THE GOAL OF THIS PROPOSAL IS THE LABORATORY INFRARED SPECTROSCOPY OF MOLECULES OF IMPORTANCE IN THE ATMOSPHERES OF TITAN AND THE GIANT PLANETS AS WELL AS COMETS. IT FOCUSES ON THE SPECTRA OF SMALL HYDROCARBONS AND RELATED MOLECULES; OF PARTICULAR INTEREST ARE THE HYDROCARBONS ETHANE PROPANE PROPENE AND BUTANE. WE WILL DELIVER TO THE ATMOSPHERES NODE OF NASA S PLANETARY DATA SYSTEM (PDS) HIGH RESOLUTION INFRARED ABSORPTION CROSS SECTIONS FOR THESE SPECIES IN THE INFRARED AND NEAR INFRARED FOR AN APPROPRIATE SET OF TEMPERATURES PRESSURES AND COMPOSITIONS TO MATCH TYPICAL PLANETARY ATMOSPHERIC CONDITIONS. PDS HAS AGREED TO ACCEPT AND ARCHIVE OUR DATA. WE WILL MEASURE THE ABSORPTION SPECTRA OF COLD HYDROCARBON GASES BROADENED BY HYDROGEN NITROGEN AND HELIUM WITH A HIGH-RESOLUTION FOURIER TRANSFORM SPECTROMETER. MANY OF THESE SPECTRA WILL BE RECORDED AT SYNCHROTRON FACILITIES IN AUSTRALIA AND CANADA AS WELL AS AT OLD DOMINION UNIVERSITY. THESE SPECTRA WILL BE CONVERTED INTO SETS OF ABSORPTION CROSS SECTIONS AND FOR SOME SPECIES A LINE-BY-LINE ANALYSIS WILL BE CARRIED OUT. THESE DATA ARE NEEDED FOR RELIABLE RETRIEVALS OF TRACE GAS CONCENTRATIONS AND PHYSICAL PROPERTIES. THE PROPOSAL CONTRIBUTES TO THE PLANETARY DATA ARCHIVING RESTORATION AND TOOLS (PDART) PROGRAM BY: 1.5 GENERATION OF NEW REFERENCE INFORMATION . INCLUDED IN THIS CATEGORY ARE: PROPOSALS TO MAKE LABORATORY MEASUREMENTS CONDUCT EXPERIMENTS OR OTHERWISE GENERATE NEW REFERENCE INFORMATION THAT IS INTENDED FOR GENERAL USE IN PLANETARY SCIENCE WILL BE CONSIDERED. EXAMPLES MAY INCLUDE BUT ARE BY NO MEANS LIMITED TO SPECTRAL DATA OUR LABORATORY SPECTRAL DATA ARE NEEDED FOR EXAMPLE TO SUPPORT JUNO AND CASSINI OBSERVATIONS OF TITAN SATURN AND JUPITER AS WELL AS MEASUREMENTS MADE WITH GROUND-BASED AND SPACE-BASED TELESCOPES OF THE OUTER PLANETS AND THEIR SATELLITES.