ammonia, with a relative humidity near unity. The North and South Equatorial Belts are depleted relative to the Equatorial Zone by an order of magnitude. The Great Red Spot shows a local maximum in the ammonia abundance. Ammonia abundance is highly correlated with temperature perturbations at the same altitude. Under the assumption that anomalies in ammonia and temperature are both perturbed from equilibrium by vertical motion, we find that the adjustment time constant for ammonia equilibration is about one third of the radiative time constant.

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