Cassini Interdisciplinary Investigation:

Titan Aeronomy (IDS)

IDS: Dr. Daniel Gautier

Interdisciplinary Scientist:

General Description of Interdisciplinary Investigation:

This Huygens Project interdisciplinary scientific investigation is concerned with the study of Titan atmospheric aerosols, photochemistry, general circulation, and origins. The investigation will make use of the Cassini/Huygens science data base to determine the detailed nature of interactions within the upper atmosphere of Titan.

Scientific Objectives of Interdisciplinary Investigation:

• Determine the temperature structure within Titan's atmosphere.
• Determine the horizontal and vertical distribution of minor Titan atmospheric components (especially organic molecules).
• Determine the horizontal and vertical distribution of Titan aerosols and clouds.
• Determine noble gas abundances and isotopic ratios with the Titan atmosphere, especially the ratio of deuterium to hydrogen.
• Construct a three-dimensional model of Titan atmospheric circulation.

For additional information on the Space Research Department of the Paris Observatory, see http://despa.obspm.fr/ (Paris Observatory DESPA homepage).